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GPIB Issue with 3458A

TM
Todd Micallef
Sat, Dec 30, 2017 11:55 PM

Randy,

I will continue to look for my adapter. I haven't used it for quite a while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the connector
to the other (on the same end of the cable) and caused me lots of wasted
time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see if
anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first before I
moved on to Python and I have only written a couple for the different
meters I have on hand. Version 1.01 is the most current version I have

for

the 3458A.
I see that I should have added at least one more command to the meter
initialization.  The additional init command is used in the scripts on
xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this. When

I

find it, I will also test it. I want to make sure there are no further
issues.
Also, do both meters run the same firmware versions? I wonder if the HP
meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <randyevans2688@gmail.com

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

Is there a version number at the top of the file? I had two versions

(1.00

and 1.01). I can't remember all that changed between the two since

it

has

been a while but I did find an additional timeout code that limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for you, I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (https://xdevs.com/article/dmm

_noise/

).

It
works fine with my Agilent 3458A and with a friend's HP-3458A and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run (that is
different from the Xdev program)?  It would be nice to see if I

could

get

something to work other than the HP3458.EXE program.  Or if any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist with a

strange

problem i am having trying to make automated measurements using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me by

Martin

Reynolds, which is a variant on the Xdevs noise measurement

program.

Martin's program continuously reads the voltage measurements

sequentially

from the two meters and then stores then in a measurements file,

along

with

the temperature measurements from both meters.  The program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP unit

will

not

make any voltage measurements although I can see both the 3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will start

to

take

voltage and temperature measurements and send them to the PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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Randy, I will continue to look for my adapter. I haven't used it for quite a while. I have seen similar issues and swapped cables, moved the adapter to the other meter, etc... One of my cables was bad from one side of the connector to the other (on the same end of the cable) and caused me lots of wasted time. Weird reading errors were happening. Would you email me Martin's code so I can test it here and I will see if anything can be done to replicate your issue. Todd On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com> wrote: > Todd, > > I tried adding the line but it made no difference. > > Randy > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <randyevans2688@gmail.com> > wrote: > > > Todd, > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > procedure Init_Device; > > begin; > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get ID of > meter > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > EZGPIB_ScreenWriteLn(meter_id); > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold trigger > > until meter can be setup > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > end; > > > > > > Randy > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com> > > wrote: > > > >> Randy, > >> > >> I am the person that wrote that EzGPIB script. It was my first before I > >> moved on to Python and I have only written a couple for the different > >> meters I have on hand. Version 1.01 is the most current version I have > for > >> the 3458A. > >> I see that I should have added at least one more command to the meter > >> initialization. The additional init command is used in the scripts on > >> xDevs. > >> > >> Add the following line in the Init_Device procedure > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > >> > >> This tells the meter to send an EOI on every read. > >> > >> I am looking for one of my Prologix adapters or I would test this. When > I > >> find it, I will also test it. I want to make sure there are no further > >> issues. > >> Also, do both meters run the same firmware versions? I wonder if the HP > >> meter is using a much older version. > >> > >> Todd > >> > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <randyevans2688@gmail.com > > > >> wrote: > >> > >> > Todd, > >> > > >> > I have version 1.01. Yes, please e-mail me your modified version. > >> Maybe it > >> > will help. > >> > > >> > Thanks, > >> > > >> > Randy > >> > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <tmicallef@gmail.com> > >> > wrote: > >> > > >> > > Randy, > >> > > > >> > > Is there a version number at the top of the file? I had two versions > >> > (1.00 > >> > > and 1.01). I can't remember all that changed between the two since > it > >> has > >> > > been a while but I did find an additional timeout code that limited > >> the > >> > > wait time for reading data to 1 minute. I am guessing I had a > problem > >> > with > >> > > mine and added it. > >> > > > >> > > I can email it to you if you want to try it. If it works for you, I > >> will > >> > > have Illya update it on xDevs. > >> > > > >> > > Todd > >> > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > >> randyevans2688@gmail.com> > >> > > wrote: > >> > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > program > >> > > > "HP3458A_Measure_DMM_Noise.488" (https://xdevs.com/article/dmm > >> _noise/ > >> > ). > >> > > > It > >> > > > works fine with my Agilent 3458A and with a friend's HP-3458A and > >> his > >> > > > Agilent 3458A using the EZGPIB program. The SW versions are > >> identical > >> > > with > >> > > > my friend's DMMs, the HP units are (8.2) and with the Agilent > units > >> are > >> > > > (9.2). However, both of my units work fine with the KE5FX GPIB > >> Toolkit > >> > > > HP3458.EXE program to download the NVRAM CAL data. This would > seem > >> to > >> > > > indicate that my HP-3458 GPIB works at least partially. > >> > > > > >> > > > Does anyone have a EZGPIB program that I could try to run (that is > >> > > > different from the Xdev program)? It would be nice to see if I > >> could > >> > get > >> > > > something to work other than the HP3458.EXE program. Or if any > one > >> has > >> > > > some ideas on what to look for. > >> > > > > >> > > > Thanks, > >> > > > > >> > > > Randy Evans > >> > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > >> randyevans2688@gmail.com > >> > > > >> > > > wrote: > >> > > > > >> > > > > I am hoping some of you experts might be able to assist with a > >> > strange > >> > > > > problem i am having trying to make automated measurements using > >> > EZGPIB > >> > > > with > >> > > > > an Agilent and an HP 3458A. I have a program given to me by > >> Martin > >> > > > > Reynolds, which is a variant on the Xdevs noise measurement > >> program. > >> > > > > Martin's program continuously reads the voltage measurements > >> > > sequentially > >> > > > > from the two meters and then stores then in a measurements file, > >> > along > >> > > > with > >> > > > > the temperature measurements from both meters. The program > works > >> > fine > >> > > on > >> > > > > his Agilent and HP 3458As. > >> > > > > > >> > > > > On my two 3458As, it takes the temperature measurements just > fine > >> but > >> > > > only > >> > > > > takes a voltage measurement from the Agilent unit. The HP unit > >> will > >> > > not > >> > > > > make any voltage measurements although I can see both the 3458As > >> in > >> > > talk > >> > > > > states and, of course, it does sent the temperature > measurements. > >> > > > However, > >> > > > > if I turn the HP unit off and then on again, the HP will start > to > >> > take > >> > > > > voltage and temperature measurements and send them to the PC. > >> > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > >> > > > > > >> > > > > Thanks, > >> > > > > > >> > > > > Randy Evans > >> > > > > > >> > > > _______________________________________________ > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > mailman/listinfo/volt-nuts > >> > > > and follow the instructions there. > >> > > > > >> > > _______________________________________________ > >> > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > mailman/listinfo/volt-nuts > >> > > and follow the instructions there. > >> > > > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@febo.com > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > mailman/listinfo/volt-nuts > >> > and follow the instructions there. > >> > > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > >> ailman/listinfo/volt-nuts > >> and follow the instructions there. > >> > > > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
RE
Randy Evans
Sun, Dec 31, 2017 12:15 AM

Todd,

I have swapped cables, moved the Prologix adapter to both meters (Agilent
works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the connector
to the other (on the same end of the cable) and caused me lots of wasted
time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see if
anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first before

I

moved on to Python and I have only written a couple for the different
meters I have on hand. Version 1.01 is the most current version I have

for

the 3458A.
I see that I should have added at least one more command to the meter
initialization.  The additional init command is used in the scripts on
xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this.

When

I

find it, I will also test it. I want to make sure there are no further
issues.
Also, do both meters run the same firmware versions? I wonder if the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <tmicallef@gmail.com

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (https://xdevs.com/article/dmm

_noise/

).

It
works fine with my Agilent 3458A and with a friend's HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run (that

is

different from the Xdev program)?  It would be nice to see if I

could

get

something to work other than the HP3458.EXE program.  Or if any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist with a

strange

problem i am having trying to make automated measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me by

Martin

Reynolds, which is a variant on the Xdevs noise measurement

program.

Martin's program continuously reads the voltage measurements

sequentially

from the two meters and then stores then in a measurements

file,

along

with

the temperature measurements from both meters.  The program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP

unit

will

not

make any voltage measurements although I can see both the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will start

to

take

voltage and temperature measurements and send them to the PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/volt-nuts
and follow the instructions there.


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/volt-nuts
and follow the instructions there.


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/volt-nuts
and follow the instructions there.


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/volt-nuts
and follow the instructions there.


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To unsubscribe, go to https://www.febo.com/cgi-bin/
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and follow the instructions there.


volt-nuts mailing list -- volt-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/volt-nuts
and follow the instructions there.

Todd, I have swapped cables, moved the Prologix adapter to both meters (Agilent works, HP doesn't), tried Martins code as well as Xdevs's. I have not tried another PC yet, maybe the next step. Here is the code that Martin modified for two meters, as well as the modified Xdev's code per your directions (V1.02). Thanks, Randy On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> wrote: > Randy, > > I will continue to look for my adapter. I haven't used it for quite a > while. > > I have seen similar issues and swapped cables, moved the adapter to the > other meter, etc... One of my cables was bad from one side of the connector > to the other (on the same end of the cable) and caused me lots of wasted > time. Weird reading errors were happening. > > Would you email me Martin's code so I can test it here and I will see if > anything can be done to replicate your issue. > > Todd > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com> > wrote: > > > Todd, > > > > I tried adding the line but it made no difference. > > > > Randy > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <randyevans2688@gmail.com> > > wrote: > > > > > Todd, > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > procedure Init_Device; > > > begin; > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get ID of > > meter > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold > trigger > > > until meter can be setup > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > end; > > > > > > > > > Randy > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com> > > > wrote: > > > > > >> Randy, > > >> > > >> I am the person that wrote that EzGPIB script. It was my first before > I > > >> moved on to Python and I have only written a couple for the different > > >> meters I have on hand. Version 1.01 is the most current version I have > > for > > >> the 3458A. > > >> I see that I should have added at least one more command to the meter > > >> initialization. The additional init command is used in the scripts on > > >> xDevs. > > >> > > >> Add the following line in the Init_Device procedure > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > >> > > >> This tells the meter to send an EOI on every read. > > >> > > >> I am looking for one of my Prologix adapters or I would test this. > When > > I > > >> find it, I will also test it. I want to make sure there are no further > > >> issues. > > >> Also, do both meters run the same firmware versions? I wonder if the > HP > > >> meter is using a much older version. > > >> > > >> Todd > > >> > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > randyevans2688@gmail.com > > > > > >> wrote: > > >> > > >> > Todd, > > >> > > > >> > I have version 1.01. Yes, please e-mail me your modified version. > > >> Maybe it > > >> > will help. > > >> > > > >> > Thanks, > > >> > > > >> > Randy > > >> > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <tmicallef@gmail.com > > > > >> > wrote: > > >> > > > >> > > Randy, > > >> > > > > >> > > Is there a version number at the top of the file? I had two > versions > > >> > (1.00 > > >> > > and 1.01). I can't remember all that changed between the two since > > it > > >> has > > >> > > been a while but I did find an additional timeout code that > limited > > >> the > > >> > > wait time for reading data to 1 minute. I am guessing I had a > > problem > > >> > with > > >> > > mine and added it. > > >> > > > > >> > > I can email it to you if you want to try it. If it works for you, > I > > >> will > > >> > > have Illya update it on xDevs. > > >> > > > > >> > > Todd > > >> > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > >> randyevans2688@gmail.com> > > >> > > wrote: > > >> > > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > > program > > >> > > > "HP3458A_Measure_DMM_Noise.488" (https://xdevs.com/article/dmm > > >> _noise/ > > >> > ). > > >> > > > It > > >> > > > works fine with my Agilent 3458A and with a friend's HP-3458A > and > > >> his > > >> > > > Agilent 3458A using the EZGPIB program. The SW versions are > > >> identical > > >> > > with > > >> > > > my friend's DMMs, the HP units are (8.2) and with the Agilent > > units > > >> are > > >> > > > (9.2). However, both of my units work fine with the KE5FX GPIB > > >> Toolkit > > >> > > > HP3458.EXE program to download the NVRAM CAL data. This would > > seem > > >> to > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > >> > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run (that > is > > >> > > > different from the Xdev program)? It would be nice to see if I > > >> could > > >> > get > > >> > > > something to work other than the HP3458.EXE program. Or if any > > one > > >> has > > >> > > > some ideas on what to look for. > > >> > > > > > >> > > > Thanks, > > >> > > > > > >> > > > Randy Evans > > >> > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > >> randyevans2688@gmail.com > > >> > > > > >> > > > wrote: > > >> > > > > > >> > > > > I am hoping some of you experts might be able to assist with a > > >> > strange > > >> > > > > problem i am having trying to make automated measurements > using > > >> > EZGPIB > > >> > > > with > > >> > > > > an Agilent and an HP 3458A. I have a program given to me by > > >> Martin > > >> > > > > Reynolds, which is a variant on the Xdevs noise measurement > > >> program. > > >> > > > > Martin's program continuously reads the voltage measurements > > >> > > sequentially > > >> > > > > from the two meters and then stores then in a measurements > file, > > >> > along > > >> > > > with > > >> > > > > the temperature measurements from both meters. The program > > works > > >> > fine > > >> > > on > > >> > > > > his Agilent and HP 3458As. > > >> > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements just > > fine > > >> but > > >> > > > only > > >> > > > > takes a voltage measurement from the Agilent unit. The HP > unit > > >> will > > >> > > not > > >> > > > > make any voltage measurements although I can see both the > 3458As > > >> in > > >> > > talk > > >> > > > > states and, of course, it does sent the temperature > > measurements. > > >> > > > However, > > >> > > > > if I turn the HP unit off and then on again, the HP will start > > to > > >> > take > > >> > > > > voltage and temperature measurements and send them to the PC. > > >> > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > >> > > > > > > >> > > > > Thanks, > > >> > > > > > > >> > > > > Randy Evans > > >> > > > > > > >> > > > _______________________________________________ > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > mailman/listinfo/volt-nuts > > >> > > > and follow the instructions there. > > >> > > > > > >> > > _______________________________________________ > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > mailman/listinfo/volt-nuts > > >> > > and follow the instructions there. > > >> > > > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > mailman/listinfo/volt-nuts > > >> > and follow the instructions there. > > >> > > > >> _______________________________________________ > > >> volt-nuts mailing list -- volt-nuts@febo.com > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > >> ailman/listinfo/volt-nuts > > >> and follow the instructions there. > > >> > > > > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
TM
Todd Micallef
Sun, Dec 31, 2017 2:13 AM

Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters (Agilent
works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of wasted
time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see if
anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current version I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder if the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to see if

I

could

get

something to work other than the HP3458.EXE program.  Or if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me by

Martin

Reynolds, which is a variant on the Xdevs noise measurement

program.

Martin's program continuously reads the voltage measurements

sequentially

from the two meters and then stores then in a measurements

file,

along

with

the temperature measurements from both meters.  The program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP

unit

will

not

make any voltage measurements although I can see both the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will

start

to

take

voltage and temperature measurements and send them to the

PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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To unsubscribe, go to https://www.febo.com/cgi-bin/
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To unsubscribe, go to https://www.febo.com/cgi-bin/
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and follow the instructions there.

Randy, I found the Prologix adapters and have modified the code in the original script. I am doing a test run now and will post the script when I am certain I didn't make it worse. Todd On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> wrote: > Todd, > > I have swapped cables, moved the Prologix adapter to both meters (Agilent > works, HP doesn't), tried Martins code as well as Xdevs's. I have not > tried another PC yet, maybe the next step. > > Here is the code that Martin modified for two meters, as well as the > modified Xdev's code per your directions (V1.02). > > Thanks, > > Randy > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > > > Randy, > > > > I will continue to look for my adapter. I haven't used it for quite a > > while. > > > > I have seen similar issues and swapped cables, moved the adapter to the > > other meter, etc... One of my cables was bad from one side of the > connector > > to the other (on the same end of the cable) and caused me lots of wasted > > time. Weird reading errors were happening. > > > > Would you email me Martin's code so I can test it here and I will see if > > anything can be done to replicate your issue. > > > > Todd > > > > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com> > > wrote: > > > > > Todd, > > > > > > I tried adding the line but it made no difference. > > > > > > Randy > > > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > randyevans2688@gmail.com> > > > wrote: > > > > > > > Todd, > > > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > > > > procedure Init_Device; > > > > begin; > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get ID of > > > meter > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold > > trigger > > > > until meter can be setup > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > > end; > > > > > > > > > > > > Randy > > > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com > > > > > > wrote: > > > > > > > >> Randy, > > > >> > > > >> I am the person that wrote that EzGPIB script. It was my first > before > > I > > > >> moved on to Python and I have only written a couple for the > different > > > >> meters I have on hand. Version 1.01 is the most current version I > have > > > for > > > >> the 3458A. > > > >> I see that I should have added at least one more command to the > meter > > > >> initialization. The additional init command is used in the scripts > on > > > >> xDevs. > > > >> > > > >> Add the following line in the Init_Device procedure > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > > >> > > > >> This tells the meter to send an EOI on every read. > > > >> > > > >> I am looking for one of my Prologix adapters or I would test this. > > When > > > I > > > >> find it, I will also test it. I want to make sure there are no > further > > > >> issues. > > > >> Also, do both meters run the same firmware versions? I wonder if the > > HP > > > >> meter is using a much older version. > > > >> > > > >> Todd > > > >> > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > randyevans2688@gmail.com > > > > > > > >> wrote: > > > >> > > > >> > Todd, > > > >> > > > > >> > I have version 1.01. Yes, please e-mail me your modified version. > > > >> Maybe it > > > >> > will help. > > > >> > > > > >> > Thanks, > > > >> > > > > >> > Randy > > > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > tmicallef@gmail.com > > > > > > >> > wrote: > > > >> > > > > >> > > Randy, > > > >> > > > > > >> > > Is there a version number at the top of the file? I had two > > versions > > > >> > (1.00 > > > >> > > and 1.01). I can't remember all that changed between the two > since > > > it > > > >> has > > > >> > > been a while but I did find an additional timeout code that > > limited > > > >> the > > > >> > > wait time for reading data to 1 minute. I am guessing I had a > > > problem > > > >> > with > > > >> > > mine and added it. > > > >> > > > > > >> > > I can email it to you if you want to try it. If it works for > you, > > I > > > >> will > > > >> > > have Illya update it on xDevs. > > > >> > > > > > >> > > Todd > > > >> > > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > > >> randyevans2688@gmail.com> > > > >> > > wrote: > > > >> > > > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > > > program > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > https://xdevs.com/article/dmm > > > >> _noise/ > > > >> > ). > > > >> > > > It > > > >> > > > works fine with my Agilent 3458A and with a friend's HP-3458A > > and > > > >> his > > > >> > > > Agilent 3458A using the EZGPIB program. The SW versions are > > > >> identical > > > >> > > with > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the Agilent > > > units > > > >> are > > > >> > > > (9.2). However, both of my units work fine with the KE5FX > GPIB > > > >> Toolkit > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. This would > > > seem > > > >> to > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > > >> > > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run > (that > > is > > > >> > > > different from the Xdev program)? It would be nice to see if > I > > > >> could > > > >> > get > > > >> > > > something to work other than the HP3458.EXE program. Or if > any > > > one > > > >> has > > > >> > > > some ideas on what to look for. > > > >> > > > > > > >> > > > Thanks, > > > >> > > > > > > >> > > > Randy Evans > > > >> > > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > > >> randyevans2688@gmail.com > > > >> > > > > > >> > > > wrote: > > > >> > > > > > > >> > > > > I am hoping some of you experts might be able to assist > with a > > > >> > strange > > > >> > > > > problem i am having trying to make automated measurements > > using > > > >> > EZGPIB > > > >> > > > with > > > >> > > > > an Agilent and an HP 3458A. I have a program given to me by > > > >> Martin > > > >> > > > > Reynolds, which is a variant on the Xdevs noise measurement > > > >> program. > > > >> > > > > Martin's program continuously reads the voltage measurements > > > >> > > sequentially > > > >> > > > > from the two meters and then stores then in a measurements > > file, > > > >> > along > > > >> > > > with > > > >> > > > > the temperature measurements from both meters. The program > > > works > > > >> > fine > > > >> > > on > > > >> > > > > his Agilent and HP 3458As. > > > >> > > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements just > > > fine > > > >> but > > > >> > > > only > > > >> > > > > takes a voltage measurement from the Agilent unit. The HP > > unit > > > >> will > > > >> > > not > > > >> > > > > make any voltage measurements although I can see both the > > 3458As > > > >> in > > > >> > > talk > > > >> > > > > states and, of course, it does sent the temperature > > > measurements. > > > >> > > > However, > > > >> > > > > if I turn the HP unit off and then on again, the HP will > start > > > to > > > >> > take > > > >> > > > > voltage and temperature measurements and send them to the > PC. > > > >> > > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > > >> > > > > > > > >> > > > > Thanks, > > > >> > > > > > > > >> > > > > Randy Evans > > > >> > > > > > > > >> > > > _______________________________________________ > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > > > mailman/listinfo/volt-nuts > > > >> > > > and follow the instructions there. > > > >> > > > > > > >> > > _______________________________________________ > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > > mailman/listinfo/volt-nuts > > > >> > > and follow the instructions there. > > > >> > > > > > >> > _______________________________________________ > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > mailman/listinfo/volt-nuts > > > >> > and follow the instructions there. > > > >> > > > > >> _______________________________________________ > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > >> ailman/listinfo/volt-nuts > > > >> and follow the instructions there. > > > >> > > > > > > > > > > > _______________________________________________ > > > volt-nuts mailing list -- volt-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
R
randyevans2688
Sun, Dec 31, 2017 2:26 AM

Todd, thanks for the help.  Where will you post the new code? 
BTW, do you have any very simple code that is likely to work.  I am interested in seeing if anything other than KE5FX's memory dump program will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef tmicallef@gmail.com Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue with 3458A
Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters (Agilent
works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of wasted
time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see if
anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
    EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID of

meter

    if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then
EZGPIB_ScreenWriteLn(meter_id);

    EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
    EZGPIB_BusWriteData(gpib_address,'INBUF ON');
    EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
    EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current version I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the scripts

on

xDevs.

Add the following line in the Init_Device procedure
    EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder if the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to see if

I

could

get

something to work other than the HP3458.EXE program.  Or if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me by

Martin

Reynolds, which is a variant on the Xdevs noise measurement

program.

Martin's program continuously reads the voltage measurements

sequentially

from the two meters and then stores then in a measurements

file,

along

with

the temperature measurements from both meters.  The program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP

unit

will

not

make any voltage measurements although I can see both the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will

start

to

take

voltage and temperature measurements and send them to the

PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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Todd, thanks for the help.  Where will you post the new code?  BTW, do you have any very simple code that is likely to work.  I am interested in seeing if anything other than KE5FX's memory dump program will work on my HP3458A. Thanks again, Randy Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Todd Micallef <tmicallef@gmail.com> Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise voltage measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue with 3458A Randy, I found the Prologix adapters and have modified the code in the original script. I am doing a test run now and will post the script when I am certain I didn't make it worse. Todd On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> wrote: > Todd, > > I have swapped cables, moved the Prologix adapter to both meters (Agilent > works, HP doesn't), tried Martins code as well as Xdevs's.  I have not > tried another PC yet, maybe the next step. > > Here is the code that Martin modified for two meters, as well as the > modified Xdev's code per your directions (V1.02). > > Thanks, > > Randy > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > > > Randy, > > > > I will continue to look for my adapter. I haven't used it for quite a > > while. > > > > I have seen similar issues and swapped cables, moved the adapter to the > > other meter, etc... One of my cables was bad from one side of the > connector > > to the other (on the same end of the cable) and caused me lots of wasted > > time. Weird reading errors were happening. > > > > Would you email me Martin's code so I can test it here and I will see if > > anything can be done to replicate your issue. > > > > Todd > > > > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com> > > wrote: > > > > > Todd, > > > > > > I tried adding the line but it made no difference. > > > > > > Randy > > > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > randyevans2688@gmail.com> > > > wrote: > > > > > > > Todd, > > > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > > > > procedure Init_Device; > > > > begin; > > > >    EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID of > > > meter > > > >    if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > > >    EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold > > trigger > > > > until meter can be setup > > > >    EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > >    EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > >    EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > > end; > > > > > > > > > > > > Randy > > > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <tmicallef@gmail.com > > > > > > wrote: > > > > > > > >> Randy, > > > >> > > > >> I am the person that wrote that EzGPIB script. It was my first > before > > I > > > >> moved on to Python and I have only written a couple for the > different > > > >> meters I have on hand. Version 1.01 is the most current version I > have > > > for > > > >> the 3458A. > > > >> I see that I should have added at least one more command to the > meter > > > >> initialization.  The additional init command is used in the scripts > on > > > >> xDevs. > > > >> > > > >> Add the following line in the Init_Device procedure > > > >>    EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > > >> > > > >> This tells the meter to send an EOI on every read. > > > >> > > > >> I am looking for one of my Prologix adapters or I would test this. > > When > > > I > > > >> find it, I will also test it. I want to make sure there are no > further > > > >> issues. > > > >> Also, do both meters run the same firmware versions? I wonder if the > > HP > > > >> meter is using a much older version. > > > >> > > > >> Todd > > > >> > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > randyevans2688@gmail.com > > > > > > > >> wrote: > > > >> > > > >> > Todd, > > > >> > > > > >> > I have version 1.01. Yes, please e-mail me your modified version. > > > >> Maybe it > > > >> > will help. > > > >> > > > > >> > Thanks, > > > >> > > > > >> > Randy > > > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > tmicallef@gmail.com > > > > > > >> > wrote: > > > >> > > > > >> > > Randy, > > > >> > > > > > >> > > Is there a version number at the top of the file? I had two > > versions > > > >> > (1.00 > > > >> > > and 1.01). I can't remember all that changed between the two > since > > > it > > > >> has > > > >> > > been a while but I did find an additional timeout code that > > limited > > > >> the > > > >> > > wait time for reading data to 1 minute. I am guessing I had a > > > problem > > > >> > with > > > >> > > mine and added it. > > > >> > > > > > >> > > I can email it to you if you want to try it. If it works for > you, > > I > > > >> will > > > >> > > have Illya update it on xDevs. > > > >> > > > > > >> > > Todd > > > >> > > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > > >> randyevans2688@gmail.com> > > > >> > > wrote: > > > >> > > > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > > > program > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > https://xdevs.com/article/dmm > > > >> _noise/ > > > >> > ). > > > >> > > > It > > > >> > > > works fine with my Agilent 3458A and with a friend's HP-3458A > > and > > > >> his > > > >> > > > Agilent 3458A using the EZGPIB program.  The SW versions are > > > >> identical > > > >> > > with > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the Agilent > > > units > > > >> are > > > >> > > > (9.2).  However, both of my units work fine with the KE5FX > GPIB > > > >> Toolkit > > > >> > > > HP3458.EXE program to download the NVRAM CAL data.  This would > > > seem > > > >> to > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > > >> > > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run > (that > > is > > > >> > > > different from the Xdev program)?  It would be nice to see if > I > > > >> could > > > >> > get > > > >> > > > something to work other than the HP3458.EXE program.  Or if > any > > > one > > > >> has > > > >> > > > some ideas on what to look for. > > > >> > > > > > > >> > > > Thanks, > > > >> > > > > > > >> > > > Randy Evans > > > >> > > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > > >> randyevans2688@gmail.com > > > >> > > > > > >> > > > wrote: > > > >> > > > > > > >> > > > > I am hoping some of you experts might be able to assist > with a > > > >> > strange > > > >> > > > > problem i am having trying to make automated measurements > > using > > > >> > EZGPIB > > > >> > > > with > > > >> > > > > an Agilent and an HP 3458A.  I have a program given to me by > > > >> Martin > > > >> > > > > Reynolds, which is a variant on the Xdevs noise measurement > > > >> program. > > > >> > > > > Martin's program continuously reads the voltage measurements > > > >> > > sequentially > > > >> > > > > from the two meters and then stores then in a measurements > > file, > > > >> > along > > > >> > > > with > > > >> > > > > the temperature measurements from both meters.  The program > > > works > > > >> > fine > > > >> > > on > > > >> > > > > his Agilent and HP 3458As. > > > >> > > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements just > > > fine > > > >> but > > > >> > > > only > > > >> > > > > takes a voltage measurement from the Agilent unit.  The HP > > unit > > > >> will > > > >> > > not > > > >> > > > > make any voltage measurements although I can see both the > > 3458As > > > >> in > > > >> > > talk > > > >> > > > > states and, of course, it does sent the temperature > > > measurements. > > > >> > > > However, > > > >> > > > > if I turn the HP unit off and then on again, the HP will > start > > > to > > > >> > take > > > >> > > > > voltage and temperature measurements and send them to the > PC. > > > >> > > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > > >> > > > > > > > >> > > > > Thanks, > > > >> > > > > > > > >> > > > > Randy Evans > > > >> > > > > > > > >> > > > _______________________________________________ > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > > > mailman/listinfo/volt-nuts > > > >> > > > and follow the instructions there. > > > >> > > > > > > >> > > _______________________________________________ > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > > mailman/listinfo/volt-nuts > > > >> > > and follow the instructions there. > > > >> > > > > > >> > _______________________________________________ > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > >> > mailman/listinfo/volt-nuts > > > >> > and follow the instructions there. > > > >> > > > > >> _______________________________________________ > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > >> ailman/listinfo/volt-nuts > > > >> and follow the instructions there. > > > >> > > > > > > > > > > > _______________________________________________ > > > volt-nuts mailing list -- volt-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
TM
Todd Micallef
Sun, Dec 31, 2017 2:40 AM

Randy,

I have not written anything else for the 3458A using EzGPIB.  If you have a
National Instruments or Agilent adapters, I have a handful of Python code I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think that
the problem lies in how the triggering is configured. The triggering has
been changed in this script so it may work for you. There was an additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 randyevans2688@gmail.com
wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump program
will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef tmicallef@gmail.com
Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue with
3458A
Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters (Agilent
works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID

of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current version I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This

would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to see

if

I

could

get

something to work other than the HP3458.EXE program.  Or if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP

unit

will

not

make any voltage measurements although I can see both the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will

start

to

take

voltage and temperature measurements and send them to the

PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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To unsubscribe, go to https://www.febo.com/cgi-bin/
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and follow the instructions there.

Randy, I have not written anything else for the 3458A using EzGPIB. If you have a National Instruments or Agilent adapters, I have a handful of Python code I use to measure some of my standards. If you are reading the temperature from the HP meter, I would think that the problem lies in how the triggering is configured. The triggering has been changed in this script so it may work for you. There was an additional command added for disabling the buffer. The code can be posted here, if possible or I can email it to you for testing. Todd On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <randyevans2688@gmail.com> wrote: > Todd, thanks for the help. Where will you post the new code? > BTW, do you have any very simple code that is likely to work. I am > interested in seeing if anything other than KE5FX's memory dump program > will work on my HP3458A. > Thanks again, > Randy > > Sent from my Verizon, Samsung Galaxy smartphone > -------- Original message --------From: Todd Micallef <tmicallef@gmail.com> > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise voltage > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue with > 3458A > Randy, > > I found the Prologix adapters and have modified the code in the original > script. I am doing a test run now and will post the script when I am > certain I didn't make it worse. > > Todd > > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> > wrote: > > > Todd, > > > > I have swapped cables, moved the Prologix adapter to both meters (Agilent > > works, HP doesn't), tried Martins code as well as Xdevs's. I have not > > tried another PC yet, maybe the next step. > > > > Here is the code that Martin modified for two meters, as well as the > > modified Xdev's code per your directions (V1.02). > > > > Thanks, > > > > Randy > > > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> > > wrote: > > > > > Randy, > > > > > > I will continue to look for my adapter. I haven't used it for quite a > > > while. > > > > > > I have seen similar issues and swapped cables, moved the adapter to the > > > other meter, etc... One of my cables was bad from one side of the > > connector > > > to the other (on the same end of the cable) and caused me lots of > wasted > > > time. Weird reading errors were happening. > > > > > > Would you email me Martin's code so I can test it here and I will see > if > > > anything can be done to replicate your issue. > > > > > > Todd > > > > > > > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com > > > > > wrote: > > > > > > > Todd, > > > > > > > > I tried adding the line but it made no difference. > > > > > > > > Randy > > > > > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > > randyevans2688@gmail.com> > > > > wrote: > > > > > > > > > Todd, > > > > > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > > > > > > > procedure Init_Device; > > > > > begin; > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get ID > of > > > > meter > > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold > > > trigger > > > > > until meter can be setup > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > > > end; > > > > > > > > > > > > > > > Randy > > > > > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < > tmicallef@gmail.com > > > > > > > > wrote: > > > > > > > > > >> Randy, > > > > >> > > > > >> I am the person that wrote that EzGPIB script. It was my first > > before > > > I > > > > >> moved on to Python and I have only written a couple for the > > different > > > > >> meters I have on hand. Version 1.01 is the most current version I > > have > > > > for > > > > >> the 3458A. > > > > >> I see that I should have added at least one more command to the > > meter > > > > >> initialization. The additional init command is used in the > scripts > > on > > > > >> xDevs. > > > > >> > > > > >> Add the following line in the Init_Device procedure > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > > > >> > > > > >> This tells the meter to send an EOI on every read. > > > > >> > > > > >> I am looking for one of my Prologix adapters or I would test this. > > > When > > > > I > > > > >> find it, I will also test it. I want to make sure there are no > > further > > > > >> issues. > > > > >> Also, do both meters run the same firmware versions? I wonder if > the > > > HP > > > > >> meter is using a much older version. > > > > >> > > > > >> Todd > > > > >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > > randyevans2688@gmail.com > > > > > > > > > >> wrote: > > > > >> > > > > >> > Todd, > > > > >> > > > > > >> > I have version 1.01. Yes, please e-mail me your modified > version. > > > > >> Maybe it > > > > >> > will help. > > > > >> > > > > > >> > Thanks, > > > > >> > > > > > >> > Randy > > > > >> > > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > > tmicallef@gmail.com > > > > > > > > >> > wrote: > > > > >> > > > > > >> > > Randy, > > > > >> > > > > > > >> > > Is there a version number at the top of the file? I had two > > > versions > > > > >> > (1.00 > > > > >> > > and 1.01). I can't remember all that changed between the two > > since > > > > it > > > > >> has > > > > >> > > been a while but I did find an additional timeout code that > > > limited > > > > >> the > > > > >> > > wait time for reading data to 1 minute. I am guessing I had a > > > > problem > > > > >> > with > > > > >> > > mine and added it. > > > > >> > > > > > > >> > > I can email it to you if you want to try it. If it works for > > you, > > > I > > > > >> will > > > > >> > > have Illya update it on xDevs. > > > > >> > > > > > > >> > > Todd > > > > >> > > > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > > > >> randyevans2688@gmail.com> > > > > >> > > wrote: > > > > >> > > > > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > > > > program > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > > https://xdevs.com/article/dmm > > > > >> _noise/ > > > > >> > ). > > > > >> > > > It > > > > >> > > > works fine with my Agilent 3458A and with a friend's > HP-3458A > > > and > > > > >> his > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW versions are > > > > >> identical > > > > >> > > with > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the > Agilent > > > > units > > > > >> are > > > > >> > > > (9.2). However, both of my units work fine with the KE5FX > > GPIB > > > > >> Toolkit > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. This > would > > > > seem > > > > >> to > > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > > > >> > > > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run > > (that > > > is > > > > >> > > > different from the Xdev program)? It would be nice to see > if > > I > > > > >> could > > > > >> > get > > > > >> > > > something to work other than the HP3458.EXE program. Or if > > any > > > > one > > > > >> has > > > > >> > > > some ideas on what to look for. > > > > >> > > > > > > > >> > > > Thanks, > > > > >> > > > > > > > >> > > > Randy Evans > > > > >> > > > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > > > >> randyevans2688@gmail.com > > > > >> > > > > > > >> > > > wrote: > > > > >> > > > > > > > >> > > > > I am hoping some of you experts might be able to assist > > with a > > > > >> > strange > > > > >> > > > > problem i am having trying to make automated measurements > > > using > > > > >> > EZGPIB > > > > >> > > > with > > > > >> > > > > an Agilent and an HP 3458A. I have a program given to me > by > > > > >> Martin > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise > measurement > > > > >> program. > > > > >> > > > > Martin's program continuously reads the voltage > measurements > > > > >> > > sequentially > > > > >> > > > > from the two meters and then stores then in a measurements > > > file, > > > > >> > along > > > > >> > > > with > > > > >> > > > > the temperature measurements from both meters. The > program > > > > works > > > > >> > fine > > > > >> > > on > > > > >> > > > > his Agilent and HP 3458As. > > > > >> > > > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements > just > > > > fine > > > > >> but > > > > >> > > > only > > > > >> > > > > takes a voltage measurement from the Agilent unit. The HP > > > unit > > > > >> will > > > > >> > > not > > > > >> > > > > make any voltage measurements although I can see both the > > > 3458As > > > > >> in > > > > >> > > talk > > > > >> > > > > states and, of course, it does sent the temperature > > > > measurements. > > > > >> > > > However, > > > > >> > > > > if I turn the HP unit off and then on again, the HP will > > start > > > > to > > > > >> > take > > > > >> > > > > voltage and temperature measurements and send them to the > > PC. > > > > >> > > > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > > > >> > > > > > > > > >> > > > > Thanks, > > > > >> > > > > > > > > >> > > > > Randy Evans > > > > >> > > > > > > > > >> > > > _______________________________________________ > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > > > mailman/listinfo/volt-nuts > > > > >> > > > and follow the instructions there. > > > > >> > > > > > > > >> > > _______________________________________________ > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > > mailman/listinfo/volt-nuts > > > > >> > > and follow the instructions there. > > > > >> > > > > > > >> > _______________________________________________ > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > mailman/listinfo/volt-nuts > > > > >> > and follow the instructions there. > > > > >> > > > > > >> _______________________________________________ > > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > > >> ailman/listinfo/volt-nuts > > > > >> and follow the instructions there. > > > > >> > > > > > > > > > > > > > > _______________________________________________ > > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > mailman/listinfo/volt-nuts > > > > and follow the instructions there. > > > > > > > _______________________________________________ > > > volt-nuts mailing list -- volt-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
R
randyevans2688
Sun, Dec 31, 2017 3:12 AM

Todd,
If you don't mind,  just send the code directly to me.
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef tmicallef@gmail.com Date: 12/30/17  6:40 PM  (GMT-08:00) To: Discussion of precise voltage measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue with 3458A
Randy,

I have not written anything else for the 3458A using EzGPIB.  If you have a
National Instruments or Agilent adapters, I have a handful of Python code I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think that
the problem lies in how the triggering is configured. The triggering has
been changed in this script so it may work for you. There was an additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 randyevans2688@gmail.com
wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump program
will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef tmicallef@gmail.com
Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue with
3458A
Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters (Agilent
works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to the
other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
    EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID

of

meter

    if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then
EZGPIB_ScreenWriteLn(meter_id);

    EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
    EZGPIB_BusWriteData(gpib_address,'INBUF ON');
    EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
    EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current version I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
    EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This

would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to see

if

I

could

get

something to work other than the HP3458.EXE program.  Or if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.  The HP

unit

will

not

make any voltage measurements although I can see both the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will

start

to

take

voltage and temperature measurements and send them to the

PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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and follow the instructions there.

Todd, If you don't mind,  just send the code directly to me. Randy Sent from my Verizon, Samsung Galaxy smartphone -------- Original message --------From: Todd Micallef <tmicallef@gmail.com> Date: 12/30/17 6:40 PM (GMT-08:00) To: Discussion of precise voltage measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue with 3458A Randy, I have not written anything else for the 3458A using EzGPIB.  If you have a National Instruments or Agilent adapters, I have a handful of Python code I use to measure some of my standards. If you are reading the temperature from the HP meter, I would think that the problem lies in how the triggering is configured. The triggering has been changed in this script so it may work for you. There was an additional command added for disabling the buffer. The code can be posted here, if possible or I can email it to you for testing. Todd On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <randyevans2688@gmail.com> wrote: > Todd, thanks for the help.  Where will you post the new code? > BTW, do you have any very simple code that is likely to work.  I am > interested in seeing if anything other than KE5FX's memory dump program > will work on my HP3458A. > Thanks again, > Randy > > Sent from my Verizon, Samsung Galaxy smartphone > -------- Original message --------From: Todd Micallef <tmicallef@gmail.com> > Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue with > 3458A > Randy, > > I found the Prologix adapters and have modified the code in the original > script. I am doing a test run now and will post the script when I am > certain I didn't make it worse. > > Todd > > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> > wrote: > > > Todd, > > > > I have swapped cables, moved the Prologix adapter to both meters (Agilent > > works, HP doesn't), tried Martins code as well as Xdevs's.  I have not > > tried another PC yet, maybe the next step. > > > > Here is the code that Martin modified for two meters, as well as the > > modified Xdev's code per your directions (V1.02). > > > > Thanks, > > > > Randy > > > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> > > wrote: > > > > > Randy, > > > > > > I will continue to look for my adapter. I haven't used it for quite a > > > while. > > > > > > I have seen similar issues and swapped cables, moved the adapter to the > > > other meter, etc... One of my cables was bad from one side of the > > connector > > > to the other (on the same end of the cable) and caused me lots of > wasted > > > time. Weird reading errors were happening. > > > > > > Would you email me Martin's code so I can test it here and I will see > if > > > anything can be done to replicate your issue. > > > > > > Todd > > > > > > > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <randyevans2688@gmail.com > > > > > wrote: > > > > > > > Todd, > > > > > > > > I tried adding the line but it made no difference. > > > > > > > > Randy > > > > > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > > randyevans2688@gmail.com> > > > > wrote: > > > > > > > > > Todd, > > > > > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > > > > > > > procedure Init_Device; > > > > > begin; > > > > >    EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get ID > of > > > > meter > > > > >    if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > > > > >    EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold > > > trigger > > > > > until meter can be setup > > > > >    EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > > >    EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > > >    EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > > > end; > > > > > > > > > > > > > > > Randy > > > > > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < > tmicallef@gmail.com > > > > > > > > wrote: > > > > > > > > > >> Randy, > > > > >> > > > > >> I am the person that wrote that EzGPIB script. It was my first > > before > > > I > > > > >> moved on to Python and I have only written a couple for the > > different > > > > >> meters I have on hand. Version 1.01 is the most current version I > > have > > > > for > > > > >> the 3458A. > > > > >> I see that I should have added at least one more command to the > > meter > > > > >> initialization.  The additional init command is used in the > scripts > > on > > > > >> xDevs. > > > > >> > > > > >> Add the following line in the Init_Device procedure > > > > >>    EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > > > >> > > > > >> This tells the meter to send an EOI on every read. > > > > >> > > > > >> I am looking for one of my Prologix adapters or I would test this. > > > When > > > > I > > > > >> find it, I will also test it. I want to make sure there are no > > further > > > > >> issues. > > > > >> Also, do both meters run the same firmware versions? I wonder if > the > > > HP > > > > >> meter is using a much older version. > > > > >> > > > > >> Todd > > > > >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > > randyevans2688@gmail.com > > > > > > > > > >> wrote: > > > > >> > > > > >> > Todd, > > > > >> > > > > > >> > I have version 1.01. Yes, please e-mail me your modified > version. > > > > >> Maybe it > > > > >> > will help. > > > > >> > > > > > >> > Thanks, > > > > >> > > > > > >> > Randy > > > > >> > > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > > tmicallef@gmail.com > > > > > > > > >> > wrote: > > > > >> > > > > > >> > > Randy, > > > > >> > > > > > > >> > > Is there a version number at the top of the file? I had two > > > versions > > > > >> > (1.00 > > > > >> > > and 1.01). I can't remember all that changed between the two > > since > > > > it > > > > >> has > > > > >> > > been a while but I did find an additional timeout code that > > > limited > > > > >> the > > > > >> > > wait time for reading data to 1 minute. I am guessing I had a > > > > problem > > > > >> > with > > > > >> > > mine and added it. > > > > >> > > > > > > >> > > I can email it to you if you want to try it. If it works for > > you, > > > I > > > > >> will > > > > >> > > have Illya update it on xDevs. > > > > >> > > > > > > >> > > Todd > > > > >> > > > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > > > >> randyevans2688@gmail.com> > > > > >> > > wrote: > > > > >> > > > > > > >> > > > I am still unable to get my HP-3458A to work with the xdevs > > > > program > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > > https://xdevs.com/article/dmm > > > > >> _noise/ > > > > >> > ). > > > > >> > > > It > > > > >> > > > works fine with my Agilent 3458A and with a friend's > HP-3458A > > > and > > > > >> his > > > > >> > > > Agilent 3458A using the EZGPIB program.  The SW versions are > > > > >> identical > > > > >> > > with > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the > Agilent > > > > units > > > > >> are > > > > >> > > > (9.2).  However, both of my units work fine with the KE5FX > > GPIB > > > > >> Toolkit > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data.  This > would > > > > seem > > > > >> to > > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > > > >> > > > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run > > (that > > > is > > > > >> > > > different from the Xdev program)?  It would be nice to see > if > > I > > > > >> could > > > > >> > get > > > > >> > > > something to work other than the HP3458.EXE program.  Or if > > any > > > > one > > > > >> has > > > > >> > > > some ideas on what to look for. > > > > >> > > > > > > > >> > > > Thanks, > > > > >> > > > > > > > >> > > > Randy Evans > > > > >> > > > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > > > >> randyevans2688@gmail.com > > > > >> > > > > > > >> > > > wrote: > > > > >> > > > > > > > >> > > > > I am hoping some of you experts might be able to assist > > with a > > > > >> > strange > > > > >> > > > > problem i am having trying to make automated measurements > > > using > > > > >> > EZGPIB > > > > >> > > > with > > > > >> > > > > an Agilent and an HP 3458A.  I have a program given to me > by > > > > >> Martin > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise > measurement > > > > >> program. > > > > >> > > > > Martin's program continuously reads the voltage > measurements > > > > >> > > sequentially > > > > >> > > > > from the two meters and then stores then in a measurements > > > file, > > > > >> > along > > > > >> > > > with > > > > >> > > > > the temperature measurements from both meters.  The > program > > > > works > > > > >> > fine > > > > >> > > on > > > > >> > > > > his Agilent and HP 3458As. > > > > >> > > > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements > just > > > > fine > > > > >> but > > > > >> > > > only > > > > >> > > > > takes a voltage measurement from the Agilent unit.  The HP > > > unit > > > > >> will > > > > >> > > not > > > > >> > > > > make any voltage measurements although I can see both the > > > 3458As > > > > >> in > > > > >> > > talk > > > > >> > > > > states and, of course, it does sent the temperature > > > > measurements. > > > > >> > > > However, > > > > >> > > > > if I turn the HP unit off and then on again, the HP will > > start > > > > to > > > > >> > take > > > > >> > > > > voltage and temperature measurements and send them to the > > PC. > > > > >> > > > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > > > >> > > > > > > > > >> > > > > Thanks, > > > > >> > > > > > > > > >> > > > > Randy Evans > > > > >> > > > > > > > > >> > > > _______________________________________________ > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > > > mailman/listinfo/volt-nuts > > > > >> > > > and follow the instructions there. > > > > >> > > > > > > > >> > > _______________________________________________ > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > > mailman/listinfo/volt-nuts > > > > >> > > and follow the instructions there. > > > > >> > > > > > > >> > _______________________________________________ > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > >> > mailman/listinfo/volt-nuts > > > > >> > and follow the instructions there. > > > > >> > > > > > >> _______________________________________________ > > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > > >> ailman/listinfo/volt-nuts > > > > >> and follow the instructions there. > > > > >> > > > > > > > > > > > > > > _______________________________________________ > > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > mailman/listinfo/volt-nuts > > > > and follow the instructions there. > > > > > > > _______________________________________________ > > > volt-nuts mailing list -- volt-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
TM
Todd Micallef
Sun, Dec 31, 2017 3:27 AM

Randy,

I just sent it. I haven't modified Martin's code yet. That can be done once
you confirm it works for you.

Todd

On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 randyevans2688@gmail.com
wrote:

Todd,
If you don't mind,  just send the code directly to me.
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef tmicallef@gmail.com
Date: 12/30/17  6:40 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue with
3458A
Randy,

I have not written anything else for the 3458A using EzGPIB.  If you have a
National Instruments or Agilent adapters, I have a handful of Python code I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think that
the problem lies in how the triggering is configured. The triggering has
been changed in this script so it may work for you. There was an additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 randyevans2688@gmail.com
wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump program
will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <

Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue

with

3458A
Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters

(Agilent

works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite a
while.

I have seen similar issues and swapped cables, moved the adapter to

the

other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get

ID

of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current version

I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test

this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I had

a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the

xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions

are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This

would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to see

if

I

could

get

something to work other than the HP3458.EXE program.  Or

if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated

measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to

me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a

measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.  The

HP

unit

will

not

make any voltage measurements although I can see both

the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP will

start

to

take

voltage and temperature measurements and send them to

the

PC.

Any ideas on what might be causing the strange behavior?

Thanks,

Randy Evans


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Randy, I just sent it. I haven't modified Martin's code yet. That can be done once you confirm it works for you. Todd On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <randyevans2688@gmail.com> wrote: > Todd, > If you don't mind, just send the code directly to me. > Randy > > Sent from my Verizon, Samsung Galaxy smartphone > -------- Original message --------From: Todd Micallef <tmicallef@gmail.com> > Date: 12/30/17 6:40 PM (GMT-08:00) To: Discussion of precise voltage > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue with > 3458A > Randy, > > I have not written anything else for the 3458A using EzGPIB. If you have a > National Instruments or Agilent adapters, I have a handful of Python code I > use to measure some of my standards. > > If you are reading the temperature from the HP meter, I would think that > the problem lies in how the triggering is configured. The triggering has > been changed in this script so it may work for you. There was an additional > command added for disabling the buffer. > The code can be posted here, if possible or I can email it to you for > testing. > > Todd > > On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <randyevans2688@gmail.com> > wrote: > > > Todd, thanks for the help. Where will you post the new code? > > BTW, do you have any very simple code that is likely to work. I am > > interested in seeing if anything other than KE5FX's memory dump program > > will work on my HP3458A. > > Thanks again, > > Randy > > > > Sent from my Verizon, Samsung Galaxy smartphone > > -------- Original message --------From: Todd Micallef < > tmicallef@gmail.com> > > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise voltage > > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue > with > > 3458A > > Randy, > > > > I found the Prologix adapters and have modified the code in the original > > script. I am doing a test run now and will post the script when I am > > certain I didn't make it worse. > > > > Todd > > > > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> > > wrote: > > > > > Todd, > > > > > > I have swapped cables, moved the Prologix adapter to both meters > (Agilent > > > works, HP doesn't), tried Martins code as well as Xdevs's. I have not > > > tried another PC yet, maybe the next step. > > > > > > Here is the code that Martin modified for two meters, as well as the > > > modified Xdev's code per your directions (V1.02). > > > > > > Thanks, > > > > > > Randy > > > > > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> > > > wrote: > > > > > > > Randy, > > > > > > > > I will continue to look for my adapter. I haven't used it for quite a > > > > while. > > > > > > > > I have seen similar issues and swapped cables, moved the adapter to > the > > > > other meter, etc... One of my cables was bad from one side of the > > > connector > > > > to the other (on the same end of the cable) and caused me lots of > > wasted > > > > time. Weird reading errors were happening. > > > > > > > > Would you email me Martin's code so I can test it here and I will see > > if > > > > anything can be done to replicate your issue. > > > > > > > > Todd > > > > > > > > > > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans < > randyevans2688@gmail.com > > > > > > > wrote: > > > > > > > > > Todd, > > > > > > > > > > I tried adding the line but it made no difference. > > > > > > > > > > Randy > > > > > > > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > > > randyevans2688@gmail.com> > > > > > wrote: > > > > > > > > > > > Todd, > > > > > > > > > > > > Does it matter where I put the line in the Init_Device procedure? > > > > > > > > > > > > > > > > > > procedure Init_Device; > > > > > > begin; > > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get > ID > > of > > > > > meter > > > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then > > > > > > EZGPIB_ScreenWriteLn(meter_id); > > > > > > > > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold > > > > trigger > > > > > > until meter can be setup > > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > > > > > end; > > > > > > > > > > > > > > > > > > Randy > > > > > > > > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < > > tmicallef@gmail.com > > > > > > > > > > wrote: > > > > > > > > > > > >> Randy, > > > > > >> > > > > > >> I am the person that wrote that EzGPIB script. It was my first > > > before > > > > I > > > > > >> moved on to Python and I have only written a couple for the > > > different > > > > > >> meters I have on hand. Version 1.01 is the most current version > I > > > have > > > > > for > > > > > >> the 3458A. > > > > > >> I see that I should have added at least one more command to the > > > meter > > > > > >> initialization. The additional init command is used in the > > scripts > > > on > > > > > >> xDevs. > > > > > >> > > > > > >> Add the following line in the Init_Device procedure > > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > > > > >> > > > > > >> This tells the meter to send an EOI on every read. > > > > > >> > > > > > >> I am looking for one of my Prologix adapters or I would test > this. > > > > When > > > > > I > > > > > >> find it, I will also test it. I want to make sure there are no > > > further > > > > > >> issues. > > > > > >> Also, do both meters run the same firmware versions? I wonder if > > the > > > > HP > > > > > >> meter is using a much older version. > > > > > >> > > > > > >> Todd > > > > > >> > > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > > > randyevans2688@gmail.com > > > > > > > > > > > >> wrote: > > > > > >> > > > > > >> > Todd, > > > > > >> > > > > > > >> > I have version 1.01. Yes, please e-mail me your modified > > version. > > > > > >> Maybe it > > > > > >> > will help. > > > > > >> > > > > > > >> > Thanks, > > > > > >> > > > > > > >> > Randy > > > > > >> > > > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > > > tmicallef@gmail.com > > > > > > > > > > >> > wrote: > > > > > >> > > > > > > >> > > Randy, > > > > > >> > > > > > > > >> > > Is there a version number at the top of the file? I had two > > > > versions > > > > > >> > (1.00 > > > > > >> > > and 1.01). I can't remember all that changed between the two > > > since > > > > > it > > > > > >> has > > > > > >> > > been a while but I did find an additional timeout code that > > > > limited > > > > > >> the > > > > > >> > > wait time for reading data to 1 minute. I am guessing I had > a > > > > > problem > > > > > >> > with > > > > > >> > > mine and added it. > > > > > >> > > > > > > > >> > > I can email it to you if you want to try it. If it works for > > > you, > > > > I > > > > > >> will > > > > > >> > > have Illya update it on xDevs. > > > > > >> > > > > > > > >> > > Todd > > > > > >> > > > > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > > > > >> randyevans2688@gmail.com> > > > > > >> > > wrote: > > > > > >> > > > > > > > >> > > > I am still unable to get my HP-3458A to work with the > xdevs > > > > > program > > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > > > https://xdevs.com/article/dmm > > > > > >> _noise/ > > > > > >> > ). > > > > > >> > > > It > > > > > >> > > > works fine with my Agilent 3458A and with a friend's > > HP-3458A > > > > and > > > > > >> his > > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW versions > are > > > > > >> identical > > > > > >> > > with > > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the > > Agilent > > > > > units > > > > > >> are > > > > > >> > > > (9.2). However, both of my units work fine with the KE5FX > > > GPIB > > > > > >> Toolkit > > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. This > > would > > > > > seem > > > > > >> to > > > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > > > > > >> > > > > > > > > >> > > > Does anyone have a EZGPIB program that I could try to run > > > (that > > > > is > > > > > >> > > > different from the Xdev program)? It would be nice to see > > if > > > I > > > > > >> could > > > > > >> > get > > > > > >> > > > something to work other than the HP3458.EXE program. Or > if > > > any > > > > > one > > > > > >> has > > > > > >> > > > some ideas on what to look for. > > > > > >> > > > > > > > > >> > > > Thanks, > > > > > >> > > > > > > > > >> > > > Randy Evans > > > > > >> > > > > > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > > > > >> randyevans2688@gmail.com > > > > > >> > > > > > > > >> > > > wrote: > > > > > >> > > > > > > > > >> > > > > I am hoping some of you experts might be able to assist > > > with a > > > > > >> > strange > > > > > >> > > > > problem i am having trying to make automated > measurements > > > > using > > > > > >> > EZGPIB > > > > > >> > > > with > > > > > >> > > > > an Agilent and an HP 3458A. I have a program given to > me > > by > > > > > >> Martin > > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise > > measurement > > > > > >> program. > > > > > >> > > > > Martin's program continuously reads the voltage > > measurements > > > > > >> > > sequentially > > > > > >> > > > > from the two meters and then stores then in a > measurements > > > > file, > > > > > >> > along > > > > > >> > > > with > > > > > >> > > > > the temperature measurements from both meters. The > > program > > > > > works > > > > > >> > fine > > > > > >> > > on > > > > > >> > > > > his Agilent and HP 3458As. > > > > > >> > > > > > > > > > >> > > > > On my two 3458As, it takes the temperature measurements > > just > > > > > fine > > > > > >> but > > > > > >> > > > only > > > > > >> > > > > takes a voltage measurement from the Agilent unit. The > HP > > > > unit > > > > > >> will > > > > > >> > > not > > > > > >> > > > > make any voltage measurements although I can see both > the > > > > 3458As > > > > > >> in > > > > > >> > > talk > > > > > >> > > > > states and, of course, it does sent the temperature > > > > > measurements. > > > > > >> > > > However, > > > > > >> > > > > if I turn the HP unit off and then on again, the HP will > > > start > > > > > to > > > > > >> > take > > > > > >> > > > > voltage and temperature measurements and send them to > the > > > PC. > > > > > >> > > > > > > > > > >> > > > > Any ideas on what might be causing the strange behavior? > > > > > >> > > > > > > > > > >> > > > > Thanks, > > > > > >> > > > > > > > > > >> > > > > Randy Evans > > > > > >> > > > > > > > > > >> > > > _______________________________________________ > > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > > >> > > > mailman/listinfo/volt-nuts > > > > > >> > > > and follow the instructions there. > > > > > >> > > > > > > > > >> > > _______________________________________________ > > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > > >> > > mailman/listinfo/volt-nuts > > > > > >> > > and follow the instructions there. > > > > > >> > > > > > > > >> > _______________________________________________ > > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > > >> > mailman/listinfo/volt-nuts > > > > > >> > and follow the instructions there. > > > > > >> > > > > > > >> _______________________________________________ > > > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > > > > >> ailman/listinfo/volt-nuts > > > > > >> and follow the instructions there. > > > > > >> > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > > mailman/listinfo/volt-nuts > > > > > and follow the instructions there. > > > > > > > > > _______________________________________________ > > > > volt-nuts mailing list -- volt-nuts@febo.com > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > > mailman/listinfo/volt-nuts > > > > and follow the instructions there. > > > > > > > > > > _______________________________________________ > > > volt-nuts mailing list -- volt-nuts@febo.com > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > > mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
TM
Todd Micallef
Sun, Dec 31, 2017 3:43 AM

Randy,

I just remembered that I changed the duration from 30 minutes to 2 minutes
to speed up the test. I forgot to change it back.

Todd

On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef tmicallef@gmail.com wrote:

Randy,

I just sent it. I haven't modified Martin's code yet. That can be done
once you confirm it works for you.

Todd

On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <randyevans2688@gmail.com

wrote:

Todd,
If you don't mind,  just send the code directly to me.
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <
tmicallef@gmail.com> Date: 12/30/17  6:40 PM  (GMT-08:00) To: Discussion
of precise voltage measurement volt-nuts@febo.com Subject: Re:
[volt-nuts] GPIB Issue with 3458A
Randy,

I have not written anything else for the 3458A using EzGPIB.  If you have
a
National Instruments or Agilent adapters, I have a handful of Python code
I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think that
the problem lies in how the triggering is configured. The triggering has
been changed in this script so it may work for you. There was an
additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <randyevans2688@gmail.com

wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump program
will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <

Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue

with

3458A
Randy,

I found the Prologix adapters and have modified the code in the original
script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters

(Agilent

works, HP doesn't), tried Martins code as well as Xdevs's.  I have not
tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I will continue to look for my adapter. I haven't used it for quite

a

while.

I have seen similar issues and swapped cables, moved the adapter to

the

other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will

see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device

procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            // Get

ID

of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    // Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current

version I

have

for

the 3458A.
I see that I should have added at least one more command to the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test

this.

When

I

find it, I will also test it. I want to make sure there are no

further

issues.
Also, do both meters run the same firmware versions? I wonder

if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had two

versions

(1.00

and 1.01). I can't remember all that changed between the

two

since

it

has

been a while but I did find an additional timeout code that

limited

the

wait time for reading data to 1 minute. I am guessing I

had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works

for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the

xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW versions

are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the

KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.  This

would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to run

(that

is

different from the Xdev program)?  It would be nice to

see

if

I

could

get

something to work other than the HP3458.EXE program.  Or

if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to assist

with a

strange

problem i am having trying to make automated

measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given to

me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a

measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.

The HP

unit

will

not

make any voltage measurements although I can see both

the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP

will

start

to

take

voltage and temperature measurements and send them to

the

PC.

Any ideas on what might be causing the strange

behavior?

Thanks,

Randy Evans


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Randy, I just remembered that I changed the duration from 30 minutes to 2 minutes to speed up the test. I forgot to change it back. Todd On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef <tmicallef@gmail.com> wrote: > Randy, > > I just sent it. I haven't modified Martin's code yet. That can be done > once you confirm it works for you. > > Todd > > On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <randyevans2688@gmail.com > > wrote: > >> Todd, >> If you don't mind, just send the code directly to me. >> Randy >> >> Sent from my Verizon, Samsung Galaxy smartphone >> -------- Original message --------From: Todd Micallef < >> tmicallef@gmail.com> Date: 12/30/17 6:40 PM (GMT-08:00) To: Discussion >> of precise voltage measurement <volt-nuts@febo.com> Subject: Re: >> [volt-nuts] GPIB Issue with 3458A >> Randy, >> >> I have not written anything else for the 3458A using EzGPIB. If you have >> a >> National Instruments or Agilent adapters, I have a handful of Python code >> I >> use to measure some of my standards. >> >> If you are reading the temperature from the HP meter, I would think that >> the problem lies in how the triggering is configured. The triggering has >> been changed in this script so it may work for you. There was an >> additional >> command added for disabling the buffer. >> The code can be posted here, if possible or I can email it to you for >> testing. >> >> Todd >> >> On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <randyevans2688@gmail.com >> > >> wrote: >> >> > Todd, thanks for the help. Where will you post the new code? >> > BTW, do you have any very simple code that is likely to work. I am >> > interested in seeing if anything other than KE5FX's memory dump program >> > will work on my HP3458A. >> > Thanks again, >> > Randy >> > >> > Sent from my Verizon, Samsung Galaxy smartphone >> > -------- Original message --------From: Todd Micallef < >> tmicallef@gmail.com> >> > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise voltage >> > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue >> with >> > 3458A >> > Randy, >> > >> > I found the Prologix adapters and have modified the code in the original >> > script. I am doing a test run now and will post the script when I am >> > certain I didn't make it worse. >> > >> > Todd >> > >> > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <randyevans2688@gmail.com> >> > wrote: >> > >> > > Todd, >> > > >> > > I have swapped cables, moved the Prologix adapter to both meters >> (Agilent >> > > works, HP doesn't), tried Martins code as well as Xdevs's. I have not >> > > tried another PC yet, maybe the next step. >> > > >> > > Here is the code that Martin modified for two meters, as well as the >> > > modified Xdev's code per your directions (V1.02). >> > > >> > > Thanks, >> > > >> > > Randy >> > > >> > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com> >> > > wrote: >> > > >> > > > Randy, >> > > > >> > > > I will continue to look for my adapter. I haven't used it for quite >> a >> > > > while. >> > > > >> > > > I have seen similar issues and swapped cables, moved the adapter to >> the >> > > > other meter, etc... One of my cables was bad from one side of the >> > > connector >> > > > to the other (on the same end of the cable) and caused me lots of >> > wasted >> > > > time. Weird reading errors were happening. >> > > > >> > > > Would you email me Martin's code so I can test it here and I will >> see >> > if >> > > > anything can be done to replicate your issue. >> > > > >> > > > Todd >> > > > >> > > > >> > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans < >> randyevans2688@gmail.com >> > > >> > > > wrote: >> > > > >> > > > > Todd, >> > > > > >> > > > > I tried adding the line but it made no difference. >> > > > > >> > > > > Randy >> > > > > >> > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < >> > > randyevans2688@gmail.com> >> > > > > wrote: >> > > > > >> > > > > > Todd, >> > > > > > >> > > > > > Does it matter where I put the line in the Init_Device >> procedure? >> > > > > > >> > > > > > >> > > > > > procedure Init_Device; >> > > > > > begin; >> > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // Get >> ID >> > of >> > > > > meter >> > > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) then >> > > > > > EZGPIB_ScreenWriteLn(meter_id); >> > > > > > >> > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // Hold >> > > > trigger >> > > > > > until meter can be setup >> > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); >> > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); >> > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); >> > > > > > end; >> > > > > > >> > > > > > >> > > > > > Randy >> > > > > > >> > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < >> > tmicallef@gmail.com >> > > > >> > > > > > wrote: >> > > > > > >> > > > > >> Randy, >> > > > > >> >> > > > > >> I am the person that wrote that EzGPIB script. It was my first >> > > before >> > > > I >> > > > > >> moved on to Python and I have only written a couple for the >> > > different >> > > > > >> meters I have on hand. Version 1.01 is the most current >> version I >> > > have >> > > > > for >> > > > > >> the 3458A. >> > > > > >> I see that I should have added at least one more command to the >> > > meter >> > > > > >> initialization. The additional init command is used in the >> > scripts >> > > on >> > > > > >> xDevs. >> > > > > >> >> > > > > >> Add the following line in the Init_Device procedure >> > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); >> > > > > >> >> > > > > >> This tells the meter to send an EOI on every read. >> > > > > >> >> > > > > >> I am looking for one of my Prologix adapters or I would test >> this. >> > > > When >> > > > > I >> > > > > >> find it, I will also test it. I want to make sure there are no >> > > further >> > > > > >> issues. >> > > > > >> Also, do both meters run the same firmware versions? I wonder >> if >> > the >> > > > HP >> > > > > >> meter is using a much older version. >> > > > > >> >> > > > > >> Todd >> > > > > >> >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < >> > > > randyevans2688@gmail.com >> > > > > > >> > > > > >> wrote: >> > > > > >> >> > > > > >> > Todd, >> > > > > >> > >> > > > > >> > I have version 1.01. Yes, please e-mail me your modified >> > version. >> > > > > >> Maybe it >> > > > > >> > will help. >> > > > > >> > >> > > > > >> > Thanks, >> > > > > >> > >> > > > > >> > Randy >> > > > > >> > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < >> > > tmicallef@gmail.com >> > > > > >> > > > > >> > wrote: >> > > > > >> > >> > > > > >> > > Randy, >> > > > > >> > > >> > > > > >> > > Is there a version number at the top of the file? I had two >> > > > versions >> > > > > >> > (1.00 >> > > > > >> > > and 1.01). I can't remember all that changed between the >> two >> > > since >> > > > > it >> > > > > >> has >> > > > > >> > > been a while but I did find an additional timeout code that >> > > > limited >> > > > > >> the >> > > > > >> > > wait time for reading data to 1 minute. I am guessing I >> had a >> > > > > problem >> > > > > >> > with >> > > > > >> > > mine and added it. >> > > > > >> > > >> > > > > >> > > I can email it to you if you want to try it. If it works >> for >> > > you, >> > > > I >> > > > > >> will >> > > > > >> > > have Illya update it on xDevs. >> > > > > >> > > >> > > > > >> > > Todd >> > > > > >> > > >> > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < >> > > > > >> randyevans2688@gmail.com> >> > > > > >> > > wrote: >> > > > > >> > > >> > > > > >> > > > I am still unable to get my HP-3458A to work with the >> xdevs >> > > > > program >> > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( >> > > https://xdevs.com/article/dmm >> > > > > >> _noise/ >> > > > > >> > ). >> > > > > >> > > > It >> > > > > >> > > > works fine with my Agilent 3458A and with a friend's >> > HP-3458A >> > > > and >> > > > > >> his >> > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW versions >> are >> > > > > >> identical >> > > > > >> > > with >> > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the >> > Agilent >> > > > > units >> > > > > >> are >> > > > > >> > > > (9.2). However, both of my units work fine with the >> KE5FX >> > > GPIB >> > > > > >> Toolkit >> > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. This >> > would >> > > > > seem >> > > > > >> to >> > > > > >> > > > indicate that my HP-3458 GPIB works at least partially. >> > > > > >> > > > >> > > > > >> > > > Does anyone have a EZGPIB program that I could try to run >> > > (that >> > > > is >> > > > > >> > > > different from the Xdev program)? It would be nice to >> see >> > if >> > > I >> > > > > >> could >> > > > > >> > get >> > > > > >> > > > something to work other than the HP3458.EXE program. Or >> if >> > > any >> > > > > one >> > > > > >> has >> > > > > >> > > > some ideas on what to look for. >> > > > > >> > > > >> > > > > >> > > > Thanks, >> > > > > >> > > > >> > > > > >> > > > Randy Evans >> > > > > >> > > > >> > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < >> > > > > >> randyevans2688@gmail.com >> > > > > >> > > >> > > > > >> > > > wrote: >> > > > > >> > > > >> > > > > >> > > > > I am hoping some of you experts might be able to assist >> > > with a >> > > > > >> > strange >> > > > > >> > > > > problem i am having trying to make automated >> measurements >> > > > using >> > > > > >> > EZGPIB >> > > > > >> > > > with >> > > > > >> > > > > an Agilent and an HP 3458A. I have a program given to >> me >> > by >> > > > > >> Martin >> > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise >> > measurement >> > > > > >> program. >> > > > > >> > > > > Martin's program continuously reads the voltage >> > measurements >> > > > > >> > > sequentially >> > > > > >> > > > > from the two meters and then stores then in a >> measurements >> > > > file, >> > > > > >> > along >> > > > > >> > > > with >> > > > > >> > > > > the temperature measurements from both meters. The >> > program >> > > > > works >> > > > > >> > fine >> > > > > >> > > on >> > > > > >> > > > > his Agilent and HP 3458As. >> > > > > >> > > > > >> > > > > >> > > > > On my two 3458As, it takes the temperature measurements >> > just >> > > > > fine >> > > > > >> but >> > > > > >> > > > only >> > > > > >> > > > > takes a voltage measurement from the Agilent unit. >> The HP >> > > > unit >> > > > > >> will >> > > > > >> > > not >> > > > > >> > > > > make any voltage measurements although I can see both >> the >> > > > 3458As >> > > > > >> in >> > > > > >> > > talk >> > > > > >> > > > > states and, of course, it does sent the temperature >> > > > > measurements. >> > > > > >> > > > However, >> > > > > >> > > > > if I turn the HP unit off and then on again, the HP >> will >> > > start >> > > > > to >> > > > > >> > take >> > > > > >> > > > > voltage and temperature measurements and send them to >> the >> > > PC. >> > > > > >> > > > > >> > > > > >> > > > > Any ideas on what might be causing the strange >> behavior? >> > > > > >> > > > > >> > > > > >> > > > > Thanks, >> > > > > >> > > > > >> > > > > >> > > > > Randy Evans >> > > > > >> > > > > >> > > > > >> > > > _______________________________________________ >> > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com >> > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > > > >> > > > mailman/listinfo/volt-nuts >> > > > > >> > > > and follow the instructions there. >> > > > > >> > > > >> > > > > >> > > _______________________________________________ >> > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com >> > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > > > >> > > mailman/listinfo/volt-nuts >> > > > > >> > > and follow the instructions there. >> > > > > >> > > >> > > > > >> > _______________________________________________ >> > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com >> > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > > > >> > mailman/listinfo/volt-nuts >> > > > > >> > and follow the instructions there. >> > > > > >> > >> > > > > >> _______________________________________________ >> > > > > >> volt-nuts mailing list -- volt-nuts@febo.com >> > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> > > > > >> ailman/listinfo/volt-nuts >> > > > > >> and follow the instructions there. >> > > > > >> >> > > > > > >> > > > > > >> > > > > _______________________________________________ >> > > > > volt-nuts mailing list -- volt-nuts@febo.com >> > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > > > mailman/listinfo/volt-nuts >> > > > > and follow the instructions there. >> > > > > >> > > > _______________________________________________ >> > > > volt-nuts mailing list -- volt-nuts@febo.com >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > > mailman/listinfo/volt-nuts >> > > > and follow the instructions there. >> > > > >> > > >> > > _______________________________________________ >> > > volt-nuts mailing list -- volt-nuts@febo.com >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > > mailman/listinfo/volt-nuts >> > > and follow the instructions there. >> > > >> > _______________________________________________ >> > volt-nuts mailing list -- volt-nuts@febo.com >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > mailman/listinfo/volt-nuts >> > and follow the instructions there. >> > _______________________________________________ >> > volt-nuts mailing list -- volt-nuts@febo.com >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ >> > mailman/listinfo/volt-nuts >> > and follow the instructions there. >> > >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/volt-nuts >> and follow the instructions there. >> _______________________________________________ >> volt-nuts mailing list -- volt-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/m >> ailman/listinfo/volt-nuts >> and follow the instructions there. >> > >
RE
Randy Evans
Sun, Dec 31, 2017 4:18 AM

Todd,

Same as before.  Still not working.  All it does is print out "HP3458A" on
the output console and then just sits there.

Randy

On Sat, Dec 30, 2017 at 7:43 PM, Todd Micallef tmicallef@gmail.com wrote:

Randy,

I just remembered that I changed the duration from 30 minutes to 2 minutes
to speed up the test. I forgot to change it back.

Todd

On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I just sent it. I haven't modified Martin's code yet. That can be done
once you confirm it works for you.

Todd

On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <

wrote:

Todd,
If you don't mind,  just send the code directly to me.
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <
tmicallef@gmail.com> Date: 12/30/17  6:40 PM  (GMT-08:00) To:

Discussion

of precise voltage measurement volt-nuts@febo.com Subject: Re:
[volt-nuts] GPIB Issue with 3458A
Randy,

I have not written anything else for the 3458A using EzGPIB.  If you

have

a
National Instruments or Agilent adapters, I have a handful of Python

code

I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think that
the problem lies in how the triggering is configured. The triggering has
been changed in this script so it may work for you. There was an
additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <

wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump

program

will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <

Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise voltage
measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB Issue

with

3458A
Randy,

I found the Prologix adapters and have modified the code in the

original

script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <

wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters

(Agilent

works, HP doesn't), tried Martins code as well as Xdevs's.  I have

not

tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as the
modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com

wrote:

Randy,

I will continue to look for my adapter. I haven't used it for

quite

a

while.

I have seen similar issues and swapped cables, moved the adapter

to

the

other meter, etc... One of my cables was bad from one side of the

connector

to the other (on the same end of the cable) and caused me lots of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I will

see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device

procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            //

Get

ID

of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout)

then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    //

Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my

first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current

version I

have

for

the 3458A.
I see that I should have added at least one more command to

the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would test

this.

When

I

find it, I will also test it. I want to make sure there are

no

further

issues.
Also, do both meters run the same firmware versions? I wonder

if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had

two

versions

(1.00

and 1.01). I can't remember all that changed between the

two

since

it

has

been a while but I did find an additional timeout code

that

limited

the

wait time for reading data to 1 minute. I am guessing I

had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it works

for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the

xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW

versions

are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the

KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.

This

would

seem

to

indicate that my HP-3458 GPIB works at least partially.

Does anyone have a EZGPIB program that I could try to

run

(that

is

different from the Xdev program)?  It would be nice to

see

if

I

could

get

something to work other than the HP3458.EXE program.

Or

if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to

assist

with a

strange

problem i am having trying to make automated

measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given

to

me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a

measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature

measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.

The HP

unit

will

not

make any voltage measurements although I can see both

the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP

will

start

to

take

voltage and temperature measurements and send them to

the

PC.

Any ideas on what might be causing the strange

behavior?

Thanks,

Randy Evans


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Todd, Same as before. Still not working. All it does is print out "HP3458A" on the output console and then just sits there. Randy On Sat, Dec 30, 2017 at 7:43 PM, Todd Micallef <tmicallef@gmail.com> wrote: > Randy, > > I just remembered that I changed the duration from 30 minutes to 2 minutes > to speed up the test. I forgot to change it back. > > Todd > > On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > > > Randy, > > > > I just sent it. I haven't modified Martin's code yet. That can be done > > once you confirm it works for you. > > > > Todd > > > > On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 < > randyevans2688@gmail.com > > > wrote: > > > >> Todd, > >> If you don't mind, just send the code directly to me. > >> Randy > >> > >> Sent from my Verizon, Samsung Galaxy smartphone > >> -------- Original message --------From: Todd Micallef < > >> tmicallef@gmail.com> Date: 12/30/17 6:40 PM (GMT-08:00) To: > Discussion > >> of precise voltage measurement <volt-nuts@febo.com> Subject: Re: > >> [volt-nuts] GPIB Issue with 3458A > >> Randy, > >> > >> I have not written anything else for the 3458A using EzGPIB. If you > have > >> a > >> National Instruments or Agilent adapters, I have a handful of Python > code > >> I > >> use to measure some of my standards. > >> > >> If you are reading the temperature from the HP meter, I would think that > >> the problem lies in how the triggering is configured. The triggering has > >> been changed in this script so it may work for you. There was an > >> additional > >> command added for disabling the buffer. > >> The code can be posted here, if possible or I can email it to you for > >> testing. > >> > >> Todd > >> > >> On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 < > randyevans2688@gmail.com > >> > > >> wrote: > >> > >> > Todd, thanks for the help. Where will you post the new code? > >> > BTW, do you have any very simple code that is likely to work. I am > >> > interested in seeing if anything other than KE5FX's memory dump > program > >> > will work on my HP3458A. > >> > Thanks again, > >> > Randy > >> > > >> > Sent from my Verizon, Samsung Galaxy smartphone > >> > -------- Original message --------From: Todd Micallef < > >> tmicallef@gmail.com> > >> > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise voltage > >> > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB Issue > >> with > >> > 3458A > >> > Randy, > >> > > >> > I found the Prologix adapters and have modified the code in the > original > >> > script. I am doing a test run now and will post the script when I am > >> > certain I didn't make it worse. > >> > > >> > Todd > >> > > >> > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans < > randyevans2688@gmail.com> > >> > wrote: > >> > > >> > > Todd, > >> > > > >> > > I have swapped cables, moved the Prologix adapter to both meters > >> (Agilent > >> > > works, HP doesn't), tried Martins code as well as Xdevs's. I have > not > >> > > tried another PC yet, maybe the next step. > >> > > > >> > > Here is the code that Martin modified for two meters, as well as the > >> > > modified Xdev's code per your directions (V1.02). > >> > > > >> > > Thanks, > >> > > > >> > > Randy > >> > > > >> > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <tmicallef@gmail.com > > > >> > > wrote: > >> > > > >> > > > Randy, > >> > > > > >> > > > I will continue to look for my adapter. I haven't used it for > quite > >> a > >> > > > while. > >> > > > > >> > > > I have seen similar issues and swapped cables, moved the adapter > to > >> the > >> > > > other meter, etc... One of my cables was bad from one side of the > >> > > connector > >> > > > to the other (on the same end of the cable) and caused me lots of > >> > wasted > >> > > > time. Weird reading errors were happening. > >> > > > > >> > > > Would you email me Martin's code so I can test it here and I will > >> see > >> > if > >> > > > anything can be done to replicate your issue. > >> > > > > >> > > > Todd > >> > > > > >> > > > > >> > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans < > >> randyevans2688@gmail.com > >> > > > >> > > > wrote: > >> > > > > >> > > > > Todd, > >> > > > > > >> > > > > I tried adding the line but it made no difference. > >> > > > > > >> > > > > Randy > >> > > > > > >> > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > >> > > randyevans2688@gmail.com> > >> > > > > wrote: > >> > > > > > >> > > > > > Todd, > >> > > > > > > >> > > > > > Does it matter where I put the line in the Init_Device > >> procedure? > >> > > > > > > >> > > > > > > >> > > > > > procedure Init_Device; > >> > > > > > begin; > >> > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // > Get > >> ID > >> > of > >> > > > > meter > >> > > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) > then > >> > > > > > EZGPIB_ScreenWriteLn(meter_id); > >> > > > > > > >> > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // > Hold > >> > > > trigger > >> > > > > > until meter can be setup > >> > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > >> > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > >> > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > >> > > > > > end; > >> > > > > > > >> > > > > > > >> > > > > > Randy > >> > > > > > > >> > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < > >> > tmicallef@gmail.com > >> > > > > >> > > > > > wrote: > >> > > > > > > >> > > > > >> Randy, > >> > > > > >> > >> > > > > >> I am the person that wrote that EzGPIB script. It was my > first > >> > > before > >> > > > I > >> > > > > >> moved on to Python and I have only written a couple for the > >> > > different > >> > > > > >> meters I have on hand. Version 1.01 is the most current > >> version I > >> > > have > >> > > > > for > >> > > > > >> the 3458A. > >> > > > > >> I see that I should have added at least one more command to > the > >> > > meter > >> > > > > >> initialization. The additional init command is used in the > >> > scripts > >> > > on > >> > > > > >> xDevs. > >> > > > > >> > >> > > > > >> Add the following line in the Init_Device procedure > >> > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > >> > > > > >> > >> > > > > >> This tells the meter to send an EOI on every read. > >> > > > > >> > >> > > > > >> I am looking for one of my Prologix adapters or I would test > >> this. > >> > > > When > >> > > > > I > >> > > > > >> find it, I will also test it. I want to make sure there are > no > >> > > further > >> > > > > >> issues. > >> > > > > >> Also, do both meters run the same firmware versions? I wonder > >> if > >> > the > >> > > > HP > >> > > > > >> meter is using a much older version. > >> > > > > >> > >> > > > > >> Todd > >> > > > > >> > >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > >> > > > randyevans2688@gmail.com > >> > > > > > > >> > > > > >> wrote: > >> > > > > >> > >> > > > > >> > Todd, > >> > > > > >> > > >> > > > > >> > I have version 1.01. Yes, please e-mail me your modified > >> > version. > >> > > > > >> Maybe it > >> > > > > >> > will help. > >> > > > > >> > > >> > > > > >> > Thanks, > >> > > > > >> > > >> > > > > >> > Randy > >> > > > > >> > > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > >> > > tmicallef@gmail.com > >> > > > > > >> > > > > >> > wrote: > >> > > > > >> > > >> > > > > >> > > Randy, > >> > > > > >> > > > >> > > > > >> > > Is there a version number at the top of the file? I had > two > >> > > > versions > >> > > > > >> > (1.00 > >> > > > > >> > > and 1.01). I can't remember all that changed between the > >> two > >> > > since > >> > > > > it > >> > > > > >> has > >> > > > > >> > > been a while but I did find an additional timeout code > that > >> > > > limited > >> > > > > >> the > >> > > > > >> > > wait time for reading data to 1 minute. I am guessing I > >> had a > >> > > > > problem > >> > > > > >> > with > >> > > > > >> > > mine and added it. > >> > > > > >> > > > >> > > > > >> > > I can email it to you if you want to try it. If it works > >> for > >> > > you, > >> > > > I > >> > > > > >> will > >> > > > > >> > > have Illya update it on xDevs. > >> > > > > >> > > > >> > > > > >> > > Todd > >> > > > > >> > > > >> > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > >> > > > > >> randyevans2688@gmail.com> > >> > > > > >> > > wrote: > >> > > > > >> > > > >> > > > > >> > > > I am still unable to get my HP-3458A to work with the > >> xdevs > >> > > > > program > >> > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > >> > > https://xdevs.com/article/dmm > >> > > > > >> _noise/ > >> > > > > >> > ). > >> > > > > >> > > > It > >> > > > > >> > > > works fine with my Agilent 3458A and with a friend's > >> > HP-3458A > >> > > > and > >> > > > > >> his > >> > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW > versions > >> are > >> > > > > >> identical > >> > > > > >> > > with > >> > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the > >> > Agilent > >> > > > > units > >> > > > > >> are > >> > > > > >> > > > (9.2). However, both of my units work fine with the > >> KE5FX > >> > > GPIB > >> > > > > >> Toolkit > >> > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. > This > >> > would > >> > > > > seem > >> > > > > >> to > >> > > > > >> > > > indicate that my HP-3458 GPIB works at least partially. > >> > > > > >> > > > > >> > > > > >> > > > Does anyone have a EZGPIB program that I could try to > run > >> > > (that > >> > > > is > >> > > > > >> > > > different from the Xdev program)? It would be nice to > >> see > >> > if > >> > > I > >> > > > > >> could > >> > > > > >> > get > >> > > > > >> > > > something to work other than the HP3458.EXE program. > Or > >> if > >> > > any > >> > > > > one > >> > > > > >> has > >> > > > > >> > > > some ideas on what to look for. > >> > > > > >> > > > > >> > > > > >> > > > Thanks, > >> > > > > >> > > > > >> > > > > >> > > > Randy Evans > >> > > > > >> > > > > >> > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > >> > > > > >> randyevans2688@gmail.com > >> > > > > >> > > > >> > > > > >> > > > wrote: > >> > > > > >> > > > > >> > > > > >> > > > > I am hoping some of you experts might be able to > assist > >> > > with a > >> > > > > >> > strange > >> > > > > >> > > > > problem i am having trying to make automated > >> measurements > >> > > > using > >> > > > > >> > EZGPIB > >> > > > > >> > > > with > >> > > > > >> > > > > an Agilent and an HP 3458A. I have a program given > to > >> me > >> > by > >> > > > > >> Martin > >> > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise > >> > measurement > >> > > > > >> program. > >> > > > > >> > > > > Martin's program continuously reads the voltage > >> > measurements > >> > > > > >> > > sequentially > >> > > > > >> > > > > from the two meters and then stores then in a > >> measurements > >> > > > file, > >> > > > > >> > along > >> > > > > >> > > > with > >> > > > > >> > > > > the temperature measurements from both meters. The > >> > program > >> > > > > works > >> > > > > >> > fine > >> > > > > >> > > on > >> > > > > >> > > > > his Agilent and HP 3458As. > >> > > > > >> > > > > > >> > > > > >> > > > > On my two 3458As, it takes the temperature > measurements > >> > just > >> > > > > fine > >> > > > > >> but > >> > > > > >> > > > only > >> > > > > >> > > > > takes a voltage measurement from the Agilent unit. > >> The HP > >> > > > unit > >> > > > > >> will > >> > > > > >> > > not > >> > > > > >> > > > > make any voltage measurements although I can see both > >> the > >> > > > 3458As > >> > > > > >> in > >> > > > > >> > > talk > >> > > > > >> > > > > states and, of course, it does sent the temperature > >> > > > > measurements. > >> > > > > >> > > > However, > >> > > > > >> > > > > if I turn the HP unit off and then on again, the HP > >> will > >> > > start > >> > > > > to > >> > > > > >> > take > >> > > > > >> > > > > voltage and temperature measurements and send them to > >> the > >> > > PC. > >> > > > > >> > > > > > >> > > > > >> > > > > Any ideas on what might be causing the strange > >> behavior? > >> > > > > >> > > > > > >> > > > > >> > > > > Thanks, > >> > > > > >> > > > > > >> > > > > >> > > > > Randy Evans > >> > > > > >> > > > > > >> > > > > >> > > > _______________________________________________ > >> > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > > >> > > > mailman/listinfo/volt-nuts > >> > > > > >> > > > and follow the instructions there. > >> > > > > >> > > > > >> > > > > >> > > _______________________________________________ > >> > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > > >> > > mailman/listinfo/volt-nuts > >> > > > > >> > > and follow the instructions there. > >> > > > > >> > > > >> > > > > >> > _______________________________________________ > >> > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > > >> > mailman/listinfo/volt-nuts > >> > > > > >> > and follow the instructions there. > >> > > > > >> > > >> > > > > >> _______________________________________________ > >> > > > > >> volt-nuts mailing list -- volt-nuts@febo.com > >> > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > >> > > > > >> ailman/listinfo/volt-nuts > >> > > > > >> and follow the instructions there. > >> > > > > >> > >> > > > > > > >> > > > > > > >> > > > > _______________________________________________ > >> > > > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > > mailman/listinfo/volt-nuts > >> > > > > and follow the instructions there. > >> > > > > > >> > > > _______________________________________________ > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > > mailman/listinfo/volt-nuts > >> > > > and follow the instructions there. > >> > > > > >> > > > >> > > _______________________________________________ > >> > > volt-nuts mailing list -- volt-nuts@febo.com > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > > mailman/listinfo/volt-nuts > >> > > and follow the instructions there. > >> > > > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@febo.com > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > mailman/listinfo/volt-nuts > >> > and follow the instructions there. > >> > _______________________________________________ > >> > volt-nuts mailing list -- volt-nuts@febo.com > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> > mailman/listinfo/volt-nuts > >> > and follow the instructions there. > >> > > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > >> ailman/listinfo/volt-nuts > >> and follow the instructions there. > >> _______________________________________________ > >> volt-nuts mailing list -- volt-nuts@febo.com > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > >> ailman/listinfo/volt-nuts > >> and follow the instructions there. > >> > > > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >
TM
Todd Micallef
Sun, Dec 31, 2017 4:58 AM

Randy,

Short of swapping out the A5 digital board I have no other ideas. If you
don't have a NI or Agilent adapter, I am sure I can find a spare for you to
test.

There is a Service Note 3458A-13A that deals with GPIB communication
failures. There is a test within the document to see if a shorting jumper
needs to be installed.
I can try reducing the code to something minimal for a quick test if you
want. It will take some time in the morning.

Todd

On Sat, Dec 30, 2017 at 11:18 PM, Randy Evans randyevans2688@gmail.com
wrote:

Todd,

Same as before.  Still not working.  All it does is print out "HP3458A" on
the output console and then just sits there.

Randy

On Sat, Dec 30, 2017 at 7:43 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I just remembered that I changed the duration from 30 minutes to 2

minutes

to speed up the test. I forgot to change it back.

Todd

On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef tmicallef@gmail.com
wrote:

Randy,

I just sent it. I haven't modified Martin's code yet. That can be done
once you confirm it works for you.

Todd

On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 <

wrote:

Todd,
If you don't mind,  just send the code directly to me.
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <
tmicallef@gmail.com> Date: 12/30/17  6:40 PM  (GMT-08:00) To:

Discussion

of precise voltage measurement volt-nuts@febo.com Subject: Re:
[volt-nuts] GPIB Issue with 3458A
Randy,

I have not written anything else for the 3458A using EzGPIB.  If you

have

a
National Instruments or Agilent adapters, I have a handful of Python

code

I
use to measure some of my standards.

If you are reading the temperature from the HP meter, I would think

that

the problem lies in how the triggering is configured. The triggering

has

been changed in this script so it may work for you. There was an
additional
command added for disabling the buffer.
The code can be posted here, if possible or I can email it to you for
testing.

Todd

On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 <

wrote:

Todd, thanks for the help.  Where will you post the new code?
BTW, do you have any very simple code that is likely to work.  I am
interested in seeing if anything other than KE5FX's memory dump

program

will work on my HP3458A.
Thanks again,
Randy

Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Todd Micallef <

Date: 12/30/17  6:13 PM  (GMT-08:00) To: Discussion of precise

voltage

measurement volt-nuts@febo.com Subject: Re: [volt-nuts] GPIB

Issue

with

3458A
Randy,

I found the Prologix adapters and have modified the code in the

original

script. I am doing a test run now and will post the script when I am
certain I didn't make it worse.

Todd

On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans <

wrote:

Todd,

I have swapped cables, moved the Prologix adapter to both meters

(Agilent

works, HP doesn't), tried Martins code as well as Xdevs's.  I have

not

tried another PC yet, maybe the next step.

Here is the code that Martin modified for two meters, as well as

the

modified Xdev's code per your directions (V1.02).

Thanks,

Randy

On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef <

wrote:

Randy,

I will continue to look for my adapter. I haven't used it for

quite

a

while.

I have seen similar issues and swapped cables, moved the adapter

to

the

other meter, etc... One of my cables was bad from one side of

the

connector

to the other (on the same end of the cable) and caused me lots

of

wasted

time. Weird reading errors were happening.

Would you email me Martin's code so I can test it here and I

will

see

if

anything can be done to replicate your issue.

Todd

On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans <

wrote:

Todd,

I tried adding the line but it made no difference.

Randy

On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans <

wrote:

Todd,

Does it matter where I put the line in the Init_Device

procedure?

procedure Init_Device;
begin;
EZGPIB_BusWriteData(gpib_address,GET_ID);            //

Get

ID

of

meter

if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout)

then

EZGPIB_ScreenWriteLn(meter_id);

EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE);    //

Hold

trigger

until meter can be setup
EZGPIB_BusWriteData(gpib_address,'INBUF ON');
EZGPIB_BusWriteData(gpib_address,AUTO_ZERO);
EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT);
end;

Randy

On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef <

wrote:

Randy,

I am the person that wrote that EzGPIB script. It was my

first

before

I

moved on to Python and I have only written a couple for the

different

meters I have on hand. Version 1.01 is the most current

version I

have

for

the 3458A.
I see that I should have added at least one more command to

the

meter

initialization.  The additional init command is used in the

scripts

on

xDevs.

Add the following line in the Init_Device procedure
EZGPIB_BusWriteData(gpib_address,'END ALWAYS');

This tells the meter to send an EOI on every read.

I am looking for one of my Prologix adapters or I would

test

this.

When

I

find it, I will also test it. I want to make sure there are

no

further

issues.
Also, do both meters run the same firmware versions? I

wonder

if

the

HP

meter is using a much older version.

Todd

On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans <

wrote:

Todd,

I have version 1.01. Yes, please e-mail me your modified

version.

Maybe it

will help.

Thanks,

Randy

On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef <

wrote:

Randy,

Is there a version number at the top of the file? I had

two

versions

(1.00

and 1.01). I can't remember all that changed between

the

two

since

it

has

been a while but I did find an additional timeout code

that

limited

the

wait time for reading data to 1 minute. I am guessing I

had a

problem

with

mine and added it.

I can email it to you if you want to try it. If it

works

for

you,

I

will

have Illya update it on xDevs.

Todd

On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans <

wrote:

I am still unable to get my HP-3458A to work with the

xdevs

program

"HP3458A_Measure_DMM_Noise.488" (

_noise/

).

It
works fine with my Agilent 3458A and with a friend's

HP-3458A

and

his

Agilent 3458A using the EZGPIB program.  The SW

versions

are

identical

with

my friend's DMMs, the HP units are (8.2) and with the

Agilent

units

are

(9.2).  However, both of my units work fine with the

KE5FX

GPIB

Toolkit

HP3458.EXE program to download the NVRAM CAL data.

This

would

seem

to

indicate that my HP-3458 GPIB works at least

partially.

Does anyone have a EZGPIB program that I could try to

run

(that

is

different from the Xdev program)?  It would be nice

to

see

if

I

could

get

something to work other than the HP3458.EXE program.

Or

if

any

one

has

some ideas on what to look for.

Thanks,

Randy Evans

On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans <

wrote:

I am hoping some of you experts might be able to

assist

with a

strange

problem i am having trying to make automated

measurements

using

EZGPIB

with

an Agilent and an HP 3458A.  I have a program given

to

me

by

Martin

Reynolds, which is a variant on the Xdevs noise

measurement

program.

Martin's program continuously reads the voltage

measurements

sequentially

from the two meters and then stores then in a

measurements

file,

along

with

the temperature measurements from both meters.  The

program

works

fine

on

his Agilent and HP 3458As.

On my two 3458As, it takes the temperature

measurements

just

fine

but

only

takes a voltage measurement from the Agilent unit.

The HP

unit

will

not

make any voltage measurements although I can see

both

the

3458As

in

talk

states and, of course, it does sent the temperature

measurements.

However,

if I turn the HP unit off and then on again, the HP

will

start

to

take

voltage and temperature measurements and send them

to

the

PC.

Any ideas on what might be causing the strange

behavior?

Thanks,

Randy Evans


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and follow the instructions there.

Randy, Short of swapping out the A5 digital board I have no other ideas. If you don't have a NI or Agilent adapter, I am sure I can find a spare for you to test. There is a Service Note 3458A-13A that deals with GPIB communication failures. There is a test within the document to see if a shorting jumper needs to be installed. I can try reducing the code to something minimal for a quick test if you want. It will take some time in the morning. Todd On Sat, Dec 30, 2017 at 11:18 PM, Randy Evans <randyevans2688@gmail.com> wrote: > Todd, > > Same as before. Still not working. All it does is print out "HP3458A" on > the output console and then just sits there. > > Randy > > On Sat, Dec 30, 2017 at 7:43 PM, Todd Micallef <tmicallef@gmail.com> > wrote: > > > Randy, > > > > I just remembered that I changed the duration from 30 minutes to 2 > minutes > > to speed up the test. I forgot to change it back. > > > > Todd > > > > On Sat, Dec 30, 2017 at 10:27 PM, Todd Micallef <tmicallef@gmail.com> > > wrote: > > > > > Randy, > > > > > > I just sent it. I haven't modified Martin's code yet. That can be done > > > once you confirm it works for you. > > > > > > Todd > > > > > > On Sat, Dec 30, 2017 at 10:12 PM, randyevans2688 < > > randyevans2688@gmail.com > > > > wrote: > > > > > >> Todd, > > >> If you don't mind, just send the code directly to me. > > >> Randy > > >> > > >> Sent from my Verizon, Samsung Galaxy smartphone > > >> -------- Original message --------From: Todd Micallef < > > >> tmicallef@gmail.com> Date: 12/30/17 6:40 PM (GMT-08:00) To: > > Discussion > > >> of precise voltage measurement <volt-nuts@febo.com> Subject: Re: > > >> [volt-nuts] GPIB Issue with 3458A > > >> Randy, > > >> > > >> I have not written anything else for the 3458A using EzGPIB. If you > > have > > >> a > > >> National Instruments or Agilent adapters, I have a handful of Python > > code > > >> I > > >> use to measure some of my standards. > > >> > > >> If you are reading the temperature from the HP meter, I would think > that > > >> the problem lies in how the triggering is configured. The triggering > has > > >> been changed in this script so it may work for you. There was an > > >> additional > > >> command added for disabling the buffer. > > >> The code can be posted here, if possible or I can email it to you for > > >> testing. > > >> > > >> Todd > > >> > > >> On Sat, Dec 30, 2017 at 9:26 PM, randyevans2688 < > > randyevans2688@gmail.com > > >> > > > >> wrote: > > >> > > >> > Todd, thanks for the help. Where will you post the new code? > > >> > BTW, do you have any very simple code that is likely to work. I am > > >> > interested in seeing if anything other than KE5FX's memory dump > > program > > >> > will work on my HP3458A. > > >> > Thanks again, > > >> > Randy > > >> > > > >> > Sent from my Verizon, Samsung Galaxy smartphone > > >> > -------- Original message --------From: Todd Micallef < > > >> tmicallef@gmail.com> > > >> > Date: 12/30/17 6:13 PM (GMT-08:00) To: Discussion of precise > voltage > > >> > measurement <volt-nuts@febo.com> Subject: Re: [volt-nuts] GPIB > Issue > > >> with > > >> > 3458A > > >> > Randy, > > >> > > > >> > I found the Prologix adapters and have modified the code in the > > original > > >> > script. I am doing a test run now and will post the script when I am > > >> > certain I didn't make it worse. > > >> > > > >> > Todd > > >> > > > >> > On Sat, Dec 30, 2017 at 7:15 PM, Randy Evans < > > randyevans2688@gmail.com> > > >> > wrote: > > >> > > > >> > > Todd, > > >> > > > > >> > > I have swapped cables, moved the Prologix adapter to both meters > > >> (Agilent > > >> > > works, HP doesn't), tried Martins code as well as Xdevs's. I have > > not > > >> > > tried another PC yet, maybe the next step. > > >> > > > > >> > > Here is the code that Martin modified for two meters, as well as > the > > >> > > modified Xdev's code per your directions (V1.02). > > >> > > > > >> > > Thanks, > > >> > > > > >> > > Randy > > >> > > > > >> > > On Sat, Dec 30, 2017 at 3:55 PM, Todd Micallef < > tmicallef@gmail.com > > > > > >> > > wrote: > > >> > > > > >> > > > Randy, > > >> > > > > > >> > > > I will continue to look for my adapter. I haven't used it for > > quite > > >> a > > >> > > > while. > > >> > > > > > >> > > > I have seen similar issues and swapped cables, moved the adapter > > to > > >> the > > >> > > > other meter, etc... One of my cables was bad from one side of > the > > >> > > connector > > >> > > > to the other (on the same end of the cable) and caused me lots > of > > >> > wasted > > >> > > > time. Weird reading errors were happening. > > >> > > > > > >> > > > Would you email me Martin's code so I can test it here and I > will > > >> see > > >> > if > > >> > > > anything can be done to replicate your issue. > > >> > > > > > >> > > > Todd > > >> > > > > > >> > > > > > >> > > > On Sat, Dec 30, 2017 at 6:42 PM, Randy Evans < > > >> randyevans2688@gmail.com > > >> > > > > >> > > > wrote: > > >> > > > > > >> > > > > Todd, > > >> > > > > > > >> > > > > I tried adding the line but it made no difference. > > >> > > > > > > >> > > > > Randy > > >> > > > > > > >> > > > > On Sat, Dec 30, 2017 at 12:19 PM, Randy Evans < > > >> > > randyevans2688@gmail.com> > > >> > > > > wrote: > > >> > > > > > > >> > > > > > Todd, > > >> > > > > > > > >> > > > > > Does it matter where I put the line in the Init_Device > > >> procedure? > > >> > > > > > > > >> > > > > > > > >> > > > > > procedure Init_Device; > > >> > > > > > begin; > > >> > > > > > EZGPIB_BusWriteData(gpib_address,GET_ID); // > > Get > > >> ID > > >> > of > > >> > > > > meter > > >> > > > > > if EZGPIB_BusWaitForData(gpib_address,meter_id,Timeout) > > then > > >> > > > > > EZGPIB_ScreenWriteLn(meter_id); > > >> > > > > > > > >> > > > > > EZGPIB_BusWriteData(gpib_address,TRIGGER_SOURCE); // > > Hold > > >> > > > trigger > > >> > > > > > until meter can be setup > > >> > > > > > EZGPIB_BusWriteData(gpib_address,'INBUF ON'); > > >> > > > > > EZGPIB_BusWriteData(gpib_address,AUTO_ZERO); > > >> > > > > > EZGPIB_BusWriteData(gpib_address,OUTPUT_FORMAT); > > >> > > > > > end; > > >> > > > > > > > >> > > > > > > > >> > > > > > Randy > > >> > > > > > > > >> > > > > > On Sat, Dec 30, 2017 at 11:20 AM, Todd Micallef < > > >> > tmicallef@gmail.com > > >> > > > > > >> > > > > > wrote: > > >> > > > > > > > >> > > > > >> Randy, > > >> > > > > >> > > >> > > > > >> I am the person that wrote that EzGPIB script. It was my > > first > > >> > > before > > >> > > > I > > >> > > > > >> moved on to Python and I have only written a couple for the > > >> > > different > > >> > > > > >> meters I have on hand. Version 1.01 is the most current > > >> version I > > >> > > have > > >> > > > > for > > >> > > > > >> the 3458A. > > >> > > > > >> I see that I should have added at least one more command to > > the > > >> > > meter > > >> > > > > >> initialization. The additional init command is used in the > > >> > scripts > > >> > > on > > >> > > > > >> xDevs. > > >> > > > > >> > > >> > > > > >> Add the following line in the Init_Device procedure > > >> > > > > >> EZGPIB_BusWriteData(gpib_address,'END ALWAYS'); > > >> > > > > >> > > >> > > > > >> This tells the meter to send an EOI on every read. > > >> > > > > >> > > >> > > > > >> I am looking for one of my Prologix adapters or I would > test > > >> this. > > >> > > > When > > >> > > > > I > > >> > > > > >> find it, I will also test it. I want to make sure there are > > no > > >> > > further > > >> > > > > >> issues. > > >> > > > > >> Also, do both meters run the same firmware versions? I > wonder > > >> if > > >> > the > > >> > > > HP > > >> > > > > >> meter is using a much older version. > > >> > > > > >> > > >> > > > > >> Todd > > >> > > > > >> > > >> > > > > >> On Sat, Dec 30, 2017 at 10:42 AM, Randy Evans < > > >> > > > randyevans2688@gmail.com > > >> > > > > > > > >> > > > > >> wrote: > > >> > > > > >> > > >> > > > > >> > Todd, > > >> > > > > >> > > > >> > > > > >> > I have version 1.01. Yes, please e-mail me your modified > > >> > version. > > >> > > > > >> Maybe it > > >> > > > > >> > will help. > > >> > > > > >> > > > >> > > > > >> > Thanks, > > >> > > > > >> > > > >> > > > > >> > Randy > > >> > > > > >> > > > >> > > > > >> > On Sat, Dec 30, 2017 at 4:24 AM, Todd Micallef < > > >> > > tmicallef@gmail.com > > >> > > > > > > >> > > > > >> > wrote: > > >> > > > > >> > > > >> > > > > >> > > Randy, > > >> > > > > >> > > > > >> > > > > >> > > Is there a version number at the top of the file? I had > > two > > >> > > > versions > > >> > > > > >> > (1.00 > > >> > > > > >> > > and 1.01). I can't remember all that changed between > the > > >> two > > >> > > since > > >> > > > > it > > >> > > > > >> has > > >> > > > > >> > > been a while but I did find an additional timeout code > > that > > >> > > > limited > > >> > > > > >> the > > >> > > > > >> > > wait time for reading data to 1 minute. I am guessing I > > >> had a > > >> > > > > problem > > >> > > > > >> > with > > >> > > > > >> > > mine and added it. > > >> > > > > >> > > > > >> > > > > >> > > I can email it to you if you want to try it. If it > works > > >> for > > >> > > you, > > >> > > > I > > >> > > > > >> will > > >> > > > > >> > > have Illya update it on xDevs. > > >> > > > > >> > > > > >> > > > > >> > > Todd > > >> > > > > >> > > > > >> > > > > >> > > On Sat, Dec 30, 2017 at 12:39 AM, Randy Evans < > > >> > > > > >> randyevans2688@gmail.com> > > >> > > > > >> > > wrote: > > >> > > > > >> > > > > >> > > > > >> > > > I am still unable to get my HP-3458A to work with the > > >> xdevs > > >> > > > > program > > >> > > > > >> > > > "HP3458A_Measure_DMM_Noise.488" ( > > >> > > https://xdevs.com/article/dmm > > >> > > > > >> _noise/ > > >> > > > > >> > ). > > >> > > > > >> > > > It > > >> > > > > >> > > > works fine with my Agilent 3458A and with a friend's > > >> > HP-3458A > > >> > > > and > > >> > > > > >> his > > >> > > > > >> > > > Agilent 3458A using the EZGPIB program. The SW > > versions > > >> are > > >> > > > > >> identical > > >> > > > > >> > > with > > >> > > > > >> > > > my friend's DMMs, the HP units are (8.2) and with the > > >> > Agilent > > >> > > > > units > > >> > > > > >> are > > >> > > > > >> > > > (9.2). However, both of my units work fine with the > > >> KE5FX > > >> > > GPIB > > >> > > > > >> Toolkit > > >> > > > > >> > > > HP3458.EXE program to download the NVRAM CAL data. > > This > > >> > would > > >> > > > > seem > > >> > > > > >> to > > >> > > > > >> > > > indicate that my HP-3458 GPIB works at least > partially. > > >> > > > > >> > > > > > >> > > > > >> > > > Does anyone have a EZGPIB program that I could try to > > run > > >> > > (that > > >> > > > is > > >> > > > > >> > > > different from the Xdev program)? It would be nice > to > > >> see > > >> > if > > >> > > I > > >> > > > > >> could > > >> > > > > >> > get > > >> > > > > >> > > > something to work other than the HP3458.EXE program. > > Or > > >> if > > >> > > any > > >> > > > > one > > >> > > > > >> has > > >> > > > > >> > > > some ideas on what to look for. > > >> > > > > >> > > > > > >> > > > > >> > > > Thanks, > > >> > > > > >> > > > > > >> > > > > >> > > > Randy Evans > > >> > > > > >> > > > > > >> > > > > >> > > > On Tue, Dec 26, 2017 at 7:24 PM, Randy Evans < > > >> > > > > >> randyevans2688@gmail.com > > >> > > > > >> > > > > >> > > > > >> > > > wrote: > > >> > > > > >> > > > > > >> > > > > >> > > > > I am hoping some of you experts might be able to > > assist > > >> > > with a > > >> > > > > >> > strange > > >> > > > > >> > > > > problem i am having trying to make automated > > >> measurements > > >> > > > using > > >> > > > > >> > EZGPIB > > >> > > > > >> > > > with > > >> > > > > >> > > > > an Agilent and an HP 3458A. I have a program given > > to > > >> me > > >> > by > > >> > > > > >> Martin > > >> > > > > >> > > > > Reynolds, which is a variant on the Xdevs noise > > >> > measurement > > >> > > > > >> program. > > >> > > > > >> > > > > Martin's program continuously reads the voltage > > >> > measurements > > >> > > > > >> > > sequentially > > >> > > > > >> > > > > from the two meters and then stores then in a > > >> measurements > > >> > > > file, > > >> > > > > >> > along > > >> > > > > >> > > > with > > >> > > > > >> > > > > the temperature measurements from both meters. The > > >> > program > > >> > > > > works > > >> > > > > >> > fine > > >> > > > > >> > > on > > >> > > > > >> > > > > his Agilent and HP 3458As. > > >> > > > > >> > > > > > > >> > > > > >> > > > > On my two 3458As, it takes the temperature > > measurements > > >> > just > > >> > > > > fine > > >> > > > > >> but > > >> > > > > >> > > > only > > >> > > > > >> > > > > takes a voltage measurement from the Agilent unit. > > >> The HP > > >> > > > unit > > >> > > > > >> will > > >> > > > > >> > > not > > >> > > > > >> > > > > make any voltage measurements although I can see > both > > >> the > > >> > > > 3458As > > >> > > > > >> in > > >> > > > > >> > > talk > > >> > > > > >> > > > > states and, of course, it does sent the temperature > > >> > > > > measurements. > > >> > > > > >> > > > However, > > >> > > > > >> > > > > if I turn the HP unit off and then on again, the HP > > >> will > > >> > > start > > >> > > > > to > > >> > > > > >> > take > > >> > > > > >> > > > > voltage and temperature measurements and send them > to > > >> the > > >> > > PC. > > >> > > > > >> > > > > > > >> > > > > >> > > > > Any ideas on what might be causing the strange > > >> behavior? > > >> > > > > >> > > > > > > >> > > > > >> > > > > Thanks, > > >> > > > > >> > > > > > > >> > > > > >> > > > > Randy Evans > > >> > > > > >> > > > > > > >> > > > > >> > > > _______________________________________________ > > >> > > > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > > >> > > > mailman/listinfo/volt-nuts > > >> > > > > >> > > > and follow the instructions there. > > >> > > > > >> > > > > > >> > > > > >> > > _______________________________________________ > > >> > > > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > > >> > > mailman/listinfo/volt-nuts > > >> > > > > >> > > and follow the instructions there. > > >> > > > > >> > > > > >> > > > > >> > _______________________________________________ > > >> > > > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > > >> > mailman/listinfo/volt-nuts > > >> > > > > >> > and follow the instructions there. > > >> > > > > >> > > > >> > > > > >> _______________________________________________ > > >> > > > > >> volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > >> > > > > >> ailman/listinfo/volt-nuts > > >> > > > > >> and follow the instructions there. > > >> > > > > >> > > >> > > > > > > > >> > > > > > > > >> > > > > _______________________________________________ > > >> > > > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > > mailman/listinfo/volt-nuts > > >> > > > > and follow the instructions there. > > >> > > > > > > >> > > > _______________________________________________ > > >> > > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > > mailman/listinfo/volt-nuts > > >> > > > and follow the instructions there. > > >> > > > > > >> > > > > >> > > _______________________________________________ > > >> > > volt-nuts mailing list -- volt-nuts@febo.com > > >> > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > > mailman/listinfo/volt-nuts > > >> > > and follow the instructions there. > > >> > > > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > mailman/listinfo/volt-nuts > > >> > and follow the instructions there. > > >> > _______________________________________________ > > >> > volt-nuts mailing list -- volt-nuts@febo.com > > >> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > >> > mailman/listinfo/volt-nuts > > >> > and follow the instructions there. > > >> > > > >> _______________________________________________ > > >> volt-nuts mailing list -- volt-nuts@febo.com > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > >> ailman/listinfo/volt-nuts > > >> and follow the instructions there. > > >> _______________________________________________ > > >> volt-nuts mailing list -- volt-nuts@febo.com > > >> To unsubscribe, go to https://www.febo.com/cgi-bin/m > > >> ailman/listinfo/volt-nuts > > >> and follow the instructions there. > > >> > > > > > > > > _______________________________________________ > > volt-nuts mailing list -- volt-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > > mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/volt-nuts > and follow the instructions there. >