Empathy List Archives

SR

Stéphane Rey

Wed, Jun 29, 2016 2:32 PM

Hello there,

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued. What
model still distributed would you think is good for that at the moment
?

Thanks & cheers
Stephane

Hello there, I'm planning to buy a such instrument in order to do some frequency stability measurement at work. The SR620 seems to be discontinued. What model still distributed would you think is good for that at the moment ? Thanks & cheers Stephane

AK

Attila Kinali

Wed, Jun 29, 2016 4:55 PM

On Wed, 29 Jun 2016 14:32:07 +0000
Stéphane Rey steph.rey@wanadoo.fr wrote:

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued. What
model still distributed would you think is good for that at the moment
?

The SR620 is still being sold: http://thinksrs.com/products/SR620.htm

What kind of device you want to get highly depends on your requirements.
Without knowing them, it's impossible to give good advice.

		Attila Kinali

--
Malek's Law:
Any simple idea will be worded in the most complicated way.

On Wed, 29 Jun 2016 14:32:07 +0000 Stéphane Rey <steph.rey@wanadoo.fr> wrote: > I'm planning to buy a such instrument in order to do some frequency > stability measurement at work. The SR620 seems to be discontinued. What > model still distributed would you think is good for that at the moment > ? The SR620 is still being sold: http://thinksrs.com/products/SR620.htm What kind of device you want to get highly depends on your requirements. Without knowing them, it's impossible to give good advice. Attila Kinali -- Malek's Law: Any simple idea will be worded in the most complicated way.

BC

Brooke Clarke

Wed, Jun 29, 2016 5:20 PM

Hi Stephane:

I traded my HP 53132A counter for an SR 620. The 53132 has what I'd call a user hostile interface, so if you are
manually controlling the counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across the room.

PS Stanford Research is a company founded by physicists and makes some really high quality stuff. In fact some of the
products HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

The claim to fame for the HP 53132A is that it can make a frequency (not time interval) measurement to 1E12 in a
second. Here's how to get that same result with the SR620:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

On the down side the printing functions on the 620 require an Epsom printer. Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading stability for aging as well as the EFC tuning
polarity and range so as to match other OCXOs.
http://prc68.com/I/TandFTE.shtml#SC10

At one point they were looking into making a GPS time receiver where the cable length calibration would be built-in.

--
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.

-------- Original Message --------

Hello there,

I'm planning to buy a such instrument in order to do some frequency stability measurement at work. The SR620 seems to
be discontinued. What model still distributed would you think is good for that at the moment ?

Thanks & cheers
Stephane

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

Hi Stephane: I traded my HP 53132A counter for an SR 620. The 53132 has what I'd call a user hostile interface, so if you are manually controlling the counter the SR 620 has a huge advantage. I also like the long display on the 620 which can be read from across the room. PS Stanford Research is a company founded by physicists and makes some really high quality stuff. In fact some of the products HP/Agilent/Keysight sells are repackaged SR instruments. http://www.prc68.com/I/TandFTE.shtml#SR620 The claim to fame for the HP 53132A is that it can make a frequency (not time interval) measurement to 1E12 in a second. Here's how to get that same result with the SR620: http://www.prc68.com/I/FTS4060.shtml#SR620Fast On the down side the printing functions on the 620 require an Epsom printer. Does anyone have a solution for that? PS SR also makes a 10 MHz crystal oscillator that has options trading stability for aging as well as the EFC tuning polarity and range so as to match other OCXOs. http://prc68.com/I/TandFTE.shtml#SC10 At one point they were looking into making a GPS time receiver where the cable length calibration would be built-in. -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/2012Issues.html The lesser of evils is still evil. -------- Original Message -------- > Hello there, > > I'm planning to buy a such instrument in order to do some frequency stability measurement at work. The SR620 seems to > be discontinued. What model still distributed would you think is good for that at the moment ? > > Thanks & cheers > Stephane > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >

SR

Stéphane Rey

Wed, Jun 29, 2016 8:02 PM

I will try to buy one of these SR620. I've some Standford & Research
products like the 535 or the 30 MHz DDS generator. I do admit I'm not
fan of the front panel interface as well but this is ok and usable. The
SR620 would probably be PC controlled anyway to automate some
measurements.
The 10 MHz reference will come from a GPSDO which is broadcasted over
optical fibers. However the optical SFPs have been tested to have 500fs
RMS jitter which mich be pretty high for that.
I've a Thunderbolt GPSDO sleeping in a box that will do the job
otherwise. I plan to buy a Rb oscillator for reference for DTMD method
and design a small circuit for the downmixing.
To be continued.
Thanks for the comments
Stephane

------ Message d'origine ------
De : "Brooke Clarke" brooke@pacific.net
À : "Stéphane Rey" steph.rey@wanadoo.fr; "Discussion of precise time
and frequency measurement" time-nuts@febo.com
Envoyé 29/06/2016 19:20:22
Objet : Re: [time-nuts] buying a time interval counter

Hi Stephane:

I traded my HP 53132A counter for an SR 620. The 53132 has what I'd
call a user hostile interface, so if you are manually controlling the
counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across
the room.

PS Stanford Research is a company founded by physicists and makes some
really high quality stuff. In fact some of the products
HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

The claim to fame for the HP 53132A is that it can make a frequency
(not time interval) measurement to 1E12 in a second. Here's how to get
that same result with the SR620:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

On the down side the printing functions on the 620 require an Epsom
printer. Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading
stability for aging as well as the EFC tuning polarity and range so as
to match other OCXOs.
http://prc68.com/I/TandFTE.shtml#SC10

At one point they were looking into making a GPS time receiver where
the cable length calibration would be built-in.

-- Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.

-------- Original Message --------

Hello there,

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued.
What model still distributed would you think is good for that at the
moment ?

Thanks & cheers
Stephane

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

L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast.
https://www.avast.com/antivirus

I will try to buy one of these SR620. I've some Standford & Research products like the 535 or the 30 MHz DDS generator. I do admit I'm not fan of the front panel interface as well but this is ok and usable. The SR620 would probably be PC controlled anyway to automate some measurements. The 10 MHz reference will come from a GPSDO which is broadcasted over optical fibers. However the optical SFPs have been tested to have 500fs RMS jitter which mich be pretty high for that. I've a Thunderbolt GPSDO sleeping in a box that will do the job otherwise. I plan to buy a Rb oscillator for reference for DTMD method and design a small circuit for the downmixing. To be continued. Thanks for the comments Stephane ------ Message d'origine ------ De : "Brooke Clarke" <brooke@pacific.net> À : "Stéphane Rey" <steph.rey@wanadoo.fr>; "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Envoyé 29/06/2016 19:20:22 Objet : Re: [time-nuts] buying a time interval counter >Hi Stephane: > >I traded my HP 53132A counter for an SR 620. The 53132 has what I'd >call a user hostile interface, so if you are manually controlling the >counter the SR 620 has a huge advantage. >I also like the long display on the 620 which can be read from across >the room. > >PS Stanford Research is a company founded by physicists and makes some >really high quality stuff. In fact some of the products >HP/Agilent/Keysight sells are repackaged SR instruments. >http://www.prc68.com/I/TandFTE.shtml#SR620 > >The claim to fame for the HP 53132A is that it can make a frequency >(not time interval) measurement to 1E12 in a second. Here's how to get >that same result with the SR620: >http://www.prc68.com/I/FTS4060.shtml#SR620Fast > >On the down side the printing functions on the 620 require an Epsom >printer. Does anyone have a solution for that? > >PS SR also makes a 10 MHz crystal oscillator that has options trading >stability for aging as well as the EFC tuning polarity and range so as >to match other OCXOs. >http://prc68.com/I/TandFTE.shtml#SC10 > >At one point they were looking into making a GPS time receiver where >the cable length calibration would be built-in. > >-- Have Fun, > >Brooke Clarke >http://www.PRC68.com >http://www.end2partygovernment.com/2012Issues.html >The lesser of evils is still evil. > >-------- Original Message -------- >>Hello there, >> >>I'm planning to buy a such instrument in order to do some frequency >>stability measurement at work. The SR620 seems to be discontinued. >>What model still distributed would you think is good for that at the >>moment ? >> >>Thanks & cheers >>Stephane >>_______________________________________________ >>time-nuts mailing list -- time-nuts@febo.com >>To unsubscribe, go to >>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>and follow the instructions there. >> > --- L'absence de virus dans ce courrier électronique a été vérifiée par le logiciel antivirus Avast. https://www.avast.com/antivirus

R(

Richard (Rick) Karlquist

Thu, Jun 30, 2016 12:09 AM

On 6/29/2016 10:20 AM, Brooke Clarke wrote:

PS Stanford Research is a company founded by physicists and makes some
really high quality stuff. In fact some of the products
HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

In the old days, HP/Agilent made microwave frequency counters.
One of the main competitors was EIP, which was located a few
miles away. A key R&D manager defected to EIP and eventually
Agilent stopped making microwave counters and instead resold
EIP counters. I'm not surprised to hear the same thing is
going on with SRS, also a few miles away.

Rick

On 6/29/2016 10:20 AM, Brooke Clarke wrote: > PS Stanford Research is a company founded by physicists and makes some > really high quality stuff. In fact some of the products > HP/Agilent/Keysight sells are repackaged SR instruments. > http://www.prc68.com/I/TandFTE.shtml#SR620 > In the old days, HP/Agilent made microwave frequency counters. One of the main competitors was EIP, which was located a few miles away. A key R&D manager defected to EIP and eventually Agilent stopped making microwave counters and instead resold EIP counters. I'm not surprised to hear the same thing is going on with SRS, also a few miles away. Rick

SR

Stéphane Rey

Thu, Jun 30, 2016 2:07 PM

Hi,
I've ordered a SR620 with the option 01 (higher stability standard)
Should be there in August
Thanks
Stephane

------ Message d'origine ------
De : "Brooke Clarke" brooke@pacific.net
À : "Stéphane Rey" steph.rey@wanadoo.fr; "Discussion of precise time
and frequency measurement" time-nuts@febo.com
Envoyé 29/06/2016 19:20:22
Objet : Re: [time-nuts] buying a time interval counter

Hi Stephane:

I traded my HP 53132A counter for an SR 620. The 53132 has what I'd
call a user hostile interface, so if you are manually controlling the
counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across
the room.

PS Stanford Research is a company founded by physicists and makes some
really high quality stuff. In fact some of the products
HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

The claim to fame for the HP 53132A is that it can make a frequency
(not time interval) measurement to 1E12 in a second. Here's how to get
that same result with the SR620:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

On the down side the printing functions on the 620 require an Epsom
printer. Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading
stability for aging as well as the EFC tuning polarity and range so as
to match other OCXOs.
http://prc68.com/I/TandFTE.shtml#SC10

At one point they were looking into making a GPS time receiver where
the cable length calibration would be built-in.

-- Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.

-------- Original Message --------

Hello there,

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued.
What model still distributed would you think is good for that at the
moment ?

Thanks & cheers
Stephane

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

Hi, I've ordered a SR620 with the option 01 (higher stability standard) Should be there in August Thanks Stephane ------ Message d'origine ------ De : "Brooke Clarke" <brooke@pacific.net> À : "Stéphane Rey" <steph.rey@wanadoo.fr>; "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Envoyé 29/06/2016 19:20:22 Objet : Re: [time-nuts] buying a time interval counter >Hi Stephane: > >I traded my HP 53132A counter for an SR 620. The 53132 has what I'd >call a user hostile interface, so if you are manually controlling the >counter the SR 620 has a huge advantage. >I also like the long display on the 620 which can be read from across >the room. > >PS Stanford Research is a company founded by physicists and makes some >really high quality stuff. In fact some of the products >HP/Agilent/Keysight sells are repackaged SR instruments. >http://www.prc68.com/I/TandFTE.shtml#SR620 > >The claim to fame for the HP 53132A is that it can make a frequency >(not time interval) measurement to 1E12 in a second. Here's how to get >that same result with the SR620: >http://www.prc68.com/I/FTS4060.shtml#SR620Fast > >On the down side the printing functions on the 620 require an Epsom >printer. Does anyone have a solution for that? > >PS SR also makes a 10 MHz crystal oscillator that has options trading >stability for aging as well as the EFC tuning polarity and range so as >to match other OCXOs. >http://prc68.com/I/TandFTE.shtml#SC10 > >At one point they were looking into making a GPS time receiver where >the cable length calibration would be built-in. > >-- Have Fun, > >Brooke Clarke >http://www.PRC68.com >http://www.end2partygovernment.com/2012Issues.html >The lesser of evils is still evil. > >-------- Original Message -------- >>Hello there, >> >>I'm planning to buy a such instrument in order to do some frequency >>stability measurement at work. The SR620 seems to be discontinued. >>What model still distributed would you think is good for that at the >>moment ? >> >>Thanks & cheers >>Stephane >>_______________________________________________ >>time-nuts mailing list -- time-nuts@febo.com >>To unsubscribe, go to >>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>and follow the instructions there. >> >

J

Jerry

Thu, Jun 30, 2016 3:01 PM

How does the Fluke PM6690 (same as Pendulum CNT-90) compare to the SR620? A neighbor is selling one in perfect condition (per him) for $900

Jerry
NY2KW

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Stéphane Rey
Sent: Thursday, June 30, 2016 10:07 AM
To: Brooke Clarke; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] buying a time interval counter

Hi,
I've ordered a SR620 with the option 01 (higher stability standard) Should be there in August Thanks Stephane

------ Message d'origine ------
De : "Brooke Clarke" brooke@pacific.net À : "Stéphane Rey" steph.rey@wanadoo.fr; "Discussion of precise time and frequency measurement" time-nuts@febo.com Envoyé 29/06/2016 19:20:22 Objet : Re: [time-nuts] buying a time interval counter

Hi Stephane:

I traded my HP 53132A counter for an SR 620. The 53132 has what I'd
call a user hostile interface, so if you are manually controlling the
counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across
the room.

PS Stanford Research is a company founded by physicists and makes some
really high quality stuff. In fact some of the products
HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

The claim to fame for the HP 53132A is that it can make a frequency
(not time interval) measurement to 1E12 in a second. Here's how to get
that same result with the SR620:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

On the down side the printing functions on the 620 require an Epsom
printer. Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading
stability for aging as well as the EFC tuning polarity and range so as
to match other OCXOs.
http://prc68.com/I/TandFTE.shtml#SC10

At one point they were looking into making a GPS time receiver where
the cable length calibration would be built-in.

-- Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.

-------- Original Message --------

Hello there,

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued.
What model still distributed would you think is good for that at the
moment ?

Thanks & cheers
Stephane

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

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

How does the Fluke PM6690 (same as Pendulum CNT-90) compare to the SR620? A neighbor is selling one in perfect condition (per him) for $900 Jerry NY2KW -----Original Message----- From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of Stéphane Rey Sent: Thursday, June 30, 2016 10:07 AM To: Brooke Clarke; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] buying a time interval counter Hi, I've ordered a SR620 with the option 01 (higher stability standard) Should be there in August Thanks Stephane ------ Message d'origine ------ De : "Brooke Clarke" <brooke@pacific.net> À : "Stéphane Rey" <steph.rey@wanadoo.fr>; "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Envoyé 29/06/2016 19:20:22 Objet : Re: [time-nuts] buying a time interval counter >Hi Stephane: > >I traded my HP 53132A counter for an SR 620. The 53132 has what I'd >call a user hostile interface, so if you are manually controlling the >counter the SR 620 has a huge advantage. >I also like the long display on the 620 which can be read from across >the room. > >PS Stanford Research is a company founded by physicists and makes some >really high quality stuff. In fact some of the products >HP/Agilent/Keysight sells are repackaged SR instruments. >http://www.prc68.com/I/TandFTE.shtml#SR620 > >The claim to fame for the HP 53132A is that it can make a frequency >(not time interval) measurement to 1E12 in a second. Here's how to get >that same result with the SR620: >http://www.prc68.com/I/FTS4060.shtml#SR620Fast > >On the down side the printing functions on the 620 require an Epsom >printer. Does anyone have a solution for that? > >PS SR also makes a 10 MHz crystal oscillator that has options trading >stability for aging as well as the EFC tuning polarity and range so as >to match other OCXOs. >http://prc68.com/I/TandFTE.shtml#SC10 > >At one point they were looking into making a GPS time receiver where >the cable length calibration would be built-in. > >-- Have Fun, > >Brooke Clarke >http://www.PRC68.com >http://www.end2partygovernment.com/2012Issues.html >The lesser of evils is still evil. > >-------- Original Message -------- >>Hello there, >> >>I'm planning to buy a such instrument in order to do some frequency >>stability measurement at work. The SR620 seems to be discontinued. >>What model still distributed would you think is good for that at the >>moment ? >> >>Thanks & cheers >>Stephane >>_______________________________________________ >>time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to >>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>and follow the instructions there. >> > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

SR

Stéphane Rey

Thu, Jun 30, 2016 3:38 PM

Ji Jerry,
The Fluke exhibit a 100ps resolution whereas the SR620 has 25ps.
This is the main difference I see from datasheets.

cheers
Stephane

------ Message d'origine ------
De : "Jerry" jsternmd@att.net
À : "'Stéphane Rey'" steph.rey@wanadoo.fr; "'Discussion of precise
time and frequency measurement'" time-nuts@febo.com; "'Brooke Clarke'"
brooke@pacific.net
Envoyé 30/06/2016 17:01:50
Objet : RE: [time-nuts] buying a time interval counter

How does the Fluke PM6690 (same as Pendulum CNT-90) compare to the
SR620? A neighbor is selling one in perfect condition (per him) for
$900

Jerry
NY2KW

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of
Stéphane Rey
Sent: Thursday, June 30, 2016 10:07 AM
To: Brooke Clarke; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] buying a time interval counter

Hi,
I've ordered a SR620 with the option 01 (higher stability standard)
Should be there in August Thanks Stephane

------ Message d'origine ------
De : "Brooke Clarke" brooke@pacific.net À : "Stéphane Rey"
steph.rey@wanadoo.fr; "Discussion of precise time and frequency
measurement" time-nuts@febo.com Envoyé 29/06/2016 19:20:22 Objet :
Re: [time-nuts] buying a time interval counter

Hi Stephane:

I traded my HP 53132A counter for an SR 620. The 53132 has what I'd
call a user hostile interface, so if you are manually controlling the
counter the SR 620 has a huge advantage.
I also like the long display on the 620 which can be read from across
the room.

PS Stanford Research is a company founded by physicists and makes some
really high quality stuff. In fact some of the products
HP/Agilent/Keysight sells are repackaged SR instruments.
http://www.prc68.com/I/TandFTE.shtml#SR620

The claim to fame for the HP 53132A is that it can make a frequency
(not time interval) measurement to 1E12 in a second. Here's how to
get
that same result with the SR620:
http://www.prc68.com/I/FTS4060.shtml#SR620Fast

On the down side the printing functions on the 620 require an Epsom
printer. Does anyone have a solution for that?

PS SR also makes a 10 MHz crystal oscillator that has options trading
stability for aging as well as the EFC tuning polarity and range so as
to match other OCXOs.
http://prc68.com/I/TandFTE.shtml#SC10

At one point they were looking into making a GPS time receiver where
the cable length calibration would be built-in.

-- Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
The lesser of evils is still evil.

-------- Original Message --------

Hello there,

I'm planning to buy a such instrument in order to do some frequency
stability measurement at work. The SR620 seems to be discontinued.
What model still distributed would you think is good for that at the
moment ?

Thanks & cheers
Stephane

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

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
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Ji Jerry, The Fluke exhibit a 100ps resolution whereas the SR620 has 25ps. This is the main difference I see from datasheets. cheers Stephane ------ Message d'origine ------ De : "Jerry" <jsternmd@att.net> À : "'Stéphane Rey'" <steph.rey@wanadoo.fr>; "'Discussion of precise time and frequency measurement'" <time-nuts@febo.com>; "'Brooke Clarke'" <brooke@pacific.net> Envoyé 30/06/2016 17:01:50 Objet : RE: [time-nuts] buying a time interval counter >How does the Fluke PM6690 (same as Pendulum CNT-90) compare to the >SR620? A neighbor is selling one in perfect condition (per him) for >$900 > >Jerry >NY2KW > >-----Original Message----- >From: time-nuts [mailto:time-nuts-bounces@febo.com] On Behalf Of >Stéphane Rey >Sent: Thursday, June 30, 2016 10:07 AM >To: Brooke Clarke; Discussion of precise time and frequency measurement >Subject: Re: [time-nuts] buying a time interval counter > >Hi, >I've ordered a SR620 with the option 01 (higher stability standard) >Should be there in August Thanks Stephane > >------ Message d'origine ------ >De : "Brooke Clarke" <brooke@pacific.net> À : "Stéphane Rey" ><steph.rey@wanadoo.fr>; "Discussion of precise time and frequency >measurement" <time-nuts@febo.com> Envoyé 29/06/2016 19:20:22 Objet : >Re: [time-nuts] buying a time interval counter > >>Hi Stephane: >> >>I traded my HP 53132A counter for an SR 620. The 53132 has what I'd >>call a user hostile interface, so if you are manually controlling the >>counter the SR 620 has a huge advantage. >>I also like the long display on the 620 which can be read from across >>the room. >> >>PS Stanford Research is a company founded by physicists and makes some >>really high quality stuff. In fact some of the products >>HP/Agilent/Keysight sells are repackaged SR instruments. >>http://www.prc68.com/I/TandFTE.shtml#SR620 >> >>The claim to fame for the HP 53132A is that it can make a frequency >>(not time interval) measurement to 1E12 in a second. Here's how to >>get >>that same result with the SR620: >>http://www.prc68.com/I/FTS4060.shtml#SR620Fast >> >>On the down side the printing functions on the 620 require an Epsom >>printer. Does anyone have a solution for that? >> >>PS SR also makes a 10 MHz crystal oscillator that has options trading >>stability for aging as well as the EFC tuning polarity and range so as >>to match other OCXOs. >>http://prc68.com/I/TandFTE.shtml#SC10 >> >>At one point they were looking into making a GPS time receiver where >>the cable length calibration would be built-in. >> >>-- Have Fun, >> >>Brooke Clarke >>http://www.PRC68.com >>http://www.end2partygovernment.com/2012Issues.html >>The lesser of evils is still evil. >> >>-------- Original Message -------- >>>Hello there, >>> >>>I'm planning to buy a such instrument in order to do some frequency >>>stability measurement at work. The SR620 seems to be discontinued. >>>What model still distributed would you think is good for that at the >>>moment ? >>> >>>Thanks & cheers >>>Stephane >>>_______________________________________________ >>>time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to >>>https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>>and follow the instructions there. >>> >> > >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. >

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buying a time interval counter