Re: [time-nuts] time-nuts Digest, Vol 145, Issue 41/AUSTRON PHASE STEPPER MANUAL
I have a couple of AUSTON 2055 PHASE MICROSTEPPER UNITS and I have a soft copy of the manual, but I will have to locate the CD where I have it stored. Please contact me off list if desired.
v/r
Cary
Cary Williamson
General Dynamics IT
700 Independence Pkwy Suite 100
Chesapeake, VA 23320-5184
Office phone (757) 389-4846
Cell phone (757) 373-7252
From: time-nuts time-nuts-bounces+cary.williamson=gdit.com@febo.com on behalf of time-nuts-request@febo.com time-nuts-request@febo.com
Sent: Sunday, August 21, 2016 12:00 PM
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Subject: time-nuts Digest, Vol 145, Issue 41
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Today's Topics:
- Austron Phase Stepper Manual needed (g4gjl@btopenworld.com)
- DIY VNA design (Attila Kinali)
- Re: DIY VNA design (Richard (Rick) Karlquist)
- Re: DIY VNA design (Bob Albert)
- Re: DIY VNA design (Orin Eman)
- Re: DIY VNA design (Bob Albert)
- Re: DIY VNA design (David J Taylor)
- Re: DIY VNA design (Attila Kinali)
Message: 1
Date: Sat, 20 Aug 2016 17:25:00 +0000 (UTC)
From: g4gjl@btopenworld.com
To: "time-nuts@febo.com" time-nuts@febo.com
Subject: [time-nuts] Austron Phase Stepper Manual needed
Message-ID:
1438814795.28709791.1471713900454.JavaMail.yahoo@mail.yahoo.com
Content-Type: text/plain; charset=UTF-8
Has anyone here got a copy of the manual for the Austron 2055 Phase stepper that I could borrow, beg, rent etc?
Reasonable price paid.
PeteG4GJL
Message: 2
Date: Sun, 21 Aug 2016 04:19:07 +0200
From: Attila Kinali attila@kinali.ch
To: time-nuts@febo.com
Subject: [time-nuts] DIY VNA design
Message-ID: 20160821041907.c71d241bf7384296124be5fb@kinali.ch
Content-Type: text/plain; charset=US-ASCII
Moin,
I stumbled over a new open hardware/source VNA design:
http://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-network-analyzer.html
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
performance.
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
Message: 3
Date: Sat, 20 Aug 2016 20:43:39 -0700
From: "Richard (Rick) Karlquist" richard@karlquist.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID: e756245e-fea4-d695-ae0f-4246f06a0e39@karlquist.com
Content-Type: text/plain; charset=utf-8; format=flowed
Another great posting, Attila.
When I was with Agilent, we looked at all kinds of
simplified network analyzer architectures, and I
would have to say the author is really well informed.
One issue he doesn't seem to be aware of is that the
ADL5801, when driven single ended, has some quirks
below 100 MHz that I discovered experimentally.
(The data sheet is silent on this). IMHO, it
would be worth 7 Euro's to use a balun, however,
I would like to know the part number of this
supposed component. I am not so sure about MCL
actually covering 30 MHz to 6 GHz in the same
balun. Sometimes their advertising is confusing,
and when they say .03-6 GHz baluns, they mean
that the range can be covered in several bands
by several model numbers.
Still, quite impressive work by an individual
practitioner.
Rick
On 8/20/2016 7:19 PM, Attila Kinali wrote:
Moin,
I stumbled over a new open hardware/source VNA design:
http://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-network-analyzer.html
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
performance.
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Attila Kinali
Message: 4
Date: Sun, 21 Aug 2016 04:46:10 +0000 (UTC)
From: Bob Albert bob91343@yahoo.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID: 192026759.433010.1471754770843@mail.yahoo.com
Content-Type: text/plain; charset=UTF-8
I was interested in this, but my needs are mostly below 100 MHz. I wonder what could be done similarly for this lower range...
Bob
On Saturday, August 20, 2016 8:54 PM, Richard (Rick) Karlquist <richard@karlquist.com> wrote:
Another great posting, Attila.
When I was with Agilent, we looked at all kinds of
simplified network analyzer architectures, and I
would have to say the author is really well informed.
One issue he doesn't seem to be aware of is that the
ADL5801, when driven single ended, has some quirks
below 100 MHz that I discovered experimentally.
(The data sheet is silent on this). IMHO, it
would be worth 7 Euro's to use a balun, however,
I would like to know the part number of this
supposed component. I am not so sure about MCL
actually covering 30 MHz to 6 GHz in the same
balun. Sometimes their advertising is confusing,
and when they say .03-6 GHz baluns, they mean
that the range can be covered in several bands
by several model numbers.
Still, quite impressive work by an individual
practitioner.
Rick
On 8/20/2016 7:19 PM, Attila Kinali wrote:
Moin,
I stumbled over a new open hardware/source VNA design:
http://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-network-analyzer.html
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
performance.
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Attila Kinali
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.
Message: 5
Date: Sat, 20 Aug 2016 22:45:58 -0700
From: Orin Eman orin.eman@gmail.com
To: Bob Albert bob91343@yahoo.com, Discussion of precise time and
frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID:
CAPjY7U_NMzKQwZpjbjNmeoLod29q6NXBqpMr+f45D+zFDycHJg@mail.gmail.com
Content-Type: text/plain; charset=UTF-8
To 60MHz: http://n2pk.com; PCBs available here:
http://www.makarov.ca/vna.htm
To 500MHz, lower dynamic range to 1.3GHz:
http://sdr-kits.net/VNWA3_Description.html
OK, so the latter isn't build it yourself anymore.
I have version 2.6 of the latter and it works really well to about 575MHz.
Traces can get noisy after about 575MHz.
Remember these VNAs are only as good as the calibration kit you use with
them!
Orin.
On Sat, Aug 20, 2016 at 9:46 PM, Bob Albert via time-nuts <
time-nuts@febo.com> wrote:
I was interested in this, but my needs are mostly below 100 MHz. I wonder
what could be done similarly for this lower range...
Bob
On Saturday, August 20, 2016 8:54 PM, Richard (Rick) Karlquist <
richard@karlquist.com> wrote:
Another great posting, Attila.
When I was with Agilent, we looked at all kinds of
simplified network analyzer architectures, and I
would have to say the author is really well informed.
One issue he doesn't seem to be aware of is that the
ADL5801, when driven single ended, has some quirks
below 100 MHz that I discovered experimentally.
(The data sheet is silent on this). IMHO, it
would be worth 7 Euro's to use a balun, however,
I would like to know the part number of this
supposed component. I am not so sure about MCL
actually covering 30 MHz to 6 GHz in the same
balun. Sometimes their advertising is confusing,
and when they say .03-6 GHz baluns, they mean
that the range can be covered in several bands
by several model numbers.
Still, quite impressive work by an individual
practitioner.
Rick
On 8/20/2016 7:19 PM, Attila Kinali wrote:
Moin,
I stumbled over a new open hardware/source VNA design:
http://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-
network-analyzer.html
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
performance.
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Attila Kinali
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/
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and follow the instructions there.
Message: 6
Date: Sun, 21 Aug 2016 06:37:25 +0000 (UTC)
From: Bob Albert bob91343@yahoo.com
To: Orin Eman orin.eman@gmail.com, Discussion of precise time and
frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID: 606808105.445729.1471761445411@mail.yahoo.com
Content-Type: text/plain; charset=UTF-8
Well that's a start. Thanks for the link! I would need more information, as this project goes into areas that are new to me. And there is no clue as to the cost of construction.
But I'll study what's there and if nothing else, learn something.
Bob
On Saturday, August 20, 2016 10:46 PM, Orin Eman <orin.eman@gmail.com> wrote:
To 60MHz: http://n2pk.com; PCBs available here: http://www.makarov.ca/vna.htm
To 500MHz, lower dynamic range to 1.3GHz: http://sdr-kits.net/VNWA3_Description.html
OK, so the latter isn't build it yourself anymore.
I have version 2.6 of the latter and it works really well to about 575MHz. Traces can get noisy after about 575MHz.
Remember these VNAs are only as good as the calibration kit you use with them!
Orin.
On Sat, Aug 20, 2016 at 9:46 PM, Bob Albert via time-nuts time-nuts@febo.com wrote:
I was interested in this, but my needs are mostly below 100 MHz. I wonder what could be done similarly for this lower range...
Bob
On Saturday, August 20, 2016 8:54 PM, Richard (Rick) Karlquist <richard@karlquist.com> wrote:
Another great posting, Attila.
When I was with Agilent, we looked at all kinds of
simplified network analyzer architectures, and I
would have to say the author is really well informed.
One issue he doesn't seem to be aware of is that the
ADL5801, when driven single ended, has some quirks
below 100 MHz that I discovered experimentally.
(The data sheet is silent on this). IMHO, it
would be worth 7 Euro's to use a balun, however,
I would like to know the part number of this
supposed component. I am not so sure about MCL
actually covering 30 MHz to 6 GHz in the same
balun. Sometimes their advertising is confusing,
and when they say .03-6 GHz baluns, they mean
that the range can be covered in several bands
by several model numbers.
Still, quite impressive work by an individual
practitioner.
Rick
On 8/20/2016 7:19 PM, Attila Kinali wrote:
Moin,
I stumbled over a new open hardware/source VNA design:
http://hforsten.com/cheap- homemade-30-mhz-6-ghz-vector- network-analyzer.html
Unlike other designs out there, this one is very well done and has very
little room for improvement, without increasing the price considerably.
About the only things i would do different is to use two receiver
channels, one fix connected at the TX source to be able to do a
difference measurement between TX and the RX channels and thus
improving precision. And the other would be to use a dual ADC
with an FPGA for the data processing, again in order to increase
performance.
But as I wrote, both changes would increase complexity and price.
Other than being a well thought through design, the website also
explains all the big design choices and why this or that has been
done instead of one of the many alternatives. That alone makes it
worth reading, IMHO.
Attila Kinali
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.
Message: 7
Date: Sun, 21 Aug 2016 08:25:33 +0100
From: "David J Taylor" david-taylor@blueyonder.co.uk
To: "Bob Albert" bob91343@yahoo.com, "Discussion of precise time and
frequency measurement" time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID: 0DAAC1B32EE64AF39387283C86E19A96@Alta
Content-Type: text/plain; format=flowed; charset="utf-8";
reply-type=original
[]
To 500MHz, lower dynamic range to 1.3GHz:
http://sdr-kits.net/VNWA3_Description.html
OK, so the latter isn't build it yourself anymore.
I have version 2.6 of the latter and it works really well to about 575MHz.
Traces can get noisy after about 575MHz.
Remember these VNAs are only as good as the calibration kit you use with
them!
Orin.
---=
Folks,
I have one of these and it works really well, even up to 1.3 GHz. I know
that some have used it for characterising 32 kHz crystals so it works down
at LF as well.
I can strongly recommend the support group as the source of much expertise,
and it's regularly visited by the designer as well:
http://groups.yahoo.com/group/VNWA/
Some of my own very simple plots:
http://www.satsignal.eu/Radio/ddamtek-filters.html
http://www.satsignal.eu/Radio/RX-filters.html#response
73,
David GM8ARV
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor@blueyonder.co.uk
Twitter: @gm8arv
Message: 8
Date: Sun, 21 Aug 2016 12:21:12 +0200
From: Attila Kinali attila@kinali.ch
To: Bob Albert bob91343@yahoo.com, Discussion of precise time and
frequency measurement time-nuts@febo.com
Subject: Re: [time-nuts] DIY VNA design
Message-ID: 20160821122112.93490998772fd08e1d801689@kinali.ch
Content-Type: text/plain; charset=UTF-8
On Sun, 21 Aug 2016 04:46:10 +0000 (UTC)
Bob Albert via time-nuts time-nuts@febo.com wrote:
I was interested in this, but my needs are mostly below 100 MHz.
I wonder what could be done similarly for this lower range...
As Orin mentioned, there are some designs for that range out there,
best known are probably the two Orin listed (N2PK and the VNAW by DG8SAQ).
Although these are good designs, they are not as good as the one by
Henrik Forstén. Henrik addresses many issues that the other leave out
for simplicity.
What I would do instead is use Henrik's design and do some adaptions.
There are four parts that limit the frequency at the lower end:
the signal sources, the filters for the sources, the mixer and
the directional couplers.
For the signal source there are two choices: DDS and down-mixing.
The DDS is probably the obvious choice and delivers good results,
but limits the maximum frequency if you have price limit.
The down-mixing approach uses one of the PLL's with VCO as the
original design uses, but only within a limited range, eg around
200MHz. This signal can then be down-mixed using a crystal oscillator
(or another PLL+VCO) and a suitable mixer (eg LTC5512 or a DIY diode mixer).
Advantage of this is, that the spurs of the PLL+VCO can be surpressed
to a large extend, as the frequency range is quite narrow relative to
the output frequency of the PLL+VCO.
For the directional couplers, the approach used with Henriks design
will not work for low frequencies, as this type of coupler needs a length
of approximately lambda/4 to work optimally. I.e. they would become
unweildingly large. The two choices I am aware of for the lower frequency
ranges are transformer based directional couplers or resistive bridges.
Transformer based couplers have the disadvantage of a non-flat frequency
response and an upper and lower frequency limit, given by the characteristics
of the transformer (number of windings/inductance and the used ferrite).
Their advantage is that they have very little loss. Resistive bridges on
the other hand have a loss of 3db (respectively a -6dB signal at each output),
but are totally flat down to DC and up to several hundred MHz or even GHz if
RF resistors are used.
Most of the above mentioned methods have a lower frequency limit somewhere in
the range of 20kHz and ~100kHz. If you want to go below that limit, you will
need to adapt the circuit further:
For the signal source the DDS approach is the only one that will result
in a good SNR at a reasonable price. Easiest way to go is to use a 16bit
DAC at >1MHz and an uC or FPGA to feed it (but use some low jitter oscillator
as clock source for the DAC). The other components in the signal path
that are limiting are the baluns and mixers. I would get rid of those two
all-together and digitize the signal from the directional couplers directly
using an ADC with >1Msps and 16-18bit. If you limit yourself to the range
of 10Hz-20kHz, you can do all this using audio ADC/DACs and get a very
high performing system.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
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End of time-nuts Digest, Vol 145, Issue 41