[time-nuts] time-nuts Digest, Vol 145, Issue 41/AUSTRON PHASE STEPPER MANUAL
Williamson, Cary Michael
Cary.Williamson at gdit.com
Mon Aug 22 12:54:11 UTC 2016
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
________________________________________
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Subject: time-nuts Digest, Vol 145, Issue 41
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Today's Topics:
1. Austron Phase Stepper Manual needed (g4gjl at btopenworld.com)
2. DIY VNA design (Attila Kinali)
3. Re: DIY VNA design (Richard (Rick) Karlquist)
4. Re: DIY VNA design (Bob Albert)
5. Re: DIY VNA design (Orin Eman)
6. Re: DIY VNA design (Bob Albert)
7. Re: DIY VNA design (David J Taylor)
8. Re: DIY VNA design (Attila Kinali)
----------------------------------------------------------------------
Message: 1
Date: Sat, 20 Aug 2016 17:25:00 +0000 (UTC)
From: <g4gjl at btopenworld.com>
To: "time-nuts at febo.com" <time-nuts at febo.com>
Subject: [time-nuts] Austron Phase Stepper Manual needed
Message-ID:
<1438814795.28709791.1471713900454.JavaMail.yahoo at 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 at kinali.ch>
To: time-nuts at febo.com
Subject: [time-nuts] DIY VNA design
Message-ID: <20160821041907.c71d241bf7384296124be5fb at 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 at karlquist.com>
To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID: <e756245e-fea4-d695-ae0f-4246f06a0e39 at 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 at yahoo.com>
To: Discussion of precise time and frequency measurement
<time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID: <192026759.433010.1471754770843 at 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 at 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
>
>
>
_______________________________________________
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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 at gmail.com>
To: Bob Albert <bob91343 at yahoo.com>, Discussion of precise time and
frequency measurement <time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID:
<CAPjY7U_NMzKQwZpjbjNmeoLod29q6NXBqpMr+f45D+zFDycHJg at 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 at 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 at 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 at 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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> To unsubscribe, go to https://www.febo.com/cgi-bin/
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>
------------------------------
Message: 6
Date: Sun, 21 Aug 2016 06:37:25 +0000 (UTC)
From: Bob Albert <bob91343 at yahoo.com>
To: Orin Eman <orin.eman at gmail.com>, Discussion of precise time and
frequency measurement <time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID: <606808105.445729.1471761445411 at 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 at 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 at 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 at 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
>
>
>
______________________________ _________________
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To unsubscribe, go to https://www.febo.com/cgi-bin/ mailman/listinfo/time-nuts
and follow the instructions there.
______________________________ _________________
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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 at blueyonder.co.uk>
To: "Bob Albert" <bob91343 at yahoo.com>, "Discussion of precise time and
frequency measurement" <time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID: <0DAAC1B32EE64AF39387283C86E19A96 at 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 at blueyonder.co.uk
Twitter: @gm8arv
------------------------------
Message: 8
Date: Sun, 21 Aug 2016 12:21:12 +0200
From: Attila Kinali <attila at kinali.ch>
To: Bob Albert <bob91343 at yahoo.com>, Discussion of precise time and
frequency measurement <time-nuts at febo.com>
Subject: Re: [time-nuts] DIY VNA design
Message-ID: <20160821122112.93490998772fd08e1d801689 at 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 at 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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