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 <[email protected]> on behalf of [email protected] <[email protected]> Sent: Sunday, August 21, 2016 12:00 PM To: [email protected] Subject: time-nuts Digest, Vol 145, Issue 41 Send time-nuts mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of time-nuts digest..." Today's Topics: 1. Austron Phase Stepper Manual needed ([email protected]) 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: <[email protected]> To: "[email protected]" <[email protected]> Subject: [time-nuts] Austron Phase Stepper Manual needed Message-ID: <[email protected]> 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 <[email protected]> To: [email protected] Subject: [time-nuts] DIY VNA design Message-ID: <[email protected]> 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" <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] DIY VNA design Message-ID: <[email protected]> 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 <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] DIY VNA design Message-ID: <[email protected]> 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 <[email protected]> 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 -- [email protected] 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 <[email protected]> To: Bob Albert <[email protected]>, Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] DIY VNA design Message-ID: <capjy7u_nmzkqwzpjbjnmeolod29q6nxbqpmr+f45d+zfdyc...@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 < [email protected]> 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 < > [email protected]> 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 -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > ------------------------------ Message: 6 Date: Sun, 21 Aug 2016 06:37:25 +0000 (UTC) From: Bob Albert <[email protected]> To: Orin Eman <[email protected]>, Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] DIY VNA design Message-ID: <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/ mailman/listinfo/time-nuts and follow the instructions there. ______________________________ _________________ time-nuts mailing list -- [email protected] 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" <[email protected]> To: "Bob Albert" <[email protected]>, "Discussion of precise time and frequency measurement" <[email protected]> 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: [email protected] Twitter: @gm8arv ------------------------------ Message: 8 Date: Sun, 21 Aug 2016 12:21:12 +0200 From: Attila Kinali <[email protected]> To: Bob Albert <[email protected]>, Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] DIY VNA design Message-ID: <[email protected]> Content-Type: text/plain; charset=UTF-8 On Sun, 21 Aug 2016 04:46:10 +0000 (UTC) Bob Albert via time-nuts <[email protected]> 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. ------------------------------ Subject: Digest Footer _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ------------------------------ End of time-nuts Digest, Vol 145, Issue 41 ****************************************** _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
