Re: [time-nuts] Is Timelab with a Prologix-Eth and a PM6680 - working ?

2012-07-04 Thread cfo
On Tue, 03 Jul 2012 15:33:33 -0700, John Miles wrote: Ahhh ... Thanx now i know why my 1hr Trace Duration was so fast. I assumed that Timelab would set the sampling interval written in Timelab via GPIB. But i'll just select 1sec manually. That can be a bit confusing. The TimeLab drivers

[time-nuts] Repairing a PTS 160

2012-07-04 Thread Brooke Clarke
Hi: I got a PTS 160 S2N1X for a very good price because it has no output. http://www.prc68.com/I/PTS160.html Are there any documents that have theory of operation, schematics or other info that would be helpful in a repair? PS. What does the X mean in the part number PTS 160 S2N1X? -- Have

Re: [time-nuts] Repairing a PTS 160

2012-07-04 Thread Don Latham
NIX means no output? Kinda like a monode? Don Brooke Clarke Hi: I got a PTS 160 S2N1X for a very good price because it has no output. http://www.prc68.com/I/PTS160.html Are there any documents that have theory of operation, schematics or other info that would be helpful in a repair? PS.

Re: [time-nuts] Repairing a PTS 160

2012-07-04 Thread Had
Brooke, If you don't have a manual for it look in the test equipment section of my Web page: www.to-way.com hadley At 09:57 AM 7/4/2012, you wrote: Hi: I got a PTS 160 S2N1X for a very good price because it has no output. http://www.prc68.com/I/PTS160.html Are there any documents that

[time-nuts] Allan Deviation question

2012-07-04 Thread Bill Dailey
I am measuring a 10MHz OCXO. I am wondering about my methods and their effect of Allan Deviation. SETUP: I am running the signal into my radio (gps disciplined) and taking the resulting audio and running it to a sound card (oscillator gps disciplined) then looking at the result in Spectrum

Re: [time-nuts] TimeLab with 5370A

2012-07-04 Thread Don Latham
Downloaded the latest timelab, 1.014 to use with my 5370a and prologix net adapter. Was working with previous version. Prologix is seen in the list, and if I pick it in acquire, I can get readings in the monitor. when I go to measure, the notes say lost connection, and the prologix has vanished

Re: [time-nuts] Allan Deviation question

2012-07-04 Thread Azelio Boriani
I think that no one can say anything on that setup. Anyway, try this: run the GPSDO 10MHz into the radio and take the measurements. Then run your signal and let us know the difference. Usually running the reference against itself (if possible) gives the noise floor of the measurement setup... if

Re: [time-nuts] Allan Deviation question

2012-07-04 Thread Magnus Danielson
Hi Bill, On 07/04/2012 10:23 PM, Bill Dailey wrote: I am measuring a 10MHz OCXO. I am wondering about my methods and their effect of Allan Deviation. SETUP: I am running the signal into my radio (gps disciplined) and taking the resulting audio and running it to a sound card (oscillator gps

Re: [time-nuts] timelab

2012-07-04 Thread Don Latham
Got it going---doesn't take adev data in frequency mode but time interval working fine. Don -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. R. Bacon If you don't know what it is, don't poke it. Ghost

[time-nuts] HP 117/10509a

2012-07-04 Thread Merchison Burke
Hello, Has anyone successfully replaces the Nuvistors in the 117 and the 10509a with FETs. I would like to replace them with inexpensive FETs instead of buying the expensive Nunistors. Thanks for all help, Merchison ___ time-nuts mailing list --

Re: [time-nuts] timelab

2012-07-04 Thread John Miles
Hi, Don -- You can view all of the measurement types (ADEV, MDEV, HDEV, TDEV, phase difference, frequency difference) regardless of whether you are acquiring TI or frequency data from the 5370. The performance floor will be somewhat better in TI mode, and long-term frequency chart readings will

Re: [time-nuts] timelab

2012-07-04 Thread Don Latham
Thanks, John. When I did the 1sec pulse start vs next 10 MHz crossing trick, I got very reliable behavior. When I tried the start on 10 MHz stop on 100 ft RG58 delay, I got communication loss. You've given the symptom and cause exactly. I can set the data rate in the sample text box in the acquire

Re: [time-nuts] timelab

2012-07-04 Thread John Miles
-Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Don Latham Sent: Wednesday, July 04, 2012 9:37 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] timelab Thanks, John. When I did the 1sec

Re: [time-nuts] timelab

2012-07-04 Thread Don Latham
You're welcome, good to hear it's helpful! Yes, the front-panel display rate control is what I use to limit the data rate on my 5370 -- see the last part of my longer post from yesterday. The sample rate field in the dialog box is only used to tell TimeLab what the actual data rate is.

Re: [time-nuts] timelab

2012-07-04 Thread John Miles
The sample rate field in the dialog box is only used to tell TimeLab what the actual data rate is. The program doesn't alter the counter's controls at all. good. That will be very easy to do. Are there any tricks to use in your prologix setup program? Meaning the one from the older

Re: [time-nuts] timelab

2012-07-04 Thread Don Latham
Gotcha, Thanks. Happy 4th. My neighbors making many bangs. we have real fireworks from the Res here in Montana... Don John Miles The sample rate field in the dialog box is only used to tell TimeLab what the actual data rate is. The program doesn't alter the counter's controls at all.

Re: [time-nuts] timelab

2012-07-04 Thread Ron Ward
Hi: I am also new and would like information about ADEV, MDEV, HDEV, TDEV, Phase and Frequency Difference. Thanks, Ron -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of John Miles Sent: Wednesday, July 04, 2012 9:18 PM To: 'Discussion of

Re: [time-nuts] HP 117/10509a

2012-07-04 Thread Ron Ward
Hi: I have been thinking of doing the same thing! I have some 2N301 dual gate MOSFET's that I want to use. I would rather consider successful conversions done by others rather than reinvent the wheel. Ron -Original Message- From: time-nuts-boun...@febo.com

Re: [time-nuts] timelab

2012-07-04 Thread Don Latham
So if the 5370 determines the data rate, then in calculating adev or other such products, we're assuming the time differences are ergodic because we're not getting them sequentially, but rather selecting the delay intervals at long inetrvals between them? John Miles The sample rate field in the

Re: [time-nuts] HP 117/10509a

2012-07-04 Thread Don Latham
You need the gate volt-drain current curves to match the nuvistor grid-plate characteristic and the fet breakdown voltage has of course got to be high enough. I've gotten nuvistors at pretty reasonable cost on ebay... Don Ron Ward Hi: I have been thinking of doing the same thing! I have some

Re: [time-nuts] timelab

2012-07-04 Thread John Miles
-Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Ron Ward Sent: Wednesday, July 04, 2012 10:12 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] timelab Hi: I am also new and would like