Re: [time-nuts] HP 5372A TIA Question

2018-06-03 Thread Magnus Danielson
Hi Adam, OK, good to hear about the progress. Let us know about what you learn and if you need additional input. I'm curious what is the cause of this error. Cheers, Magnus On 06/03/2018 04:09 AM, Adam MacDonald wrote: > Thanks Gents, > I ran the additional tests recommended by Poul and Magnus a

Re: [time-nuts] HP 5372A TIA Question

2018-06-02 Thread Adam MacDonald
Thanks Gents, I ran the additional tests recommended by Poul and Magnus and I concur that the interpolator board is not the likely culprit.  I reversed the input cables as well as the pods in separate experiments to rule out those contributors with no different results.  I thought it may be a tr

Re: [time-nuts] HP 5372A TIA Question

2018-05-31 Thread Ed Palmer
On 5/31/2018 10:00 AM, "Poul-Henning Kamp" wrote: PS: I do not recall it being mentioned, but the 1 MOhm input pods are horribly unstable compared to the 50 Ohm input pods, which are basically just a stripline and a BNC connector. One thing to note about all the 5372A pods: They should all

Re: [time-nuts] HP 5372A TIA Question

2018-05-30 Thread Poul-Henning Kamp
In message , Magnus D anielson writes: >Consider that you need to swap the cables to verify that it is static >with the setup and does not follow the cables. Run long series of measurements with the HP5372A OCXO free-running and with it slaved to the DUT clock. Any imperfection in the

Re: [time-nuts] HP 5372A TIA Question

2018-05-30 Thread Magnus Danielson
Hi Adam, On 05/30/2018 12:26 AM, Adam MacDonald wrote: > Time Nuts, > I have a nice new-to-me 5372A that I'd like to use as part of a DMTD > stability analysis system.  After getting a few odd glitches from a very > stable source spaced 2 ns above or below the main time interval reading, OK, so

[time-nuts] HP 5372A TIA Question

2018-05-29 Thread Adam MacDonald
Time Nuts, I have a nice new-to-me 5372A that I'd like to use as part of a DMTD stability analysis system.  After getting a few odd glitches from a very stable source spaced 2 ns above or below the main time interval reading, I decided to run the performance verification checkout from the servic