[time-nuts] HP5370A self test fault characteristics anddiagnosis

Rex rexa at sonic.net
Fri Jun 19 06:40:17 EDT 2009


John Miles wrote:

>>I have a 5334B and looking at the same signal it seems more stable. From
>>memory (I haven't tried it recently) the 5370 had 3 or 4 unstable low
>>order digits. Even selecting high periods or sample size didn't seem to
>>remove noise out of two or three digits.
>>
>>I never used a 5370 before, but this doesn't seem right. I get several
>>random digits even looking at it's own clean 10 MHz external clock. That
>>shouldn't be, should it?
>>    
>>
>
>The procedure Bruce was describing is basically the jitter test from the
>manual, at http://cp.literature.agilent.com/litweb/pdf/05370-90031.pdf (this
>is actually the same copy that David Kirkby scanned a few years ago, hosted
>by Agilent.)  Follow the directions on page 3-11 and 3-12, and post the
>results, especially from step 15.  This jitter figure is usually well under
>50 ps in a 5370 that's working properly.
>
>-- john, KE5FX
>
>
>
>  
>

Thanks. I think I did the beginning of that, but will need to do it 
again to get anything accurate to post. Will do.






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