[time-nuts] My HP5370A performance

Rex rexa at sonic.net
Fri Jun 19 14:40:20 EDT 2009


John Miles wrote:

>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
>
>
>  
>

Bruce and John,

Thanks for pointing me back to these operator checks. I ran through the 
procedures this morning and nothing seems out of spec. I guess I just 
had unrealistic expectations about how stable the displays should be 
while looking at that counter's own clock.

Here's my results from the Operators Checks on 3-11, 3-12:

1 - 12. Setup

13. Initial TI function: 99.59 to 99.68 nS

14. Sample 100, 99.605 to 99.618
                1000, 99.603 to 99.612
                  10K, 99.6xx x
                100K, 99.6xx x

15. STD DEV, +-TI
        SS 100, 18.x to 24.x pS
              MIN, -0.45 to -0.53
              MAX, -0.3x

16. DSP REF 000
      SET REF 99.613 nS
      CLR REF 00.000
      DSP EVTS 100

17. MEAN, 1, +-TI :   -0.37 to -0.47 nS
      PERIOD COMPLEMENT  ok

18. TRIG LEV  ok

19. FREQ .01S  9.999 999 9xx to 10.000 000 0x
                 .1S   9.999 999 99x x to 10.000 000 01x
                  1S  9.999 999 999 xx to 10.000 000 001 x

20. PERIOD 99.9X to 100.00 nS

21. Start/Stop Output ok


I guess all of that is in specification. Any comments appreciated.

-Rex




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