[time-nuts] HP 5370B question

[Ulrich Bangert]

Bob,

just for fun I run the same test with my SR620 counter with results VERY
similar to your measurements. See the attached distribution.

Best regards
Ulrich Bangert

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Mike Feher
> Gesendet: Samstag, 22. Dezember 2007 12:41
> An: 'Discussion of precise time and frequency measurement'
> Betreff: Re: [time-nuts] HP 5370B question
> 
> 
> Bob -
> 
> With most counters, I have found that running them at 
> slightly less than 10 MHz gives you an extra displayed digit 
> of resolution. If the "1" out of 10 MHz were to be displayed, 
> it would take up one more digit in the MSD position, leaving 
> you one less in the LSD position. Since the numbers are so 
> close anyway, if measuring for stability, I personally would 
> prefer that extra digit in the LSD position. Regards - Mike 
> 
>  
>  
> Mike B. Feher, N4FS
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960
>  
>  
> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf Of Robert E. Martinson
> Sent: Saturday, December 22, 2007 1:57 AM
> To: 'Discussion of precise time and frequency measurement'
> Subject: Re: [time-nuts] HP 5370B question
> 
> I ran my 5370B for one hour, counting its own reference with 
> a one second gate.  The summary of the results are:
> 
> min	9999999.99650  Hz
> max	9999999.99963  Hz
> avg	9999999.99796  Hz
> median	9999999.99787  Hz
> 
> Per the manual's  Performance Test 5 (page 4-12) the spec is 
> +/- 0.005 Hz. It would be nice if my average was 
> 10,000,000.000 HZ but??  From a Time-nuts thread of several 
> months ago, the adjustment for this result is very touchy and 
> it's likely you will make the result worse rather then 
> better.  Since mine is in spec, I'll leave it alone.
>  
> I have sent the graphical & raw data to Corby, if anybody 
> else is interested please advise me of your email address.
> 
> Regards,
> Bob Martinson, N1VQR
> 
> 
> 
> 
> -----Original Message-----
> From: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] On Behalf > Of corby d 
> dawson
> Sent: Wednesday, December 19, 2007 2:15 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] HP 5370B question
> 
> 
> Hi,
> 
> Could a few of the 5370B owners connect the counters 
> reference output to its counting input jack and with a 1 
> second gate let me know what the last 2 digits are doing?
> 
> An earlier post implied that the last couple digits will 
> wander around due to the way its designed.
> 
> I'd like to know what a couple different counters show to see 
> if that is indeed true!
> 
> Thanks,
> 
> Corby Dawson
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-> bin/mailman/listinfo/time-nuts
> and 
> follow the instructions 
> there.
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-> bin/mailman/listinfo/time-nuts
> and 
> follow the instructions 
> there.
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to 
> https://www.febo.com/cgi-> bin/mailman/listinfo/time-nuts
> and 
> follow the instructions there.
> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ClassificationChart.pdf
Type: application/pdf
Size: 8536 bytes
Desc: not available
URL: <http://febo.com/pipermail/time-nuts_lists.febo.com/attachments/20071223/5e65bc40/attachment.pdf>