[time-nuts] Fine print on HP 5334B

[John Miles]

What do people observe on their 5370A/Bs?  After warmup, I tend to see a
bias of about +0.0005 Hz, or 5E-11, when observing its own 10 MHz source.
There is some occasional random waffling on the order of about +/- 0.001 Hz
but for the most part it reads close to 10.000 000 000 5.

I have never been able to calibrate the interpolators (specifically the
anticoincidence adjustment) in these counters, due to lack of a
vernier-adjustable pulse generator.  When I was going through one last week,
I just left the anticoincidence pot in the middle of its range, and couldn't
see any ill effects from doing so.  The manual is not that great at
describing exactly what this adjustment does.

-- john, KE5FX


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Hal Murray
> Sent: Thursday, February 22, 2007 12:10 PM
> To: time-nuts at febo.com
> Subject: [time-nuts] Fine print on HP 5334B
>
>
> (Interesting timing given the SR620 discussion.)
>
> I'm (finally) getting my GPIB gizmo working.
>
> I have a HP 5334B running off its (good) internal osc looking at
> the output
> of a Z3801A.  Assuming the Z3801A is stable, this is a backwards way of
> looking at the internal osc.  (There is a shared in/out connector for the
> internal clock, so I can't see the internal osc if I feed it an ext
> reference.)
>
> I left it running for a night with the mostly default setup and 100 cycle
> averaging.  I think the default gate time is 0.3 seconds.  Answers ranged
> from:
>   F  +9.999999330E+06
>   F  +9.999999333E+06
>