[time-nuts] Fine print on HP 5334B

David I. Emery die at dieconsulting.com
Thu Feb 22 16:16:02 EST 2007


On Thu, Feb 22, 2007 at 12:29:35PM -0800, John Miles wrote:
> 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

	Mine is off more (or was until it died a couple of weeks ago).   But
I have yet to attempt the full cal procedure for reasons similar to yours.

	I did find that using GPSDO 10 mhz the error was quite stable
(always reading low in my case, not high) but apparently just barely within
the spec in the manual.



-- 
   Dave Emery N1PRE,  die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."




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