First, try counting the Rd reference frequency output. If one reads right
you are halfway to solving the problem.
John WA4WDL
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From: "Jerry Mulchin" <[email protected]>
Sent: Wednesday, March 21, 2012 8:05 PM
To: <[email protected]>
Subject: [time-nuts] Frequency Counter Errors
I have a question for the collective group.
I have a HP 5372A and a HP 5328A frequency counters. Both counters use the
same
PRS-10 Rubidium frequency standard driving a 6 channel reference
distribution amplifier
to each counters reference input port. The problem is this;
When I measure the same frequency on both counters, (done one at a time)
the frequency
is generally off by about 300 Hz or so between the counters. Now I would
expect an error
of +/- 1 digit, but 300Hz seems a bit strange to me. I can not find the
problem and the
difference exists even if I use the internal timebases of each counter,
give or take the timebase errors.
The frequency is always at least >200 to 300Hz off between the two
counters and I don't know
which one to believe. You know the "man with 2 clocks" problem.
Anyone have any idea what may be causing this?
Thanks
Jerry
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