Mark Spencer wrote:
Seasons greetings.
I was pleasantly surprised to find that a new to me HP 5328A had an 10811 in
it. (I was expecting the older OCXO..) After leaving it running for a
week I adjusted the frequency and while doing so I noticed that the out put
frequency changes by a third of a hz or so if I add or remove a 50 ohm load.
I'm measuring the frequency at the timebase output connection of the
5328A. Is this to be expected ?
Many thanks
Mark Spencer
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No, that seems to be a couple of orders of magnitude larger than the
specs for the 10811A would lead one to believe.
Maybe there's a problem with the output buffer amp in the 10811A?
Bruce
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