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5300A + 5302A check


 

开云体育

I have a 5300A measuring system readout with a 5302A 50 Mhz counter.? When I first turn the unit on, with the function knob dialed to "check" the counter reads 10.0000 Mhz but after it warms up for a few minutes, the counter begins to read 9.9999999 MHz.? If I plug a cable from the front bnc to the timebase output it reads 10.0000 Mhz.? I have adjusted the crystal frequency to give correct readings from a more accurate 10 Mhz reference.? Is the check function supposed to read 9.999999 or is it supposed to read 10.0000000?? I don't have a manual, so I don't know.
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Thanks,
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Steve Hogan