[time-nuts] Fixing an HP 5370A with a missing ROM board

[Mark Sims]

If you are measuring frequency,  the accuracy of the results are totally dependent upon the accuracy of the reference frequency.  The 10811 can move 2.5e-10 with a 10% change in line voltage (which happens quite often around here as quite a few zillion watts of air conditioning cycle on and off over a day)

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Due to the short measurement intervals of the 5370, it is actually
pretty insensitive to the reference frequency quality. 


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