[time-nuts] EFC Input pin impedance for the HP 10544A and 10811-6011
bruce.griffiths at xtra.co.nz
Sun Oct 28 21:52:50 EDT 2007
> Hello everyone,
> Does anyone know the input resistance of the EFC pin for the
> HP 10544A and 10811-6011 OCXO's?
> I have the spec sheet but it is not listed.
> Can I assume something like 50K? This the the value for Crystek devices.
Look at schematic for 10544A:
As long as the varicap is reverse biased only the dc load on the EFC
input is diode leakage.
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