[time-nuts] HP-10811AB-OCXO interface questions

[ed breya]

Look in the HP5328A counter manual for the circuit - that's what this 
came from, indicated by the board marking. Seems like an awful lot of 
extra circuitry to support the OCXO. The only thing I can think of 
offhand is it may be a PLL circuit to allow locking to an external 
reference. You'll probably find it not needed or wanted for a fresh 
GPSDO system, but save the connector to go with the 10811.

Ed