[time-nuts] Autek Model 620 GPS Workstation

[bg at lysator.liu.se]

On Thu, July 6, 2006 20:15, Don Mimlitch said:

> I suspect that either the Rubidium Oscillator has
> deteriorated so much that changing its field does not affect the
> frequency.
> Or the Comparator circuit is faulty.
>
> If any one had any circuit diagram I might try to
> replace the Rubidium Oscillator.

Open the box and check what kind of Rb oscillator is in there. At least
for the Rb, odds are that its a well known unit. When you have the pinout,
it should not be to hard to swap in another Rb and/or check if the EFC
signal makes sense.

--
    Björn