[time-nuts] FE5680 GPS Disciplined Controller
Charles Steinmetz
csteinmetz at yandex.com
Thu Jun 19 04:59:35 EDT 2014
Bill wrote:
>There are two types of FE5680's. The older style used an ANALOG
>approach to controlling the Rb. The newer version changed the
>circuitry so that frequency control was done with a DDS device by
>means of sending a digital word to the DDS and thus changes
>frequency. The digital version does not permit any ANALOG control.
Instructions for determining which version one has would make it
easier for potential users to decide if they want a
controller. Preferably, without opening it up or turning it on, if
that is possible. Can you tell by the label, for example?
Best regards,
Charles
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