[time-nuts] Austron 1250B

Bill Janssen billj at ieee.org
Sat Aug 30 19:59:49 EDT 2008


corby d dawson wrote:
> Hi,
>
> I am playing with an Austron 1250B and I'd like to add a fine frequency
> adjust.
>
> The data sheet I have on the 1150 oscillator inside indicates that the
> EFC input is an option.
>
> Anyone have a schematic for the 1250B that shows how the 1150 is wired
> in.
>
> If no EFC on this unit I'll be getting rid of it.
>
> Thanks,
>
> Corby Dawson
My 1250A  manual shows the EFC being brought out to the rear panel, The 
front panel EFC
is "over powered" by the voltage put on the rear panel connection. My 
manual has two
interconnection diagrams for the wiring. They both show the BNC 
connector on the rear.

The external EFC is spec.d at + or - 5 Volts

Good luck on the B model
Bill K7NOM



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