Hi

The -12 runs the RS-232 and the negative supply to the DAC buffer. As long as 
it's past about -7V everything works pretty well. With no negative supply the 
DAC may have issues. Most of the OCXO"s run right around 0V….

Bob

On Aug 25, 2012, at 8:55 PM, Hal Murray <hmur...@megapathdsl.net> wrote:

> 
> li...@rtty.us said:
>> The -12 supply is very low current and does not matter much.
> 
> Is the -12 used only for the RS-232, or is it also the negative supply to the 
> DAC?  If the latter, the regulation and noise may be important.
> 
> I think I remember comments about it being used by the DAC.  Wasn't there 
> some mention of the TBolt working with a dead -12 supply, but only as long as 
> the DAC output was above 0.
> 
> 
> 
> -- 
> These are my opinions.  I hate spam.
> 
> 
> 
> 
> _______________________________________________
> time-nuts mailing list -- time-nuts@febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.


_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Reply via email to