On Nov 23, 2011, at 5:50 AM, Chuck Forsberg WA7KGX N2469R wrote: > How sensitive are each of a Thunderbolt's 3 supplies to noise?
This doesn't break down the sensitivities to noise, but Tom shows a range of TBolt output noise for different 3 voltage power supplies: http://www.leapsecond.com/pages/tbolt/noise.htm My suspicion is the -12V is the least sensitive as I heard that it is only used for the RS-232 port. I think either the the +5V which controls the electronics (including things like comparators) and the +12V (which controls the heater to the OXCO) are both noise sensitive. I think the +5V will be the most sensitive. For the PRS10 Rb, two 24V inputs are provided. A higher current for the heater and a lower current for the electronics. To my mind, that makes it likely the electronics (+5V on the TBolt) are the most sensitive. Maybe someone will actually have data to show. Kevin _______________________________________________ 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.
