Hi David, I just got the Rb plug-in module, not the whole system.
The PCB has a small, unidentified DC/DC converter. The markings are probably under the cemented-on heatsink. There is also a potted transformer, which may be a common-mode choke. All I'd really like is a schematic of the PCB. I expect the board is not particularily useful. Thanks, -John ================ > On Sat, Aug 25, 2012 at 11:41:21AM -0700, J. Forster wrote: >> Hi, >> >> I recently picked up the Rb module from a Datum PRR-10 Precision >> Reference >> Receiver. >> >> The Rb connections are pretty obvious, but does anybody have any info on >> the rest of the module? Even a schematic would help. >> >> I'm trying to decide whether the PCB has anything useful on it. > > I have the whole working PRR-10 system including 2 Rbs and AFAIK > that PCB just contains redundant power and provisions for passing a > couple of status bits from the RB (lock I think)... if you have a PRR-10 > system it would be useful, but I'm not sure it is otherwise. > > Possible there is a -48 volt input DC to DC converter... if it > would be useful I go go look at one of mine to refresh my memory. > > The heat sink is useful with the LPRO RB of course. > > I assume you bought it for the LPRO... > > You may not be aware, but the system is designed to use a DDS to > offset the frequency of a free running 10 MHz source to make it accurate > based on GPS timing ... so the Rb is not disciplined with its C field or > similar - it is free running. > > > > >> >> Thanks, >> >> -John >> >> ================ >> >> >> _______________________________________________ >> 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. > > -- > Dave Emery N1PRE/AE, d...@dieconsulting.com DIE Consulting, Weston, Mass > 02493 > "An empty zombie mind with a forlorn barely readable weatherbeaten > 'For Rent' sign still vainly flapping outside on the weed encrusted pole - > in > celebration of what could have been, but wasn't and is not to be now > either." > > _______________________________________________ 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.