[time-nuts] Synergy systems evaluation board power requirements.

Bruce Griffiths bruce.griffiths at xtra.co.nz
Wed Sep 30 00:27:20 UTC 2009

Douglas Wire - PUPCo Studios wrote:
> Ahh, I kind of hate to show my ignorance to the list here, but I am so used
> to it by now. I have an old evaluation board from Synergy Systems for what
> would appear to be even the old Motorola built (not iLotus) M12M style GPS
> timing board. The problem I am encountering is that while the guys at
> Synergy have been wonderful, no one mentioned what their old Caltronics
> prototype board required as far as a DC input. While I know all about the
> M12M and know it likes to see around 3volts DC, but. the evaluation board
> either requires a higher supply, or I got a bad one. Since I have none and
> can find no data anywhere on this particular evaluation board and I didn't
> want to pester Art or the other guys back at Synergy, does anyone know what
> sort of supply voltage these older evaluation boards require? I certainly
> hope it is above the 3 volt range of the M12M, for if it isn't, I have a bad
> board. Any help and/or data would be greatly appreciated. I tried to figure
> this out myself, but many of the surface mount items' identifying marks have
> been rubbed away, so I was not able to intelligently de-engineer the unit. I
> thank you all in advance.
> Warm regards,
> Douglas M. Wire, GED, FNA,
> PUPCo Research Group
> contact at pupcostudios.com
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

I have one of these for the M12+T.

Yes it requires a higher voltage.
There is a surface mount 7805V regulator on board so an input voltage of
9V or so is recommended (thats what is supplied by the plugpack that
came with it).

There is a 3V SMT regulator on board as well for the GPS receiver module.


More information about the time-nuts mailing list