[time-nuts] Re: Syncserver S300 power supplies

[Andrew Kalman]

I posted some pix of the insides of an Orolia (/Spectrocom) GSG-series GNSS
simulator last week -- it uses an off-the-shelf power supply, with L+N on a
connector, GND on a ring-terminal wire, and then the various regulated
outputs on another connector.

The internal power supply is mounted on ~10mm standoffs above the PCB. I
noticed last night that there are several (maybe a total of three?)
different hole patterns in the PCB beneath the power supply (that is using
one of them). So, it looks like they had the foresight to design for a
couple of different  power supplies, and just had to do some trivial
cabling between the instrument and the power supply to make it all work.

--Andrew



On Sat, Jan 14, 2023 at 4:35 PM Todd Smith via time-nuts <
time-nuts at lists.febo.com> wrote:

> Thanks Glen,
>
> I had tried to send it off to a repair house, but they weren't able to
> repair it so I am looking for options.  The label is pretty clear and I
> have looked at other power supplies with the same specs but they have
> different pinouts and it is extra trouble to repin the motherboard power
> connector to the new PS.  The other issue is trying to match up passive
> cooling with the 125 watt output rating.
>
> Obviously, Symmetricom chose a PS that met their needs, just wish it was a
> bit more common.  The S200 and S250 use a different PS with different
> voltages and lower wattage rating.
>
> Thanks for your help.
> Todd Smith
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