[time-nuts] Re: Syncserver S300 power supplies

[Andrew Kalman]

FWIW, the PSU inside the GSG-5/6 units I have is an ASTEC 45W unit,
open-frame, that supplies 5V/5A, 15V/2.5A & -15V/0.7A.

Spectracom/Pendulum/Orolia put a nice "cage" around it when they install it
into these units.

It's the same as this one on eBay right now:
https://www.ebay.com/itm/234706193170


--Andrew

--------------------------------
Andrew E. Kalman, Ph.D.


On Sun, Jan 15, 2023 at 12:25 PM Andrew Kalman <aekalman at gmail.com> wrote:

> 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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>