[time-nuts] Connections for FE-5680A rubidium sources

Bob Camp kb8tq at n1k.org
Tue Dec 16 07:16:24 EST 2014


One fairly important issue - the unit needs to be on a heat sink. If you run it without cooling of some sort, it will not run for very many years.


> On Dec 16, 2014, at 5:22 AM, Dr. David Kirkby (Kirkby Microwave Ltd) <drkirkby at kirkbymicrowave.co.uk> wrote:
> I have a couple of Rb sources bought from China or Hong Kong a year or
> two ago. I'd like to fix these up. Initially in a box where I can
> adjust them to frequency manually, but perhaps later lock them to GPS.
> Looking around the web, there are countless options on these things,
> and different connection diagrams. Can anyone tell me what these are.
> I have attached a picture of one. I have doctored the picture ab bit
> so there are large arears of one shade, so the images compress quite a
> bit. Essentially they are rather dirty looking metal boxes with rather
> dirty white labels on, but such detail is not needed.
> The big label says:
> FE-5680A
> FEI P/N 217400-303520-1
> The smaller label with the barcode differs a bit between the two units.
> 1)  FE-5680A UN 61391 S/N 02444-57246 (on the one I photographed)
> 2)  FE-??80A UN 66794 S/N 0340-66253 (can't quite read all of it, but
> I assume the missing characters are "56".
> There is a small adjustment screw on the right, and a 9-pin
> D-connector, with the lead cut at about 40 mm from the connector.
> I can open one up and take a picture internally if need be.
> Dave
> <rubidium-doctored.jpg>_______________________________________________
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