Hi 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.
Bob > On Dec 16, 2014, at 5:22 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > <drkir...@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>_______________________________________________ > 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. _______________________________________________ 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.