I know that several list members have bought FE-5680A rubidiums. Of all the various ebay sellers that you have bought this model from, who would you recommend? If I wanted a straight 10MHz unit vs a frequency agile unit, would you recommend a different seller?
Joe Gray W5JG On Wed, Apr 20, 2011 at 1:02 PM, Murray Greenman <murray.green...@rakon.com> wrote: > The confusion is understandable. There are so many different variants of > the FE-5680A, and they are not easy to identify. > > Some of the information you see out there is from folk who measure the > voltage on the pins with a meter, not understanding what they are > looking at. When I've investigated such devices (I have several FEI > units) I start by tracing my way back from the power supply regulators > to determine where the power goes in, and what it should be, to avoid > mistakes. It's also been a useful technique with things like GPSDOs > where nothing is known about the pinouts (Trimble NTGS-50AA for > example). > > Sure is frustrating when you have one that isn't frequency agile! One of > my FEI units is an FE-5680B with only 1pps output. The Chinese supplier > thought it was faulty, but the 1pps pulse is only 5us wide, and isn't > present until the unit has locked. I found a very useful 60MHz reference > inside the unit as well. > > 73, > Murray ZL1BPU > > > _______________________________________________ > time-nuts mailing list -- firstname.lastname@example.org > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- email@example.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.