Months ago, I ordered two FE-5680A units from nichgeek for my personal use. They work just fine. Recently, I ordered one for work from the same source.
For the work unit, I ordered a small 15 VDC switcher and a 5 V DC-DC module from Jameco. Today, I wired it all up, using the same pinout as the previous units that I bought from nichegeek. Although the unit gets warm, I get no 10 MHz output at all on pin 7. I double checked my wiring and it is OK. I even went home and got one of my units. Plugging my home unit in place of the work unit, mine puts out a nice 10 MHz in short order. Looking closer, I see that the two units are labeled differently. Mine has a large white label that says "P/N 217400-30352-1". On the smaller label "FE-5680A UN 78082" and "S/N 0434-84673". The work unit is silkscreened with "PN: FE-5680A". The small label says "FE-5680A UN37915 REVISION: B" and "S/N 0226-53954". I know that there are several versions of FE-5680A, with different pinouts. I'm wondering if this latest unit is different than the two I purchased before. I've emailed nichegeek and am awaiting a reply. Joe Gray W5JG _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
