[time-nuts] Different or defective FE-5680A?

[Joseph Gray]

Further information. I do get a Lock (low) indication on pin-3 and a
PPS on pin-6. Nothing at all on pin-7.

Joe Gray
W5JG

On Fri, Jun 8, 2012 at 1:41 PM, Joseph Gray <jgray at zianet.com> wrote:
> 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