I have a similar unit that I picked up a few years ago. It only has a 1
PPS output. That's the way it was designed. There are so many
different versions of this stupid model that it's impossible to be sure
what you're buying until you get it on your bench.
If yours is like mine, the DDS is putting out 2^23 Hz (~8.39 MHz) which
then goes through a fixed divider to 1 Hz. You can access the 8 MHz
signal via a tiny socket on the DDS board. There is info online on how
to modify the unit to bring that signal out to a connector and program
it for other frequencies. If you change the frequency, the 1 PPS also
changes frequency.
Ed
On 11/24/2012 10:53 AM, James Peroulas wrote:
I received a 'programmable' FE-5680A from nichegeek recently and I'm able
to get it to lock (pin 3 goes low) and produce a PPS output (pin 6).
However, it never produces a 10MHz output on pin 7.
Is this unit defective, or is there something I might be doing wrong?
My unit is labeled: FE-5680A UN 32575 S/N 45531 Revision: B. It's pretty
banged up too, like someone took a drill to it :(
James
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