[time-nuts] FE-5680A arrived

[Joseph Gray]

The first power supply I used couldn't provide enough current for the
startup of the heater, so I had to dig out another. After fixing that
issue, the first rubidium unit locked very quickly. For initial
testing, I'm using a scope, triggered on my HP Z3801A. After several
minutes of warm up (I didn't time it), I detect no drift in the
rubidium's 10 MHz at all. I do see a bit of jitter and some "bumps" on
the peaks of the sine wave.

I'll cook this one for a while and then try unit number two.

Joe Gray
W5JG