[time-nuts] New 5370A

[Bob Stewart]

I got a new 5370A, so of course I've been running a bunch of tests on it.  In the image linked below, the start channel is my PRS-45A, the stop channel is my GPSDOe ("e" is for engine) and the ARM channel is fed by the PPS from my SSR-6Tru.  As you can see in the notes, the test parameters are all the same, except for the clock source for the 5370A.  As you might guess, my question is about the blue line, which is where the 5370A uses its internal 10811 as its clock reference.  Is it normal for tests run like this to have the left side of the ADEV be such a "wiggle" on the internal reference?  I had noticed the same thing with the 5335A I've been using up till now and had just assumed there was a problem with its 10811.  The OCXO in my GSPDO is a surplus Trimble 34310-T.  It's been running for several weeks, but is still in retrace.

http://evoria.net/AE6RV/5370A/Test1.png

And kudos to John for Timelab.  It doesn't play well with Wine in Linux, but that's not terribly surprising, all things considered.

Bob