[time-nuts] NTGS50AA glitches
danrae at verizon.net
Tue Jun 12 23:19:20 UTC 2012
On 6/12/2012 2:48 PM, Mark Sims wrote:
> I saw a similar DAC jump when I replaced the SMB pigtail to my board. The unit went into a brief holdover and came out with a shift in the dac vaue. I would try wiggling the coax connection (without moving the board) and also gently tapping around the board (maybe start with the oscillator can) with a screwdriver handle to see if anything causes an upset.
Interesting. I just picked it up gently and rotated it through 90
degrees. This has produced another 1.5 mV DAC step and corresponding
temporary jumps in the PPs and Temp traces.
I seem to recall much bigger effects than this when adjusting ovens like
the 10811 which I always would try to adjust in the orientation that
they were to be finally used in, so I really shouldn't be surprised.
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