[time-nuts] Datum FTS 4065B Plot
brooke at pacific.net
Wed May 14 11:40:34 EDT 2008
I've been looking at the 4065B Cesium standard vs. GPS this month. After the
plot showed a slope of 472E-15 the frequency offset was changed from zero to
472 on 8 May (gambling on the sign). For the next couple of days the points
all were in a box 20 ns high. BUT then the slope changed. It's now got a
positive slope that's very close to 472E-15 and the frequency offset is at 472
not zero. See attached plot.
What might be causing this? For example the 4065B is just sitting on a chest
of drawers and might be moved or rotated a little from time to time. Is there
a requirement that it be in a temperature controlled room on a concrete pillar
to get into the E-14 area?
It just turns on better than 5E-13 and the attached plot seems to indicate that
it and be manually adjusted to parts in E-14 but so far I've not been able to
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http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Web Cam
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