The "bad" temperature sensors can have a rather dramatic effect on the tbolt
output, particularly if you are even remotely time-nutty. Their disciplining
algorithm seems to use it as a rather important number.
And the "bad" sensor is rather useless if you are trying to use Lady Heather to
stabilize the temperature of the unit. The "good" sensor allows temperature
control to a few millidegrees absolute, with longer term averages in the low
tens of microdegrees using just a cardboard box and fan.
With nutty level attention to all the details and potential sources of
disturbance (temperature, power, signal, location, disciplining, moon phase,
gerbil alignment, etc) you can coax E-13 level stability out of these things.
Not too shabby for a $100 box originally meant for microsecond level timing.
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