Il 2013-01-15 00:08 Fabio Eboli ha scritto:
Trying to be more clear:
10MHz period error (vs. GPS) changed from -0.8x10^-10 soon after
the trim, to +1x10^-10 after two days (top right).
Top right is change of phase in time, i.e. period error
measured using GPS as reference.
The OCXO period was rising from almost 2x10^-15 soon after the
trim to 1.3x10^-15 after two days (bottom left).
Bottom left is change of period error in time,
1.3x10^-15 per second is around 1.1x10^-10 per day,
if I'm not mistaken, more than typical unit's aging
stated by datasheet.
Seem the stabilization will take a while...
Fabio.
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