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C Commands Summary
70 MiLLennium Command Descriptions Manual
CLOCKADJUST
All oscillators have some inherent drift. On the MiLLennium GPSCard, the clock and the PPS strobe have a 50 ns
jitter due to the receiver's attempts to keep the clock as close as possible to GPS time. This option is disabled by
entering CLOCKADJUST DISABLE. The jitter will vanish, but the unsteered and free-running clock will drift
relative to GPS time.
CLOCKADJUST must also be disabled if the user wishes to measure the drift rate of the
oscillator using the
CLKA/B data logs.
Note 1: Please note that, when disabled, the range measurement bias errors will continue to accumulate
with clock drift.
Note 2: This feature is to be used by advanced users only.
Syntax:
Example:
clockadjust disable
CLOCKADJUST switch
Syntax Range Value Description Default
CLOCKADJUST - Command
switch enable or disable Allows or disallows adjustment to the internal clock enable