Guralp Systems CMG-CD24 - Manual (Page 69)

Operator's Guide
N/S 4 HZ 5 MINUTE SINEWAVE
E/W 10 MINUTE SQUAREWAVE
5.6.5 %AMPLITUDE
Syntax: percentage %AMPLITUDE
Sets the calibration amplitude to the given percentage of the full-scale
signal.
5.7 Actions
5.7.1 CENTRE
Syntax: CENTRE or CENTER MONITOR
Centres the sensor mass(es) of the instrument.
CENTRE returns immediately, whilst CENTRE MONITOR monitors the
progress of the unlock by displaying mass positions, as for LOCK
MONITOR (above).
When the masses are correctly centred, the mass positions should read
less than ±1000 counts.
5.7.2 %AUTO-CENTRE
Syntax: distance %AUTO-CENTRE
Instructs the CD24 to perform a round of centring whenever a mass
position drifts further than distance from zero. distance is
measured as a percentage of full scale.
Setting distance to zero disables automatic centring.
5.7.3 RESP
Syntax: value RESP
The CD24 provides a 1 second response mode for use when
monitoring mass positions or adjusting offsets. To enter this mode,
issue the command 1 RESP.
Once you have finished monitoring the mass positions, you can return
to broadband response mode by issuing 0 RESP.
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