Guralp Systems CMG-3T - Manual (Page 30)

CMG-3T
4 Accessories
4.1 The breakout box
This unit separates the lines in the signal cable, so you can connect a
power supply, a recording system, and the hand-held control unit:
You can also use the breakout box to centre, lock and unlock the
sensor masses. You will need to provide power through the breakout
box's POWER connector to do this (see below.)
•
To unlock the sensor masses, hold down the ENABLE and
UNLOCK buttons simultaneously for 7 seconds. The BUSY LED
will light. All three masses are unlocked, each in turn. The
sensor then automatically moves on to centre the masses, during
which time the BUSY LED will flash. When the BUSY LED goes
out, the instrument is ready for use.
You should not attempt to move the instrument without re-
locking the masses.
•
To lock the sensor masses, hold down the ENABLE and LOCK
buttons simultaneously for 7 seconds. When the BUSY LED goes
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