Guralp Systems CMG-3TB - Manual (Page 14)

CMG-3TB
connectors. Ensure that each is connected to its correct
counterpart.
hole lock unit at an angle above the horizontal sensor and join
the connectors. Ensure that each is connected to its correct
counterpart. The wires are fairly short, so you will need a
second person to hold the instrument whilst you connect them.
Take care not to scratch the other components when attaching
the connectors.
5. Align the hole lock unit with the NORTH mark on the
horizontal sensor housing. Doing this will allow you to check
the approximate orientation of the sensors at a glance.
The horizontal sensor consists of two distinct units (the
north/south and east/west components), which are supplied
already joined together with M3 × 8 cap screws. You should not
need to undo this connection.
If you do separate the north/south and east/west components,
make sure that both the signal cable and, if present, the pass-
through to the key switch (red and green, held in the
photograph below) are reconnected when you reassemble the
instrument.
14 Issue C