Guralp Systems CMG-DM24S12AMS - Manual (Page 63)

CMG-DM24S12AMS Operator's guide
1. If required, make a screening box for the sensor, to shield it from
draughts and sharp changes of temperature. A suitable box can
be constructed from expanded polystyrene slabs (e.g. 5 cm
building insulation slabs) with sealed joints between them and a
hole drilled for the connector. You can then use high-grade glass
fibre sealing tape to fix the leads in position, and fasten the box to
the mounting surface. Commercial duct sealing tape is ideal.
2. Connect the sensor to one of theCH 1 – 12 analogue inputs of the
DM24S12AMS using the cable provided, or one made up as
described in “Electrical connections” in Section 5.2 .
Centring the 5U
Once installed, you should centre the instrument ready for use. The
offset can be as much as the entire output range of the accelerometer,
which corresponds to around 1 degree from the horizontal or vertical.
1. Turn on the DM24S12AMS unit, and find the data stream
produced by the 5U sensor.
2. Remove the pressure release cap and insert a thin screwdriver or
pot-adjuster into the hole.
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