Guralp Systems CMG-DM24S12AMS - Manual (Page 53)

CMG-DM24S12AMS Operator's guide
Power
The power module can convert power supplied from several sources
into a supply suitable for running the system. The same power supply is
normally used for running the DM24S12AMS, the GPS unit, and any
sensors attached to the module. If you prefer, however, you can attach
separate 12 V DC power supplies to any external unit.
Whilst sufficient mains (110 – 230 V) or 12 V DC power is supplied to the
DM24S12AMS, you can also trickle-charge a battery connected to the
BATTERY/UPS socket. To do this, you will need to use a cable which
connects both positive and charging pins of the socket to the same
terminal of the battery (see the Appendices for more details.) For
example, you might want to connect the DC INPUT socket to a solar
array or other intermittent power source, whilst keeping a rechargeable
battery attached to the BATTERY/UPS socket to use when power is
unavailable.
GPS
The CMG-GPS2 Receiver Unit comprises an antenna, the GPS receiver
electronics, wide range input isolated DC power supply and output line
drivers.
The antenna and all the associated electronics above are housed inside a
specially-designed enclosure. The enclosure is sealed with O-rings and
manufactured from a hard rigid resin. It is a stand-alone unit requiring
only one cable connection to the DM24S12AMS, which carries both
signals and power.
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