Instruction manual

Model DCP-NextG Digital Cell Phone Kit
16
7 SAM3G+ Configuration
7.1 Hardware
As discussed above, the modem can be powered in a number of ways. The power supply
wires can be connected directly to battery terminals, to the logger 12V or SW12V supplies or
to some external relay circuit. If the modem is to be switched on and off via a relay or the
SW12V supply of a data logger, the control of switching the power supply on and off can be
performed by the user program in the data logger. See the data logger manual for details of
using the switched 12V supply.
For most situations, a 3dB antenna will be suitable for remote operation. In low signal areas
however, a 6.5dB antenna may be necessary.
The Intercel SAM 3G+ is supplied with a mounting bracket for connection to environmental
enclosures. The modem can be easily removed from this bracket if necessary. This bracket has
been modified to suit Campbell Scientific enclosure backplanes.