iR1200 Modem
24
Mounting GPS Antenna (optional)
The iR1200 GPS Enabled modem comes equipped with a connector for a GPS antenna.
The following GPS antenna can be used with the iR1200 Modem:
1
39265-50 - Trimble Magnetic Mount Antenna
The following table contains the steps for mounting a GPS antenna.
1
Use an antenna suitable for the GPS of frequency (1575 MHz) with
an MCX connector and matched for 50-ohm impedance.
2
Locate the antenna to allow as free a radiation pattern as practical.
3
Insert the male connector of the GPS antenna cable to the GPS ANT
jack (refer to Figure 3 – Rear Panel Layout).
NOTE: Because of the operating frequencies involved with GPS signal, splicing or
using adapters to extend the length of the antenna coaxial cable is not
recommended and will likely prevent the system from operating properly.
We recommend that a single length of coax without splices or adapters be
used.
Power Cable Installation
The iR1200 modem is designed primarily for mounting inside a vehicle and is activated
(turned ON) when an ignition signal is sensed. When used in a stationary application, an
ignition signal does not exist. To simulate an ignition signal, an ignition sense short plug
must be used (see accessories section for part number).
Figure 6 – Continuous Power for Stationary Installation
iR1200
IGNITION
POWER
IGNITION
BYPASS
PLUG
120VAC
POWER
SUPPLY
MODEM
ANTENNA
GPS ANTENNA
(OPTIONAL)
