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3004129-0001 Revision K
Indoor Unit (IDU)
The IDU provides all of the TE interfaces, plus the interface for
the antenna (ODU) and manages the communications over the
Inmarsat BGAN network. Communication to the ODU is
provided by the RF cable from the IDU.
Physical dimensions
IDU:
Size: 46 mm x 281 mm x 233 mm
Weight: 2.2 kg
RF cable: Coaxial LMR-195 or equivalent (<10 dB loss@
1.6GHz and 50 Ohm impedance), TNC connectors
Figure 1-2 9450 Indoor Unit (IDU)
Power port
The power port is the connection from the power supply (vehicle
battery or some other 12 or 24 Vdc power source) to the IDU.
The power cable has a +V power line, an ignition sense line and
a –V power line.
Table 2. Power port pin out
Line type
Pin number
+V power line
1
Ignition Sense
2
-V power line
3
