User guide

AirLink GX400 HSPA+ User Guide
28 2140712
If the AirLink GX400 is used in a vehicle or battery-operated application, the red
wire should be connected to battery power and the black wire to ground. The
white low-power timer enable input wire must be connected to either unswitched
or switched power for the GX400 to operate. The AC adapter accessory for the
GX400 has power on two pins: main power and low-power timer enable. See the
“Power Modes and Information” section in Chapter 5 for additional information on
the various low-power modes available when using the GX400.
The battery cable used for a car, truck, or other mobile connection must be less
than 3 meters in length.
The AirLink GX400 has an internal polysilicon circuit breaker and reverse polarity
protection.
Figure 3-4: AirLink GX400 Power Connector
Warning: Explosion Hazard - When the device is located in a combustible atmosphere,
do not connect or disconnect the AirLink GX400 unless power has been switched off.