Sierra Wireless AirLink GX400 Installation Manual page 2

Front Panel
The following are located on the modem's front panel:
Reset button Press to reset the modem using its current settings. Press and hold for 10 seconds to reset the modem
to its factory defaults. When you press the reset button all LEDs display solid red.
LEDs Modem status indicators
Network
Red (solid)
Red (flashing)
Yellow (solid)
Yellow (flashing)
Green (solid)
Green (flashing)
Signal (cellular network's signal)
Red (solid)
Red (flashing)
Yellow (solid)
Green
Activity
Off
Power
Off
Green (flashing)
Red (solid)
Yellow (solid)
Green (solid)
Green w/ yellow flash
Rear Panel
Your setup will use only the following ports on the rear panel.
Cellular port Connect cellular antenna cable
GPS port Connect GPS cable antenna
Diversity/AUX port Not used in this installation
USB port Connect directly to laptop via USB cable to configure modem (AgJunction does not provide the
cables or software for this functionality—contact Sierra Wireless for more information)
Serial port Connect directly to laptop via serial cable to configure modem (AgJunction does not provide
the cables or software for this functionality—contact Sierra Wireless for more information)
Ethernet port Connect AgJunction Link or other components for communication to this port
DC Power Connect gray power cable
Sierra Wireless AirLink GX400 Modem Installation Guide
Note: Non-WiFi version shown at left. WiFi
version includes antenna port on front of unit
with detachable antenna—see page 1 for photos
of port.
No cell network
Attempting to connect to cell network
Cell network found, modem attempting to connect to network
Cell network not available
Connected to the cell network
Device in roaming mode
Bad signal
No signal
Marginal signal
Good signal
No activity of transmitting or receiving
No power or input voltage detected 36 VDC or 9 VDC
Radio is transmitting or receiving
Device is not operational (Low power mode)
Device is entering low power mode or system is booting
Device is connected to correct voltage and operating correctly
Device had GPS fix
2 876-0238-000 Rev A1