Sierra Wireless AirLink GX450 Hardware User's Manual page 9

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Note: The GPS antenna connector has a bias output and Sierra Wireless recommends that you use
an active antenna for better sensitivity.
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Note: For 3G networks, the second antenna operates as a diversity antenna, providing a second
receive path. For 4G networks, the second antenna operates as a MIMO antenna, providing a
second receive path and a second transmit path.
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Rev. 11 July 2019
GPS Antenna Connector – This connects an optional GPS antenna to the gateway.
(SMA connector)
Diversity/AUX Antenna Connector – This connects an auxiliary antenna to the
gateway for backup reception capability. (SMA connector)
Ethernet Connector – This RJ-45 connector connects a standard Ethernet cable to
the gateway. This is used to connect a Windows PC to the gateway for configuration
and diagnostic purposes or attaching Ethernet equipment to the gateway.
Power Connector – This connects power to the gateway and provides additional
inputs and outputs for the control and monitoring of external devices as well as
triggering the low power mode. For more information on its operation and use, see
Connecting a DC Power Cable
There are two types of optional power cables available from Sierra Wireless:
· An AC adapter (usually used for indoor, fixed applications where the gateway runs
off line power)
· DC cables (usually used in vehicles or other installations where the gateway runs
off battery power)
The gateway automatically starts when it senses qualified power on the power con-
nector.
Serial Port – This 9-pin connector provides standard RS-232 communication with a
standard straight-through serial cable. It is used to communicate with industrial
machines like motors, computers or controllers or for connection to a computer to
configure the gateway with AT commands. It also supports features like TCP PAD
and UDP PAD. For more information, see
USB Port – This Micro AB connector accepts Micro A and Micro B plugs. You can
use a connected Windows PC to monitor and configure the gateway.
When connected to a PC, the USB port becomes either a:
· Virtual Ethernet port (default)
· Virtual serial port
For information on configuring the USB port, refer to the ALEOS Software Configura-
tion User Guide. The ALEOS Software Configuration User Guide and Windows drivers
for this port are available at
source.sierrawireless.com/resources/airlink/software_downloads/airlink_usb_driver/
When using the USB port:
· Use a USB 2.0 cable
· Connect directly to your computer for best throughput
Introduction to the AirLink GX450
on page 32.
Serial Port
9
on page 36.
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