AirLink LX40 Series Hardware User Guide
Rev. 2 January 2021
18
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Step 3—Connect the Antennas
Warning:
This router is not intended for use close to the human body. Antennas should be at least
8 inches (20 cm) away from the operator.
Avertissement :
Ce routeur n'est pas destiné à être utilisé à proximité du corps humain. Les
antennes doivent être à au moins 20 cm de toute personne.
The LX40 has two SMA female antenna connectors:
•
Cellular antenna connector: Primary receive and transmit antenna connector
•
Cellular Diversity antenna connector: LTE MIMO and 3G Diversity
The AirLink LX40 with Wi-Fi also has:
•
One reverse polarity SMA male connector for the Wi-Fi antenna.
Sierra Wireless recommends cabling out the antenna.
The LX40 supports 2.4 GHz (2400–2500 MHz) and 5GHz
(4900–5900 MHz) Wi-Fi bands. See
on page 42 for more
information.
For regulatory requirements concerning antennas, see
Note: The antenna should not exceed the maximum gain specified in
on page 54. In
more complex installations (such as those requiring long lengths of cable and/or multiple connec-
tions), you must follow the maximum dBi gain guidelines specified by the radio communications
regulations of the Federal Communications Commission (FCC), Industry Canada, or your country’s
regulatory body.
To install the antennas:
Note: Take extra care when attaching the antennas to the SMA connectors. Finger tight
(approximately 0.6–0.8 Nm 5–7 in-lb.) is sufficient and the max torque should not go beyond
1.1 Nm (10 in-lb.).
1.
Connect the cellular antenna to the SMA cellular antenna connector.
Mount the cellular antenna so there is at least 20 cm between the antenna and the
user or bystander.
2.
Connect a second antenna to the SMA diversity antenna connector.
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 sec-
ond receive path and a second transmit path.
3.
For Wi-Fi-capable routers, connect the Wi-Fi antenna to the SMA Wi-Fi connector.