Installation and Startup
Rev. 2 January 2021
19
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Note: If the antennas are located away from the router, keep the cables as short as possible to
prevent the loss of antenna gain. Route the cables so that they are protected from damage and will
not be snagged or pulled on. There should be no binding or sharp corners in the cable routing.
Excess cabling should be bundled and tied off. Make sure the cables are secured so their weight
will not loosen the connectors from the router over time.
Figure 2-7: Antenna Connectors
Recommended Antenna Separation
The recommended antenna separation is related to the band frequency/wavelength. To
accommodate the shortest frequency/longest wavelength band supported by the LX40,
Sierra Wireless recommends a minimum antenna separation of 214 mm for best results,
and if necessary, a separation of 107 mm for acceptable results.
Step 4—Connect the Data Cables
The LX40 has the following ports for connecting data cables:
•
(Micro-AB)
•
(RJ-45)—Use a Cat 5e or Cat 6 Ethernet cable
Step 5—Connect the Power
The AirLink LX40 comes with a 3 meter (10 ft.) DC power cable. You can also purchase
an optional AC adapter.
Cellular antenna connector
Diversity antenna connector
Wi-Fi antenna connector
Table 2-1: Frequency / Wavelength Range and Recommended Antenna Separation for the
AirLink LX40
Service
Wavelength Range for LX40
Frequency
(MHz)
Wavelength
(
) (mm)
Best Antenna
Separation (mm) (1/2
)
Good Antenna
Separation (mm) (1/4
)
LTE
Longest
700
428
214
107
LTE
Shortest
2600
115
58
29