Sierra Wireless MP 881W, Руководство пользователя

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MP881W Modem User Guide
24 2130808
· 2100 MHz
· EDGE and GPRS networks:
· 850 MHz
· 900 MHz
· 1800 MHz
· 1900 MHz
If your MP modem will only be connected to networks that
use one of the bands, an appropriate single ‐ band antenna
is sufficient. Contact your service provider for information
about radio bands used in your area.
• Access point antenna. The 2.4 GHz AP antenna connects to
the AP antenna connector on the rear of the MP modem.
For more information about antennas for your installation
contact your account manager.
GPS antenna
The GPS antenna connects to the MP modem using a male
SMA connector. Contact your account manager for more infor ‐
mation about compatible GPS antennas.
AP antenna (MP 881W only)
The AP antenna must be installed by an RF professional. The
AP antenna connects to the MP modem using a reverse
polarity male SMA connector.
Note: The WiFi antennas
approved for use with this device
must be of either a PCB omni
antenna with a gain of no more
than +2 dBi, or a dipole antenna
with a gain of no more than
+5dBi. No other antennas are
approved for use with this
device.”
Antenna locations
When selecting locations for the Main RF, GPS, and AP
antennas:
• Refer to the documentation provided with each antenna to
determine whether it requires a ground plane.
• Ensure that the Main RF antenna is mounted at least 20 cm
(8 inches) from vehicle occupants and bystanders.
• Ensure that all radio antennas (Main RF, GPS, CB radio,
car radio) are mounted at least 20 cm or more apart (30 cm
recommended).
• (MP 881W only) Ensure that the AP antenna is mounted at
least 20 cm from the Main RF antenna.