Sierra Wireless airlink es440, Руководство пользователя по оборудованию, Страница: 32 / 50

AirLink ES440 Hardware User Guide
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• SNMP—SNMP trap reporting and MIB tree parsing
Refer to the ALEOS Software Configuration User Guide for more information
or go to
www.sierrawireless.com/en/Support/Downloads.aspx for a soft copy.
Antenna Recommendations
Note: Do not remove the secondary antenna. It helps the ES440 achieve the maximum
network coverage. The ES440 works without one installed, but with reduced network
coverage.
Note: If the antennas are located far away from the ES440, keep the cables as short as
possible to prevent the loss of antenna gain.
Warning:
The antenna should not exceed the maximum gain specified in Maximum
Antenna Gain (Gain D'antenne Maximal) on page 41 . In more complex installations (such
as those requiring long lengths of cable and/or multiple connections), you must follow the
maximum dBi gain guidelines specified by the radio communications regulations of the
Federal Communications Commission (FCC) or Industry Canada or
your country’s
regulatory body (if used outside the US). Also see Important Information for North
American Users on Radiation Exposure on page 40 for more information.