User's Manual

36 M3090 Integrator’s Manual
Doc.no: 198 17 - KRD 102 303 Uen, Rev B
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Normally, no special measures are needed to cool M3090 radio modems.
However, if ambient temperature exceeds +65 C (see &KDSWHU .), cooling
will be required, otherwise the modem may over-heat and lose contact with the
network.
The heat dissipation of an M3090 radio modem varies depending on the volume
of data being transmitted. In normal use, when the modem transmits less than
1% of the time, the power consumption is less than 300 mW.
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The M3090 radio modem card does not need to be grounded beyond what is
provided through the system connector.
However, it is recommended that the antenna connector be grounded, by
grounding the fixing screws. This will:
• improve the gain of the antenna;
• make the radio modem less sensitive to electrostatic discharge (ESD).
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M3090 radio modems are sensitive to electrostatic discharge. Use normal
precautions to prevent ESD.
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M3090 radio modems fulfil the shielding requirements set by the regulatory
approval authorities in the USA and Canada. Therefore, additional shielding of
the modem is normally not necessary.
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