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Connecting the GSM Antenna (only GM series)
3.4
Connecting the GSM Antenna (only GM series)
First of all find a suitable location for mounting the GSM antenna outside of the control cabinet. In
order to find a suitable location with a good reception quality you may use the software MX
Mitsubishi Alarm Editor to display the signal quality.
Screw the antenna plug into the antenna socket on the front of the modem.
-
NOTES
Standard GSM antennas with an FME plug can be used. The GSM antenna is not supplied
with the modem and can be ordered separately.
Ensure that you buy an antenna with the correct frequency range for your mobile communi-
cations network. Further information on this is provided in the Appendix of this manual in
section 10.4, Mobile communication networks in Europe, USA and worldwide.
If the length of the antenna cable is not sufficient for your requirements you can use a suit-
able extension cable purchased as an accessory from a GSM outlet. Take into account the
attenuation of these cables that will reduce the antenna gain and observe the relevant speci-
fications of the manufacturer.
3 - 5
Anten na
Servic e
Modem Mode
Data out
Line
Process
Power
SIM-Ca rd
Push
COM1
+
COM2
Installation and Mounting
Fig. 3-6:
When fitting the antenna plug ensure
that it is seated correctly. It should be
possible to turn the threaded nut easily.
MITSUBISHI ELECTRIC
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