Sierra Wireless MP 880W Guía de usuario Pagina 29

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Hardware and Software Installation
Rev 1.5 Jul.08 29
Youcanalsouseagroundscrewontheconnectorpanelofthe
MPmodem.Usea 16gaugewireifyouchoosetouseaground
screw.Agroundscrewisnotrequiredaslongasthepower
harnessisproperlygrounded.
Figure 3-4: The ground screw connector on the connector panel.
Note: Tighten cables connected
to the MP modem by hand. Do
not use tools.
Step 2 Mount the antennas and install
the cables
TheMP880WmodemhasoneMainRFantennaconnectorand
oneGPSantennaconnector.TheMP595Whas anadditional
RFantennaconnectorforanAPantenna.TheMPmodem
requiresanRFantennatoconnecttothewirelessnetwork.
ThebuiltinGPSmodulerequiresadedicatedGPSantennaor
acombinationantennawithcablestoboththeMainRF and
GPSantennaconnectorsontheMPmodem.
IfyoualreadyhaveanMPmodemcombinationGPSantenna,
youcanreuseitwithyournewMPmodem.This antennahas
twoleads
oneforMainRF(TNCconnector)andone forGPS
(SMAconnector).
Main RF antenna
Useanapproved MainRFantennatoconnecttothewireless
network.Theantennamusthave50
ohmsimpedanceanda
cablewithaTNCconnector,aswellasthefollowingcharacter
istics:
Thetotalmaximumgain,includingcableloss,mustnot
exceed4
dBi(iftheantennaoperatesonthePCSband)or
5
dBi(iftheantennaoperatesonlyontheCellularband).
Theantennamusttransmitandreceiveonthenecessary
frequencybandsinyourcoveragearea.TheMPmodem
supportstheseRFbands:
· HSUPAandUMTSnetworks:
· 850MHz
· 1900MHz
If you are using a ground screw,
Power
I/O
insert it here.
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