User's Manual

FlexWave
®
Prism Remote Unit and RF Module Installation Guide FWPP-504-02
Page 72 © May 2017 CommScope, Inc.
Install the Prism Remote Unit
3 Connectalightningsurgesuppressortotheantennaport;torqueto8±1in-lbstoensurefullconnection.
NOTE: The lightning surge suppressor is included in the RF Module’s s
hipping container. Lightning surge
suppressor(s) are required anytime the antenna is mounted in an area in which the antenna is
susceptible to a lightning strike.
4 I
fthePRUhasaDual20WSMR800/PCS1900RFModule(FWP-441T841MOD),youmustinstallaFlexWave
NotchFilter(FWP-SPRINTFILTER)betweenthePRUandtheantennatoprovideprotectionfromspurious
emissionsinthePublicSafetybandbelow861.35MHzandtheCellularbandabove869.5MHz.For
informationonhowtoinstallaNotchFilter,goto"FlexWaveNotchFilter(FWP-SPRINTFILTER)”onpage114.
5 Ensuret
hatthechassisgroundwireisinstalledcorrectly(see"GroundthePRUChassis”onpage52).For
maximumprotection,thesystemgroundwiremustbeattachedtoalowimpedancegroundsystem.
6 Routethecoaxialantennac
ablefromtheantennatotheundersideofthePRU.
7 Cuttheantennacabletotherequi
redlengthandterminatewithanN-typemaleconnector.
8 Connect
theantennacabletothelightningsurgesuppressorortotheantennaport;apply15in-lbs(1.7Nm)
oftorque.
CAUTION! The antenna cable connections must be weather proofed (sealed) for outdoor installations.
9 Repeatt
heStep2throughStep8fortheremainingantennacables.
DETERMINE THE CIRCUIT BREAKER OR FUSE FOR THE PRU
UsetheinformationinthissectiontodeterminethecircuitbreakerorfusethatshouldbeinstalledintheAC
circuitbreakerboxortheDCPowerSourceDistributionPanel:
• AnAC
-poweredPRUsupportspowerinputfroma90to240Vacpowersupply.
• ADC-powere
dPRUsupportspowerinputfroma-40to-60Vdcpowersupply.