Specifications

Section-3 Operation
October 17, 2013
3‐24
Copyright©2013,HarrisBroadcast
WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004
Figure 3-25 LPU System Configuration Screens
Table3‐16XMTRHome>LPUHome>Config>&>Next(Page2)
Field Explanation
FwdPwrThr
eshold
Settheminimumforwardpowerinwatts(W)belowwhichawarningisindicated.Ifthe
transmitteroutputpowerdropsbelowthislevel,theForwardPowerBarandOutputLEDwill
turnYellow.
MaxFw
dPower
Setthemaximumforwardpowerinwatts(W)abovewhichafaultisindicated.Ifthetransmitter
outputpowerexceedsthislevel,theForwardPowerBarwillturnRed.Thisvaluemustbelarger
thantheNominalPowerOutput.
NominalPowerOutput
Thisen
trysetsthemaximumlevelthattheFwdPowerReferencecanbesettoinwatts(W),and
alsosetsthe100%ForwardPowerBarlevel.
FwdPo
werReference
Setthedesiredforwardpowerofthetransmitterinwatts(W).TheFwdPowerReference
settingislimitedbytheNominalPowerOutputsetting,thusthevalidrangeforthiscontrolis0‐
NominalPowerOutput(W).
ActualFw
dPowerRef
Thisfieldre
presentstheactualpowersettingintheLPU.Theactualpowersettingcanbe
reducedfromtheFwdPowerReferencesettingduetoanyofthefollowingreasons:
‐Theva
lueofthe%ofFwdPwrReferencesettingislessthan100%.
‐Thenumberofmissing/faultedPAshasreducedthemaximumoutputpowerofthesystem
belowtheFwdPwrReferencesetting.
‐Th
ereexistsapowerfoldbackduetoahighlevelofreflectedpoweratthe 
transmitteroutput.
Note:TheLPUfa
ultlogmayprovidethereasonforthepowerreduction.
%ofFwdPwrRe
ference
Setthepe
rcentageofactualtransmitteroutputpower.(Validrange0‐100%)IftheFwdPower
Reference=1000W,andthe%ofFwdPwrReference=75%,thentheactualforwardpower
referencewillbe750W.
ACFa
ilwithUPS
Choicesare3‐Str
ikeOff(transmittertriestorestartthreetimesandstopstryingafterthefourth
tryifACisnotrestored),orAlwaysRestrike(transmittertriestorestartunti lACisrestored).
SystemConfig‐Pa
ge2
ReflectedPo
werF/B
Thisisthele
velofreflectedpowerinwatts(W)thatifexceededwillactivatepowerfoldback.
(Thisisastatusonlyfield).
Foldback
PercentagethatSystemOutputPowe
riscurrentlybeingfoldedbackduetopresenceofhigh
reflectedpowerconditions.