Specifications

Section-3 Operation
November 11, 2013
3‐4
Copyright©2013,HarrisBroadcast
WARNING:Disconnectprimarypowerpriortoservicing. 888‐2628‐300

RefertoTCUhardwarecontrolbuttonsinFigure3‐3.Ontheleftofthehardwarecontrolbuttonsar efiveLEDsthat
providesubsystemstatusinformation.Thesubsystemsare:DriveChain,PowerAmp,Output,PowerSupply,System.
TheStatusLEDslightamber(yellow)forawarningandredforafault
conditioninthetransmittersubsystems.The
LEDslightgreenifthesub‐systeminquestionisnormal(withoutfaults).Thisprovidesquicksub‐systemstatus
informationwithouthavingtobefamiliarwithamenustructure.TheLEDsaredescibedinTable3‐2which
follows.
Table3‐1TCUControlButtons
Button States Explanation
PowerControl Auto/Manual
Auto:Automaticpowerlevelcontrolactivated.ThetransmitterRFoutputpoweris
heldtothelevelestablishedbytheFWDPWRREFsetting.
Manual:ThepowerlevelcanbemanuallyraisedorlowerusingthePowerRaiseor
PowerLowerbuttons.
Remote Enable/Disable
Enablesordisablesremotecontrolofthetransmitter.
Enable:Thetransmittersystemcanberemotelycontrolledbyeithertheuser
parallelinterfaceortheremotewebinterface.3
Disable:Thetransmitterwillonlyrespondtolocalcommandsissuedfromthe
variousfrontpanelcontrols.
Power Raise/Lower
PressingraisewillincreaseRFpoweroutput.Lowerdecreasespoweroutput.
Caution:Theremaybeaslightlaginsystempowerlevelresponsetime.Holding
buttonsinmaycauseundesiredpowerovershoots.
Exciter A/B
SelectswhichM2Xexciterisconnectedtothehighpowerampli fierstages 
andultimatelytheantennaorsystemload.The non‐s elected(reserv e)
exciteris connectedtoasmal lRFdummyload.
Driver Auto/Manual
Auto:Automaticdriverswitchoverisenabled.Thesystemwillselectthereserve
predriver/IPAmoduleintheeventofthefailureofthemainpredriver/IPAmodule.
Manual:Automaticpredriver/IPAmoduleswitchoverisdisabled.Thesystemwill
notautomaticallyselectthereservepredriver/IPAmoduleintheeventofthefailure
ofthemainLPU.
Transmitter ON/OFF
SwitchestransmitterRFoutputonoroff.Built‐inswitchLEDsprovidefeedbackasto
ON/OFFstatusoftransmittersystem.
ONbuttonislitgreenwhentransmittersystemisswitchedon.
OFFbuttonislitredwhentransmittersystemisswitchedoff.
Table3‐2TCUStatusLEDs
StatusIndicator States SummaryStatus
DriveChain Green/Amber/Red
Thisisasummaryofthefollowing:
1.M2XexciterAandPredriver/IPAAStatus(OK,Warning,Fault)
2.M2XexciterBandPredriver/IPABStatus(OK,Warning,Fault)
3.ActiveM2XExciterorPredriver/IPASummaryFaultStatus(OK,Fault)
4.M2XexciterAMuteStatus
(Warningifmuted)
5.M2XexciterBMuteStatus(Warningifmuted).
PowerAmp Red/Amber/Green ThisisasummarystatusofthePoweramplifiermodules,(OK,Warning,Fault).
Output Red/Amber/Green Thisisasummarystatusofthetransmitterpoweroutput,(OK,Warning,Fault).
PowerSupply Red/Green ThisisasummarystatusoftheTCUpowersupplies.
System Red/Amber/Green
System–Thisisasummarystatusforthefollowing:
1.ExciterASystemStatus(OK,Warning,orFault)
2.ExciterBSystemStatus(OK,Warning,orFault).
3.TCUCommunicationfaulttoaboardontheTCUbackplaneinslots1‐6
4.TCUFrontPanelBoardcommunicationloss
5.TCUOnboardMCMA/DD/ALoopbackfault
6.TCUBoardConfiguration
Error(Boardisinthewrongslotnumber)
7.TCUMajorFault(ThetransmitterwillnotallowtheONcommand.Possible
reason:SystemSafetyInterlockfault)
8.TCUCommunicationslosstoaboardontheTCUbackplaneslots1‐6
9.TCUSystemSafetyInterlockOpen(Possiblecause:Emergencyoffactivated)