Specifications

Section-3 Operation
October 17, 2013
3‐8
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Figure 3-8 TCU Hardware Control Pushbuttons
RefertoTC
UHomescreenFigure3‐10onpage3‐11.OntherightofthedisplayscreenarefiveLEDsthatprovide
subsystemst
atus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
in
formationwithouthavingtobefamiliarwithamenustructure.TheLEDsaredescribedinTable3‐4whichfo
llows.
Table3‐3TCUControlButtons
Button State s Explanation
PowerCon
trol Auto/Manual
Auto:Automaticpowerle
velcontrolactivated.ThetransmitterRFoutput
powerisheldtothelevelestablishedbytheFWDPWRREFsetting.
Manual:Thepowerle
velcanbemanuallyraisedorlowerusingthePower
RaiseorPowerLowerbuttons.
Remote Enable/Disable
Enablesordi
sablesremotecontrolofthetransmitter.
Enable:Thetransmittersystemcanberemotelycontrolledbyeithertheuser
parallelinterfaceortheremotewebinterface.
Disable:Thetransmitt
erwillonlyrespondtolocalcommandsissuedfromthe
variousfrontpanelcontrols.
Power Raise/Lower
Pressingrai
sewillincreaseRFpoweroutput.Lowerdecreasespoweroutput.
Caution:Theremaybeaslightlaginsystempowerle
velresponsetime.
Holdingbuttonsinmaycauseundesiredovershoots.
Drive(LP
U) A/B
SelectswhichLP Uisconnectedtothehi ghpoweramplifierstagesand
ultimatelythe antennaorsystemload.Thenon‐selected(re serve)LPU
isconnectedtoasmallRFdummyload.
DriveCon
trol Auto/Manual
Auto:Automa
ticLPUswitchoverisenabled.Thesystemwillselectthereserve
LPUintheeventofthefailureofthemainLPU.
Manual:Automa
ticLPUswitchoverisdisabled.Thesystemwillnot
automaticallyselectthereserveLPUintheeventofthefailureofthemain
LPU.
Transmitter ON/OFF
Switchestransmit
ter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transmitt
ersystemisswitchedoff.
SYSTEM