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Section-3 Operation

October 17, 2013

3‐8

WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004

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

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

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