Sharp SD-AT1000W Especificaciones descargar pdf (Pagina 96)

Section-3 Operation

October 17, 2013

3‐28

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

DuringnormaloperationtheLPUwillautomaticallyusethecalibrationsetthatisclosesttothecurrentfrequency

setting.IfnostoredcalibrationdataforFactoryForwardorReflectedPowercalibrationexists,afaultwillbelogged,

causingtheexcitertomute.SystemCali

brationisdiscussedindepthinSection5.4,DigitalPowerCalibrations,on

page5‐8.Ref

ertothatsectionforthecompleteSystemPowerCalibrationprocedure.

3.6.6 LPUExciterHomeScreen

Figure 3-28 LPU Exciter Home Screen

Table3‐19XmtrHome>ExciterHome

Field Description

PerformanceW

indowandSystemOutput:Notavailableforanalogmodulation.Performanceparametersdisplayedwillvary

dependingonmodulation.TheonairperformancedatacomesfromthePostHPFsampleandisnotswitchable.Ifthesampleis

notpresentthegraphwillnotbedisplayed.

LSB

Indicatesthelow

ersidebandintermodulationproductlevel,indB,attheshoulder(first0.25MHzinto

theloweradjacentchannel).ATSCshoulderswillbe11.2dBhigherthanshownonthescreen.

USB

Indicatestheuppersidebandintermodulationproductlevel,indB,attheshoulder(first0.25MHzinto

theUpperadjacentchannel).ATSCshoulderswillbe11.2dBhigherthanshownonthescreen.

SNR Signaltonoiserat

ioindB

EVM Errorve

ctormagnitudein%

ExciterSt

atusWindow

TransmitterFr

eq.(Hz) ExactfrequencyoftransmitterinHertz

Main/Standby

Thisfieldi

ndicatestheon‐airstatusoftheLPU.Inadualdrivesystem,theactiveLPUwilldisplayMain

(greenfield).TheinactiveexciterwilldisplayStandby(inblue).

Mute/MUTE

Thisfieldindi

catesthemutestatusoftheexcitersection.IftheLPURFOutputismuted,thisfield

displaysMUTE(uppercase,redfield).Iftheoutputisnotmuted,thefielddisplaysMute(lowerca se,

greenfield).WhentheUAXtransmitterisswitchedOFF,theMUTEfieldwillbered.

OK/WARNING/FAULT

Thisfieldindi

catesasummarystatusoftheLPUexcitersection.Ifnowarningsorfaultsexistwithin

theexcitersection,theindicationdisplaysOK(greenfield).Whenanexciterparameterapproachesits

limit,thefieldsdisplaysWARNING(yellowfield).Ifafaultoccurswithintheexciter,thefielddisplays

FAULT(r

edfield).

RT ACW

indowTheRTAC(RealTimeAdaptiveCorrection)sectionoftheExciterHomeScreendisplaystheoperatingmodeofthe

correctors.TheRTACsectionoftheExciterHomescreenisasoftkey.Whenselectedbyleftmouseclick,thefirstscreenofRTAC

Setupispresented.RefertoRTACSetupandFigure3‐34onpa

ge3‐33.

Linear

Correctoruse

sRFfeedbacksampletakenafterthehighpowerfilter.Usedtocorrectforfilter

distortionsinamplitudeandgroupdelay.

Section3.6onpage3‐20

Section3.7onpage3‐30

Section3.8onpage3‐73

Section3.6.7onpage3‐29

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Sharp SD-AT1000W Especificaciones Pagina 96

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