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Section-3 Operation

October 17, 2013

3‐82

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

3.8.8 StatusScreens‐ATSCModulator

Figure 3-76 LPU ATSC Status Screen 1

Table3‐72XmtrHome>ExciterHome>Status>BatteryBackup

Field Explanation

UPSState StatusisEnabledorDisabled.ThisisaninputfromthetransmitterI/O.Itisusedtodisable

thebackupbattery.Theinputforthiscontrolispin9oftheTransmitterInterface

Connector,whichisfoundonthetransmitterI/Oboardoption.Thebatterybackupcanbe

disabledbyad

ditionofaconnector/jumperdescribedinFigure2‐10onpage2‐15.

UPSMode IndicateseitherOnBatteryorMainsOK.

ManufactureDate Datebatterywasreleasedbymanufacturer.

ExpirationDate Batteryisconsideredexpiredifthissixyearexpirationdatehaspassed.

CycleCount Numberofcharge/dischargecycles.Replacebatterywhen2000countisr

eached.

SoftwareVersion Softwareversionreadfromchiponbatterypack.

+12VDCBattery Afaultoccursifthe+12voltoutputdropsto+10volts.

Note:The+9.6voltoutputofthebackupbatteryisconvertedto+12VDC.Thefaultoccurs

whenthe+9.6VDCdropsto8.3VDC

Table3‐73XmtrHome>ExciterHome>Status>ATSCModulator(screen1)

Field Explanation

PrimaryASI

Greenifpr

esent.Rediffaultedorabsent.

Iftr

ansportstreaminputispresent,butarenotselectedfortransmission,itsindicatorswill

beyellow.Typically,onlytwoinputsusedatatime.SeeSection2.9.5onpage2‐10to

determinewh

ichtwoinputswillbeused.

PrimarySMPTE

AuxiliaryASI

AuxiliarySMPTE

MPEGPa

cketsinBuffer

IncomingMPEGda

taisstoredinaFIFObuffer.ForMFNoperation,theusualFIFOmid‐

bufferdepthis1304packets.InSFNoperation,thenumberofpacketsheldinthebufferis

dependentontheemissiontimingrequirements.Ineithercase,thenumberofpacketsin

thebuffershouldbere

lativelystable.

MPEGSy

ncLostCount

Numberoftimestheexc

iter'sinputcircuithaslostsynchronizationwiththeincoming

MPEGsynctotheextentthatthecircuithaderrorsandhadtoreacquire.

M/HDat

aPresent

YesorNo.Iftheexc

iterhasMDTVmodeenabled,thiswillindicatewhetherornotmobile

DTVisindeedpresentinthetransportstream.

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