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Section-3 Operation

October 17, 2013

3‐90

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

3.8.11 StatusScreens‐DVB‐T2Modulation

Figure 3-84 LPU DVB-T2 Status Screen 1

Table3‐81XmtrHome>ExciterHome>Status>DVB‐T2Modulator(screen1)

Field Explanation

ActiveStr

eam DisplaysActiveTransportstream.

ASIInp

ut IftheASIinputispresentwithnoerrors,agreenboxwiththewordPRESappearsunder

thelabel.Theareaunderthelabelremainsbluewith‐‐ifinputisabsent.

Bitrate(Mb/

s) DisplaystotaltransportstreambitrateforeachASIinput.

SwitchEl

apsedTime(s) Displaystimeelapsedsinceswitchover.

SwitchC

ount Displaysthenumberofswitchoverssincelastreset.

TimestampTy

pe IndicatesmechanismforsynchronizingoutputoftransmitterssignaledbyT2gateway(see

TS102773section5.2.7).OnlyrequiredinT2MImode.

Relative=time

stamponlycontainstimeofemissionrelativetonext1PPS(subseconds)

Absolute=timestampincludesabsolutetimeofemission

Null=timestamppacketdetected,butnotimingalignmentrequired

N/ A=notimestamppacketrequired/detected(MPEG‐TSmode)

ProcessingTi

me Internalprocessingdelayofmodulator.ThisvalueisusedinplanningofSFNnetwork

timing.ProcessingtimeisdelayfromreceptionofL1packet(endofT2frame)attransport

inputtoI/QdatareadyintoSFNdelaymemory.

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