Specifications

Section-3 Operation
October 17, 2013
3‐86
Copyright©2013,HarrisBroadcast
WARNING:Disconnectprimarypower priortoservicing. 888‐2693‐004

Figure 3-80 LPU ISDB-T Status Screen 2
Table3‐77XmtrHome>ExciterHome>Status>ISDB‐TModulator>Next(screen2)
Field Explanation
ISDB‐TMode ISDB‐Tmode(seeSection2.3ofARIBSTDB‐31).Willdisplaymode1,2or3.
GuardInterval
Displayonly,thisisthelengthoftheguardband,expressedasafractionoftheuseful
symboltime.Valuesare1/4,1/8,1/16,or1/32oftheOFDMSymbolLength.(s
eeSection
3.14.2ofARIBSTDB‐31).
PartialReception PartialreceptionflagYes=Partialreceptionavailable.No=Nopartialreception.
InputOverflow StatusofASI1andASI2.Green=OK.Red=overflow
ConvolutionalCoder
LayersA,B,andC.Green=OK,Red=Fault.ThisrepresentstheConv
olutionalCoderFIFO
underflowandoverflowfaultsforthethreelayers.
InterleaverLength LayersA,B,andC.FurtherinformationisprovidedinTable3‐12inARIBSTDB‐31.
Coderate
LayersA,B,andC.ThisistheConvolutionalCodingratesforthethreelayers.Display
choicesare1/2,2/3,3/
4,5/6, 7/8 .
ModulationType
LayersA,B,andC.Displayindicatesmodulationtypeforeachlayer;DQPSK,QPSK,16QAM,
64QAM.
NumberSegments
LayersA,B,andC.Thisdisplayindicatesthenumberofsegmentswhichareassignedto
layersA,B,andC.