Specifications

Section-3 Operation
October 17, 2013
3‐60
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Figure 3-58 LPU DVB-T2 Setup Screen 6
Table3‐51XmtrHome>ExciterHome>Setup>DVB‐T2Modulator(screen6)
Field Explanation
PRBSEnabled
Choicesar
eYesorNo.WhenYesisselected,theexciterwilloutputRFwithouta transport
streaminput.WhenNoisselected,theexciterwillmutewithoutatransportstreaminput.
AddTSHe
ader
ChoicesareYe
sorNo.WhenYesisselected,avalidtransportstreamheaderispre‐appendedto
eachpacket.WhenNoisselected,aheaderisnotadded.
SFNP1Sy
mbolDeletion
ChoicesareYesorNo.SelectingyesclearstheP1symbol,whichallowscomparisonoftimingof
differenttransmittersinaSFN.
VerificationModePreset
Entervalueinwhitebox.Thesearepredefinedsetups
winchca
nbeappliedbyinputtingtheVerificationModePresetnumber.Presently,usable
VerificationModePresetnumbersare1‐17,and19,theseareSISO(singleinputsingleoutput
modes),mode18isMIMO(multipleinputsingleoutput).Table3‐53onpage3‐61through
Table3‐55onpa
ge3‐62providetheparametersforthenineteenVerificationModePresets.
VerificationMo
de
Enabled
Choicesar
eYesorNo.EnteringYesactivatestheVerificationModePresetentry.This
deactivatesthevariouseffectedentriesintheotherDVB‐T2setupscreens.EnteringNo
deactivatestheVerificationModePresetentryandactivatesthevariouseffectedentriesinthe
otherDVB‐T2setupscreens.
SingleTo
ne
PressingtheSi
ngleTonesoftkeyinthetestpatternsubwindowcausesasingletone,placedat
thecenterofthespectrum,tobetransmitted.Itisusedtomeasurethechannelcarrier
frequency.Thesingletonesignalisthesamepowerastheexciterisputtingoutnormally.
StopTe
st NormaltransmissionisresumedbypressingtheStopTestsoftkey.
Table3‐52ConstellationTypeandRotation
Modulation QPSK 16‐QAM 64‐QAM 256‐QAM
PhaseRo
tation(degrees) 29.0 16.8 8.6 3.576