Sharp SD-AT1000W Specifikace stáhnout pdf (Strana 115)

Maxiva UAX

October 17, 2013

3‐47

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

Figure 3-46 LPU DVB-T Setup Screen 2

Table3‐35XmtrHome>ExciterHome>Setup>DVB‐TModulator>Next(screen2)

Fields Explanation

NetworkOperation

SelectMFN(MultiFrequencyNetwork)orSFN(SingleFrequencyNetwork).MFNmodeselects

operationinaMultipleFrequencyNetwork(transmittersondifferentfrequencies)whichdoesnot

requiresynchronizationwiththeothertransmittersinanetwork.SFNmodeselectsoperationin

SingleFrequencyNetwork(transmittersonsamefrequency)whichrequiressynchronizationwith

othertransmittersinanetwork.IfSFNisselectedaGPSantennaisrequiredandinternalGPSis

selectedonthePFRUsetupscreenfoundonFigure3‐33onpage3‐32.Thisappliestoevery

modulationmodethatsupportsSFN.

OutputProcessTime

Enteravalueinmicroseconds(uS).Timesettingsareusedtosynchronizethetransmissiontiming

forsinglefrequencynetworks.

MFN/SFNStaticDelay

ThisentryappearswhentheMFNorSFNnetworkoptionisactive.Therangeis‐

10000us...+10000uS.ThevaluecanbeenteredlocallyorcontrolledbyMIP.SeeTimeDelayPriority

(LocalorMIP)below.

TimeDelayPriority

ChoicesareLocalorMIP.Localusesalocallyenteredtimedelay.WhenMIPisselected,thetime

delayissentviatheMIPpacket,whichissentovertheSFNnetwork

MIPPowerControl ChoicesareOnorOff.Allowsnetworkcontroloftransmitterpoweroutput.

MIPERP

splayonly,indBmandwatts.Thisentry,aswellastheAntennaGainandXmtrOutputPower

entries,allowtheoperatortosettheERPoftheUAXtransmitterdrivensystemremotelybyavalue

sentintheMIPpacketfromSynchrony.

AntennaGain

EnterantennaGainindB.Thisentryallo

wstheERPforthisstationtobesetremotelybyvarying

thetransmitteroutputpower.

XmtrOutputPower Displayonly,dBmandwatts.

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Sharp SD-AT1000W Specifikace Strana 115