Specifications

Maxiva UAX
October 17, 2013
3‐25
888‐2693‐004 WARNING:Disconnectprimarypower priortoservicing.
Copyright©2013,HarrisBroadcast
3.6.4 LPUSystemCalibrationScreen
Figure 3-26 LPU System Calibration Screens
FoldbackThreshold(Fwd
%)
Thisle
velrepresentsthepercentageofreflectedpowerthatcanbetoleratedbeforeinitiating
foldback.Thelevelcanbesetfrom1to4%.Fourpercentisthemaximumreflectedpower
settingallowed(approximately1.5:1VSWR).Areflectedpowerlevelof1%correspondstoa
1.22:1VSWR.Asystemfoldbackthresholdset
tingof4%meansthatreflectedlevelsgreaterthan
4%wouldinitiateafoldbackoftransmitteroutputpower.
MaximumFo
ldback:
Thisisthemaxi
mumamountoffoldbackallowed.MaximumFoldbackcanbesetbetween50
and100%.PowerfoldbackoccurswhentheFoldbackThreshold,describedabove,isreachedor
surpassed.
Fold backal
lowsthetransmitterpoweramplifier(s)tooperateatasafe(reduced)outputpower
levelwhenhighVSWRconditionsoccur.A100%foldbacklevelmeansthepoweroutofthe
transmitterwouldbezero.A50%foldbacklevelwouldreducethetransmitteroutputpowerto
halfpower.
FoldbackRe
leaseTC(s):
Thisistheam
ountoftime,inseconds,thatthecontrolsystemwaitsafterfoldbackisactivated
beforeattemptinganoutputpowerincreasestep.Therangeis5‐120seconds.
Table3‐16XMTRHome>LPUHome>Config>&>Next(Page2)
Field Explanation