Sharp SD-AT1000W Dokumentacja Pobierz pdf (Strona 93)

Maxiva UAX

October 17, 2013

3‐25

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

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

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 291 292

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Sharp SD-AT1000W Dokumentacja Strona 93