PROEL DSO480 - Page 31

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TheDSO480’s“D‐Max”limiterpredelays thesidechainsignal,resultingina“zeroovershoot”limiter,whichis
abletocatchallpeaksandprovideareliableabsolutemaximumsettingfortheoutputofanychannel.
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Thepredelayedsidechainisshowningreen,withthemain
signalinred.Asthemai
nsignalarrivesslightlyafterthe
sidechain,theoutputfromtheunitdoesnotsufferfrom
theovershootproblem.
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Rememberthatthisdelayisonlyintheorderoftensof
uS,andisapredelay–thesidechainismovedbackintime
inrelationtothemainsignal.Insertingadelayintothe
mainsi
gnalpathofananaloguedynamicsprocessorwill
achievesimilarresults,butwiththepenaltyofdelayingthe
mainsignalbytheamountoflookaheaddelayintroduced.
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The“D‐Max”limiterwhichappearsinoutputlistsjustfollowingthetraditionallimiter,hasonlytwo
parameterstoadjust:
OP1 Output 1 ClipLim
Rel.= Medium 10dB Above
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Thereleasetime(eitherFast,Medium,orSlow)andthethreshold.Notethatthethresholdisset tobe
aminimumof2dBabovethethresholdoftheprogramlimiter–settingthethresholdto10dBAbove,asin
theexample,meansthatnomorethan10dBofovershootabovethethresholdoftheprogramlimiterwill
everbeallowed.
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There
leasetimemayalsobesettofollowtheHighPassfilteroftheoutput–thisisachievedthroughthe
Design a Crossoversub‐menu,andwillresultinthedisplaychangingtoshow
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OP1 Output 1 ClipLim
Rel.= Auto 10dB Above
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