PROEL DSO480 - Front Panel Familiarisation; LCD Screen; Control Keys; Rotary Encoders

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FrontPanelFamiliarisation
LCDScreen:Shows,bydefault,thenameof
thelastrecalledmemoryonthebottomline
ofthescreen,andthecurrentroutingonthe
topline.Alsousedtoshowallparametersas
theyareedited,andallmenuselections.
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ControlKeys:Selectionandadjustmentofparameters.
NEXTkeymov
esforwardthroughlistofparameters.
BACKkeymovesbackwardsthroughlistofparameters.
MENUkeyactivatesthemainmenu–asecondpressselectsthelastmenuedited–athird
pressselectsthelastmenuitem.Inthisway,threepressesonMENUfromthedefault
screenwilljumpbacktothelastparam
eteradjusted.Selectionofdifferentmenusis
accomplishedusingtheBACKandNEXTkeys,orwiththeFREQencoder.
ENTERkeyentersthechosenmenu,confirmsselections,andchangesfiltertypes
wheneditingparametricsections.
BYPASSwillflattenthecurrentlyselectedparametricsections.Notethat,forsafetyreasons,itisnot
possibletobyp
assthehighandlowpassfiltersections.
QUITexitsmenusbacktothedefaultscreen.
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RotaryEncoders:Threevelocitysensitiveencodersadjusttherelevant
parametersasdisplayedonthescreen.
StatusLEDs:ThetwostatusLEDsshow AESinputsselected(flashingifnot
locked);ER
Rifsomeerroroccurinthedigitalinputssection
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InputSections:Controlandmonitorinputsignalpaths.
RedMUTE buttonsilluminatewhenpressedandmuteaudioforthatchannel.
EDITbuttonsilluminateyellowwhenpressed,andaccessgainonfirstpress,
thenlastviewedparameteronsecondpress,thenex
itonthirdpress.
InputmetersshowdBfromclippingpointoftheanaloguetodigital
converters.Yellow(0 dB)LEDilluminates3dBfromclipping.RedCLIPLED
mayilluminateindependentlyfromtherestofthemetertoshowdigitaloverflow.AllfourCLIPLEDs
illuminatingindicates inter
nalclippingaftertheADC.
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OutputSections:Controlandmonitor
outputsignalpaths.
RedMUTE buttonsilluminatewhen
pressedandmuteaudioforthat
channel.
EDITbuttonsilluminateyellowwhen
pressed,andaccessgainonfirstpress,
thenlastviewedparameteronsecondpress,thenexitonthirdpress.OutputmetersshowdBfrom
limiting.Th
eyellowLEDilluminatesattheonsetoflimiting.TheredLEDilluminatesat4dBintoli miting
(i.e.4dBofgainreduction).
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