PROEL Axiom DSO480 User manual

USER’S MANUAL
www.proelgroup.com
english

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DSO480 QuickReference

Editingchannels:presschannel’sGAIN key.Firstpressaccessesthat
channel’sgain.Toscrollthroughchannel’sparameters,usetheBACKand
NEXTkeys.Secondpressaccesseslastviewedparameter.Thirdpresswill
dropbacktothedefaultscreen.

Accessingmenus:presstheMENUkey.UsetheBACKandNEXTkeysto
selectthesub‐menurequired,andenterthesub‐menuusingtheENTERkey.
Thisappliestoalllevelsofmenu.ENTERalwaysconfirmsselections.

TheMenusandtheirContents

GLOBAL MEMORY Sub‐menu:Recall/Store/Eraseinputandcrossover
settings,orcombinationsof.
INPUT SECTIONSub‐menu:Setupinputganging,andGEQ‘Q’setting.
CROSSOVERSub‐menu:Setuporadjustcrossoverdesign,including
routingandautolimitersetting.Alsosetupoutputganging.
INTERFACESub‐menu:Commsinterfacesetup(RS232)
SYSTEM Sub‐menu:Usedtoviewunit’sstatus,andselectvariousglobal
optionssuchasPEQ‘Q’orbandwidthunits,delayunits,andoutputmetering
point(pre/postmute).
SECURITY Sub‐menu:Usedforlockingvariousoperationsoftheunit,
usinga4digitcode.
AES/EBU Sub‐menu:Switchoutputsfromanaloguetodigitaland
monitorAESinputstatusinfo.(AESinputsareswitchedviarearpanel.)

Notes
Thecrossover(output)settingsmaybestoredindependentlyoftheinput
settings,usingtheGlobalMemorysub‐menu.

Theoutputmetersshowlevel,indBfromthelimiterthreshold,andtheinput
metersshowlevelfromclippingtheA‐Dconverters,
pre‐gainandallEQ.

Thehighandlowpasscrossoverfiltersaredefinedindependentlyoneach
outputchannel.

Toaccessthelimiterattackandreleaseparameters,select“AutoLimiter
TimeCst:No”whendesigningacrossover.

Toswapparametricfilterunitsbetweenbandwidth(‘BandW’)and‘Q’,enter
SystemSub‐menu,select‘FilterQ/Bandwidth’,andselectrequired
readoutunits.

Toswapdelaytimeunits,enterSystemSub‐menu,select‘DelayTime/
Distance’,andselectrequiredreadoutunits.

PressinganEDITkeyflashescorrespondingchannelsroutedto/fromthat
channel.

4
Contents
Important Safety Information 6
Thanks 7
Unpacking the unit 7
Introduction 8
Features 8
Front Panel Familiarisation 9
Rear Panel Connections 10
Operating the DSO480 11
Preliminary Set-up 11
Input Channel Makeup 12
Output Channel Makeup 12
Preset Routing Configurations 12
Free Assign Routing 15
Input Gain 16
Base Delay 16
Input Parametric EQ 16
Output Gain 17
Output Polarity 17
Output Delay 17
Output High Pass Filter 18
Output Low Pass Filter 18
Output Parametric EQ 18
Output Limiter 19
Output “D-Max” (Clip) Limiter 19
Input Ganging and Output Ganging 19
Menu System Overview 21
Menus in Detail 23
Memory Structure 24
Remote Control Interface Operation 25
RS232 Interface 25
RS232 Connection (Single Unit) 25
Loading New Software via a PC 26
AES Inputs 26
AES Input 26
Security and Locking 27
Entering the Password to Complete the Locking Operation 27
Unlocking the Unit 28
Forgotten the Password? 28
Program Limiter and “D-Max” Limiter 29
Program Limiter 29
“D-Max” Clip Limiter 29
Setting Accurate Limiter Thresholds 32
Crossover Filter Slopes 33

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Time Alignment 33
Parametric Filter Types and Their Uses 34
Standard Parametric EQ 34
Shelving EQ (High Shelf shown) 35
Creating a Flat-topped EQ Response 35
Bandpass Filter 36
Notch Filter 36
All Pass Filter 37
Phase Filter 37
Low/High Pass Variable ‘Q’ Filter (Low Pass shown) 38
Elliptical filters 38
Factory presets 39
Warranty 39
Specifications 40

6
Anexampleofthisequipmenthasbeentestedandfoundtocomplywiththefollowing
EuropeanandinternationalStandardsforElectromagneticCompatibilityandElectricalSafety:


RadiatedEmissions(EU):EN55013‐1(1996)
RFImmunity(EU):EN55103‐2(1996)RFImmunity,ESD,BurstTransient,Surge,Dips&Dwells
ElectricalSafety(EU): EN60065(1993)
ImportantSafetyInformation
DonotremoveCovers.
Nouserserviceablepartsinside,referservicingtoqualifiedservicepersonnel.
Thisequipmentmustbeearthed.
CAUTION
RISKOFELECTRICSHOCK
DONOTOPEN
DONOTEXPOSETORAIN,MOISTURE,
DRIPPINGORSPLASHING
ATTENTION
RISQUEDECHOCELECTRIQUE
NEPASENLEVER
NEPASEXPOSERALAPLUIENIAL’HUMITE

Objectscontainingliquids,suchasvases,mustnotbeplacedonthisequipment.

Itshouldnotbenecessarytoremoveanyprotectiveearthorsignalcableshieldconnections.

Donotdefeatthepurposeofthepolarizedorgrounding‐typeplug.Apolarizedplughastwobladeswith
onewiderthantheother.Agroundingtypeplughastwobladesandathirdgroundingprong.Thewider
bladeandthethirdprongareprovidedforyoursafety.Whentheprovidedplugdoesnotfitintoyour
outlet,consultanelectricianforreplacementoftheobsoleteoutlet.

Onlyusethisequipmentwithanappropriatemainscord.

IntheUSAthecordshouldcomplywiththerequirementscontainedintheStandardforCordSetsand
PowerSupplyCords,UL817,bemarkedVW‐1,andhaveanampcapacityratingnotlessthanthemarked
ratingoftheapparatus.



7
Thanks
ThankyouforchoosingaPROELDSO480 foryourapplication.Pleasespendalittletimereadingthrough
thismanual,sothatyouobtainthebestpossibleperformancefromtheunit.
AllPROELproductsarecarefullydesignedandengineeredforcutting‐edgeperformanceandworld‐class
reliability.IfyouwouldlikefurtherinformationaboutthisoranyotherPROELproduct,pleasecontactus.
Welookforwardtohearingfromyouinthenearfuture.
Unpackingtheunit
Afterunpackingtheunit,pleasecheckitcarefullyforanydamage.Ifanyisfound,immediatelynotifythe
carrierconcerned‐you,theconsignee,mustinstigateanyclaim.Pleaseretainallpackagingincaseof
futurere‐shipment.



Pleasethinkofourenvironmentanddon’tbinanymaterials,includingthismanual.
Whentheproducthasreachedtheendofitsusefullife,pleasedisposeofitresponsibly
througharecyclingcentre.

FEDERALCOMMUNICATIONSCOMMISSION
ThisisaclassAdigitaldevice,whichismarkedforuseinacommercial,industrialorbusiness
environment,exclusiveofusedbythegeneralpublicorusedinthehome.

ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothefollowingtwo
conditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptany
interferencereceived,includinginterferencethatmaycauseundesiredoperation.

CAUTION:Changesormodificationstothisproductnotexpresslyapprovedbythemanufacturercould
voidtheuser'sauthoritytooperatethisproduct.

NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevice,
pursuanttoPart15ofFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst
harmfulinterferencewhentheequipmentisoperatedinacommercialenvironment.Thisequipment
generates,usesandcanradiateradiofrequencyenergyand,ifnotinstalledandusedinaccordance
withtheinstructionmanual,maycauseharmfulinterferencetoradiocommunications.Operationsof
thisequipmentinaresidentialareaislikelytocauseharmfulinterferenceinwhichcasetheuserwill
berequiredtocorrecttheinterferenceathisownexpense.

8
Introduction
TheDSO480ispowerfulDSPbasedaudioprocessors,ideallysuitedforinstallapplications,wherethey
combinethefunctionsofamultitudeofconventionalproductsinacompact1Uunitwithextensiveremote
controlcapabilities.Toachievethis,theunitshaveuptofourinputsandeightoutputswhichcanbe
configuredinaselectionofbasiccrossovermodes–4x2way;2x3way+2Aux;2x4way;and1x8way
(asapplicabletoi/oconfigurations).Theyalsooffera“freeassign”mode,whichallowscompletelyflexible
routingofanyoutputfromanycombinationofinputs.

Eachinputhasagaincontrol,variabledelay,aeightbandsoffullyparametricequalisation.Theparametric
filterbandshavealargeselectionofdifferentfiltertypesavailable,includingshelving,notch,band‐pass,
phaseandellipticalbehaviours.

Eachoutputhasagaincontrol,variabledelay,highandlowpasscrossoverfilters,ninebandsoffully
parametricequalisation,polarityswitchingand,additionally,afullyfeaturedlimiter,andafinalcliplimiter.
Thecrossoverfiltersofferslopesofupto48dB/Octave.,withavarietyofresponsesavailable.

RemotecontroliscateredforintheformofRS232,andmultipleusermemoriesareprovidedforthe
storageandrecallofsettings.

Securitylock‐outisavailableforallcontrols.

TheDSO480isalsoequippedwithAES/EBUdigitalinputs,andincludeasamplerateconverter,capableof
acceptinganythingfrom32kHzupto192kHz.


Features

Superbaudioquality–carefullyoptimiseddoubleprecisionsignalprocessingcoupledwith24bit
conversionensureadynamicrangeinexcessof116dB.Thehighsamplingrateof96kHzmeansminimal
filteringprovidingexceptionalsonicpuritywithabandwidthinexcessof32kHz.

Aflexibleinput/outputmulti‐modeformatcatersforanyconfiguration,regardlessofscale.

Bothroutingofinputstooutputs,andganging(forediting)arecompletelyflexible.

AcompletelynewSHARCTMbasedDSPplatformsuppliesphenomenalcomputationalpower,allowingthe
unittoprovidemultiplebandsofstandardparametricequalisationoneveryinputandoutput.This
additionalpoweralsopermitsbothprogramlimitersandnoovershootcliplimitersoneachoutput.
Delayofupto650mSmaybeindependentlysetforeachoutput,withanexceptionallyfineminimum
incrementof300nS,whichcorrespondstoadistancechangeof0.1mm!
Thecomprehensivestandardspecificationalsoincludesupto255memories,andremotecontrolviaRS232
withsecuritylockout.algorithmensuresthatnomatterhowmuchequalisationisappliedtoachannel,
therewillalwaysbesufficientheadroomavailabletocaterforit.

9
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.


ControlKeys:Selectionandadjustmentofparameters.
NEXTkeymoves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parameter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bypassthehighandlowpassfiltersections.
QUITexitsmenusbacktothedefaultscreen.

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);ERRifsomeerroroccurinthedigitalinputssection
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InputSections:Controlandmonitorinputsignalpaths.
RedMUTEbuttons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.
InputmetersshowdBfromclippingpointoftheanaloguetodigital
converters.Yellow(0dB)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internalclippingaftertheADC.
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OutputSections:Controlandmonitor
outputsignalpaths.
RedMUTEbuttons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.TheyellowLEDilluminatesattheonsetoflimiting.TheredLEDilluminatesat4dBintolimiting
(i.e.4dBofgainreduction).
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10
RearPanelConnections
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PowerSwitch:turnstheunit’smainssupplyoffandon.
MainsFuse:locatedinafinger‐proofholderadjacenttothemainsinlet.A
sparefuseisalsolocatedinthisholder.
MainsInlet:connectedviaastandardIECsocket.
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Alwaysreplacethefusewiththecorrecttypeandratingasshownontherearpanellegend.
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RS232:RS232standardviaa9pinD‐typeconnector,forconnectiontoaPC.
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AudioOutputs:3pinXLRsocketsareprovidedforeachchannel.Allarefullybalanced,pin2hot,3cold,1
screen.
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AESInputSwitch:RecessedswitchtoselectAESdigitalinputs.RedLEDwillilluminateintheholewhen
AESinputsareselected,alongwiththecorrespondingfrontpanelindicator.
AudioInputs:3pinXLRsocketsareprovidedforeachchannel.Allarefullybalanced,pin2hot,3cold,1
screen.
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NotethelegendingonthepaneltodesignatewhichinputsareusedforAESwhenthedigitalinputsare
enabled.Pleaseseepage26formoreinformation.