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Dolby Laboratories DP570 Stereo System User Manual

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DP570 Multichannel Audio Tool User’s Manual

Controlling the DP570 Using the GPI/O Connector

3.5.6 Analog Output Master Volume

PressShift,Entertoaccessthemastervolumecontrolfortheoptionalanalogoutputs.

Usethearrowbuttonstoadjustthevolume.Press

Entertokeepthecurrentvalueand

returntothepreviousmenu,orpress

Esctorestoretheinitialvalue.Anyadjustmentyou

maketakeseffectimmediately.

3.6 Using the GPI/O Connector

YoucanusethisporttoconnecttheDP570toyourstudioconsoleorexistingcontrol

equipment.Astand‐aloneremotecontrolunit,the Cat.No.549GPI/OController,isalso

availabletoprovideeasyaccesstothefeaturesofthe

GPI/Oport.Byassigningspecific

functionstotheuser‐definablepins,youcancontrolandobtainstatusfromtheDP570.

ManyfunctionsalsoallowyoutoadapttheDP570toyourexistingenvironmentby

definingthetypeandpolarityoftheinputoroutputlogic.

3.6.1 Selecting GPI/O Functions

Table 3‐6providesadescriptionforeachfunctionthatcanbeassignedtoGPOpins.Some

functionshaverestrictionsonthepolarityortriggertype.TheActiveStatecolumn

indicatestheDP570statethatcauseslevel‐triggeredpinstobeforcedtothelogiclevel

indicatedinthePolaritycolumnof

thetable.Forexample,whentheDP570entersEmulator

BypassmodetheGPOpingoeshigh.WhentheunitisnolongerinBypassmode,thepin

goeslow.

Table 3-6 GPO Functions Available

Function Polarity Trigger Active State Description

VRef Either Either VReferror Nosignalorinvalidsignal.(Checkfor

propertermination.)

Metadatain1 Either Either Metadataerror InvalidsignalwhileunitisinExternal

Metadatamode.

Metadatain2 Either Either Metadataerror InvalidsignalwhileunitisinExternal

Metadatamode.

Emulatorbypass Either Either Bypass IndicatesBypassisactive.

DelayLED Either Either On Notyetimplemented.

Lt/Rtinput Either Either Enabled IndicatesLt/Rtinputisactive.

Dim/mute

a

Either Either Enabled IndicatesDimGainsettingisactive.

SurroundEX™ Either Either EXon IndicatesSurroundEXisactive.

ProLogic

®

Either Either ProLogicon IndicatesProLogicisactive.

Lspeakermute

a

Either Either Mute IndicatesMuteisactive.

Rspeakermute

a

Either Either Mute IndicatesMuteisactive.

Cspeakermute

a

Either Either Mute IndicatesMuteisactive.

SWspeakermute

a

Either Either Mute IndicatesMuteisactive.

Lsspeakermute

a

Either Either Mute IndicatesMuteisactive.

Rsspeakermute

a

Either Either Mute IndicatesMuteisactive.

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