- Dolby Multichannel Audio Tool User's Manual

18 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Controlling the DP570
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liststhefunctions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 3‐7liststhefunctionsthatcanbeassignedtoGPIpins.Somefunctionshave
restrictionsonthepolarityortriggertype.GPIfunctionsthat
aremutuallyexclusivemust
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
a AvailableonlyinunitswiththeCat.No.548AnalogOutputCard.
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activ e.
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.
Bsspeakermute
a
Either Either Mute IndicatesMuteisactive.
SpeakerSelect
(Multi,Stereo,Mono)
a
Either Either Speakerselected Indicateswhichspeakerisselected.
ProgramSelect(1–8) Either Either Enabled Indicateswhichprogramisselected.
PresetSelect(1–32) Either Either Enabled Indicateswhichpresetisselected.
DownmixMode
(Full,Stereo,Mono,
Phant,3‐Stereo)
Either Either Enabled Indicateswhichmodeisselected.
DynamicRange
ControlMode
(Line,RF,Custom)
Either Either Enabled Indicateswhichcompressionmodeisselected.
ReferenceLevel
a

Either Level 0dB IndicatesMasterVolume=0dB.