Dolby Laboratories DP570 4.14 Emulator Bypass, 4.15 Solo Input Mode , 4.16 Unity Gain Mode

Using the DP570 Features Emulator Bypass
Dolby® DP570 Multichannel Audio Tool User’s Manual 39
Table 4 ‐6describestheelectricalcharacteristics.
4.14 Emulator Bypass
WhenyouenableEmulatorBypass,thefront‐panelEscbuttonisilluminated.Inthis
mode,theonlysettingsthataffecttheoutputaretheroutersettings.Monitoringoptions
arelimitedtoprogramselection.Ifyouareusingthe Lt/Rt Input,thatsignalissent,without
decoding,totheLeftandRightemulatoroutputs.Bassmanagementremainsactive.
4.15 Solo Input Mode
TheDP570providesatwo‐channelanaloginputthatcanberoutedtotheanalogoutputs.
ThisinputiscalledSolobecausethefeatureprovidesawaytorouteastandardsignalfrom
amixer(suchasthemixer’ssolobusoutput)intothemonitorchain.Thefeaturecanalso
beusefulasageneral‐purposeanalogbypass.
SoloInputmodebypassesthedigitalaudioinputs,andonlythesoloinputsfromthe
Analog I/O connectoronthebackpanelroutetotheLeftandRightoutputs.IftheMono
speakeroutputisselected,theinputsignalsaresummedandfedtotheMonooutput.
TheSoloinputisavailableonlybydrivingtheSoloControllineontheGPI/Oport.TheSolo
Controlline(pin6)islevel‐triggeredandisactiveinthehighstate.ThestatusoftheSolo
inputdisplaysonthefront‐panelSoloLEDandisindicatedontheSoloTally line(pin5)
ontheGPI/Oport.
4.16 Unity Gain Mode
UnityGainmodedefeatstheaudibleeffectsofdialoguenormalizationwhileallowingthe
dialnormvaluetobeusedinchoosingdynamicrangecontrolsettings.Itisvaluablewhen
theemulatoroutputsoftheDP570arereturnedtotheconsoleforuseasmonitorinputs.
UnityGainmodeisenabledbydefault.ToturnUnityGainmodeoff:
1. ClickSetupintheMainwindowtoopentheSetupwindow.
2. UnchecktheUnityGainModeboxontheleftsidenearthebottom.
Figure4‐8showsadetailoftheUnityGainModeboxontheSetupwindow.
Figure 4-8 Unity Gain Mode Box
Table 4-6 Shaft Decoder Signal Electrical Characteristics
Characteristic Min Max
VT+Positive‐goinginputthresholdvolt age 1.2V2.1V
VT–Negative‐goinginputthresholdvoltage 0.5V1.4V
VHHysteresisvoltage 0.4V1.5V