Gefen GTV-AUDDEC-N User manual

4x1 HD Switcher
w/ Audio Decoding
GTV-AUDDEC-N
User Manual
gefentv.com

ASKING FOR ASSISTANCE
Rev A3
Technical Support:
Telephone  (818)772-9100
   (800)545-6900
Fax   (818)772-9120
Technical Support Hours:
8:00AMto5:00PMMondaythroughFriday,PacicTime

Write To:
Gefen,LLC
c/oCustomerService
20600NordhoffSt
Chatsworth,CA91311
[email protected]
www.gefentv.com
Notice
Gefen,LLCreservestherighttomakechangesinthehardware,packaging,and
anyaccompanyingdocumentationwithoutpriorwrittennotice.
4x1 HD Switcher w/ Audio Decoding isatrademarkofGefen,LLC

HDMI,theHDMIlogo,andHigh-Denition Multimedia Interfaceare
trademarksorregisteredtrademarksofHDMILicensingintheUnitedStatesand
othercountries.
ManufacturedunderlicensefromDolbyLaboratories.
Dolby,ProLogic,andthedouble-Dsymbol
areregisteredtrademarksofDolbyLaboratories.
©2011Gefen,LLC.Allrightsreserved.
Alltrademarksarethepropertyoftheirrespectiveowners.

CONTENTS
1 Introduction
2 OperationNotes
3 Features
4 FrontPanelLayout
5 FrontPanelDescriptions
6 BackPanelLayout
7 BackPanelDescriptions
8 IRRemoteLayoutandDescriptions
10 IRRemoteInstallation
11 IRRemoteConguration
12 Connectingthe4x1HDSwitcherw/AudioDecoding
12  WiringDiagram
13 Operatingthe4x1HDSwitcherw/AudioDecoding
13  StatusScreen
13  StandbyModeandPowertheSwitcher
15  AdjustingtheVolume
16  ChangingtheAudioProcessingMode
16  AccessingtheMenuSystem
17 MenuSystem
17  SettingtheSpeakerSize
19  SettingtheSpeakerLevel
21  SettingtheSpeakerDistance
23  AdjustingtheToneControl
25  SavingAudioProcessingFavorites
30  DynamicRangeCompression
32  AudioEnhancementModes
34  SettingtheUnitofMeasure
36  SettingtheEDIDMode
38  SettingtheIRChannel
40  ResettingtheSwitchertoFactorySettings
42 RS-232SerialControl
43 RS-232SerialCommands
69 MenuSystemSummary
69  MainMenu
71  SpeakerSizeMenu
72  SpeakerLevelMenu
74  SpeakerDistanceMenu
76  ToneControlMenu
77  AudioSetupMenu
79  MiscSetupMenu
81 Specications
82 Warranty

1
Congratulationsonyourpurchaseofthe4x1HDSwitcherw/AudioDecoding.
Yourcompletesatisfactionisveryimportanttous.
Gefen TV
GefenTVisauniqueproductlinecateringtothegrowingneedsforinnovative
hometheatersolutions.Wespecializeintotalintegrationforyourhometheater,
whilealsofocusingongoingaboveandbeyondcustomerexpectationstoensure
yougetthemostfromyourhardware.Weinviteyoutoexploreourdistinct
productlineandhopethatyoundyoursolutions.Don’tseewhatyouarelooking
forhere?Pleasecallussowecanbetterassistyouwithyourparticularneeds.
The Gefen TV 4x1 HD Switcher w/ Audio Decoding
TheGefenTV4x1HDSwitcherw/AudioDecodingisidealforanyonewanting
tocreateHomeCinemasystemsusingmultipleHDMIaudio/videosources.It
offersaneasy-to-usealternativetoover-complicatedHomeTheaterReceivers,
whilesupporting3DTVandthelatestBlu-rayaudiofeatures,oritcanaddHDMI
connectionsandaudiodecodingtoexistingA/VReceiversthatlackHDMI
support.Itdecodesmulti-channelsurround-soundformatteddigitalaudio
fromuptofourHDMIsources,fromcoaxandopticalS/PDIFdigitalaudio
sources,plusastereoanaloginput.AudioisoutputonsixdiscreteanalogRCA
jacks,readyforany5.1channelpoweramplier,orconnectstothe“External
Processor”inputonmostexistingA/Vreceivers.DolbyDigital5.1,DolbyPro
LogicII,LPCMdirectstereoandmulti-channelsurround-soundaudioformats
aresupportedwithuptosix(5.1)discretechannels.Thefrontleftandfront
rightchannelsfeaturedualoutputsforbi-amplication.Advancedaudiopre-
processinginsuresanoptimalsurroundsoundsignal,andabrightLCDdisplay
guidesoperations.RS-232controlallowsconnectiontoremotecontrolorhome
automationsystems,suchasGefen’snewGAVAautomationsystemandGefen
PACS,withfullfeedback.
How It Works
UserscanselectaudiofromanyoneoffourconnectedHi-Defsources,both
digitalaudioinputsand2-channelanalogaudio.ABlu-rayplayer,gaming
console,set-topbox,DVDplayer,CDplayerandmorecanallbeconnectedat
thesametime.IfanHDMIsourceisselected,videoisdeliveredinHi-Defformat
toanyHDTVdisplay,andaudioisdeliveredas5.1channelaudiousingstandard
RCAconnectors.TheHDMIoutputsupportspass-through3DTVmakingitideal
forfuture-proongsystems.Userscanalsopass-throughaudiousingthedigital
and/oranalogaudioinputs,deliveringitasupto5.1-channelaudio,enabling
highqualitysurround-sound.Whenanaudioinputisselected,thevideofromthe
previously-selectedvideosourceisstilloutputtotheHDMIoutput,allowingusers
towatchavideosourcewhilelisteningtoadifferentaudiosource.Userscontrol
allaudiofeaturesusingtheIRremoteorbyfront-panelbuttons.AnRS-232port
and12Vtriggersallowinteractionwithanyhomeautomationsystemforadded
convenience.
INTRODUCTION

2
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE 4X1 HD SWITCHER W/ AUDIO DECODING
• TheDigitalAudioDecoderforHDMIhas8RCAoutputs.Amaximumof6
discretechannelsofaudiocanbeoutputviatheseconnectors.2connectors
areavailableforbi-ampingthefrontleftandrightchannels.
• Thisproductwasintendedforusewithaseparateaudioamplier.TheRCA
outputconnectorsontherearpanelwillrequiretheuseofanaudioamplier
toproduceadequatevolumeoutput.
• Thisunitwillsupportthefollowingaudioformats:
LPCM(upto6channels)
DolbyDigital(AC-3upto6channels)
DolbyProLogic
DolbyProLogicII
• ThisunitfeaturesmultipleEDID(displayinformation)modeswhichwill
determinewhataudioformatscanbeused.Formoreinformationpleasesee
page36.
• ThisunitwillacceptsourcesthatuseDeepColor.

OPERATION NOTES

3
Features
• Supportsresolutionsupto1080pand1920x1200
• SwitchbetweenfourHDMIsourcesandasingleHDTVdisplay
• SupportsDolbyDigital5.1(AC3),DolbyProLogicII,LPCMHDMIdirect(up
to6channels)
• ExtractsencodeddigitalaudiofromHDMI,TOSLINK,orS/PDIFinputs
• FrontPanelpush-buttoncontrols
• RS-232control
• IRRemotecontrol
• 12Vtriggerinputforpowerampliers(turnsunitonwhen12Visreceived)
• 12V,50mAtriggeroutput(outputis12Vwhenunitison,0Vwhenunitisoff)
• Saveandrecallusersettingsforeachinput
• Linelevelvolumecontrol
• StandbyMode
• Enclosureprovidesexcellentheatdissipationandquietoperation

Package Includes
(1)4x1HDSwitcherw/AudioDecoding
(1)6ft.HDMIcable(M-M)
(1)IRremotecontrol
(1)24VDCpowersupply
(1)ACpowercord
(1)Usermanual
FEATURES

4
Front Panel
FRONT PANEL LAYOUT
1 2
11
3
10 9
4
8 7
5
6
H1 HD -10db None Direct

5
1 IR
ThisIRreceiverwillacceptcommandsfromtheincludedIRRemoteControl
Unit.
2 Input◄
Thisbuttoncyclesthroughallvideoandaudioinputs.Foreachvideoinput,
audiomaybeselectedfromtheembeddedHDMIaudio,orthecoax,optical,or
L/Ranalogaudioinputs.
3 Volume▼
Thisbuttonisusedtodecreasethevolumeleveloftheaudiooutputswhen
notintheMenuSystem.WhileintheMenuSystemthisbuttonwillcycledown
throughthecurrentlevel’soptions.
4 Mode/OK
Thisbuttonwillchangetheaudioprocessingmode.Thisbuttonservesasa
conrmationbuttonwhenusingtheMenuSystem.
5 Exit
Thisbuttonisusedtoexitthecurrentmenulevelandreturntotheprevious/
parentlevel.ThisbuttonwillexittheentireMenuSystemwhenonthetopmost
level.
6 Power
PressthisbuttontopowerONtheSwitcherorplaceitinStandbymode.
7 PowerIndicator
ThisLEDwillindicatethecurrentpowerstate.WhentheLEDisred,theunitis
instandbymode.WhentheLEDisgreen,theunitison.
8 Menu
ThisbuttonwillactivatetheMenuSystemwhichiswherealladjustmentand
settingswillbemade.
9 MainLCDDisplay
Thisdisplaywillshowpertinentstatusinformationandwillbeusedtomake
adjustmentstofeaturesintheMenuSystem.
10 Volume▲
Thisbuttonisusedtoincreasethevolumeleveloftheaudiooutputswhennot
intheMenuSystem.WhileintheMenuSystemthisbuttonwillcycleupthrough
thecurrentlevel’soptions.
11 Mute►
ThisbuttonwillcyclesbetweenMute-OnandMute-Offmodes.Whenthe
Mute-Onmodeisenabled,allaudiooutputwillbeceased.WhileintheMenu
Systemthisbuttonwillcyclethroughavailableoptionsintherightdirectionwhen
afeaturehasbeenselectedforadjustment.
FRONT PANEL DESCRIPTIONS

6
BACK PANEL LAYOUT
Back Panel
11
2 31
12
4 65 7 8 9
10

7
BACK PANEL DESCRIPTIONS
1 LineOut(FrontBi-Amp)
TwoRCAaudiooutputconnectorsavailableforfront-channelbi-amping
purposes.TheoutputsignalisidenticaltotheFrontL/Routputs.
2 LineOut(Surround,Sub,Front)
8RCA-typeaudiooutputsareavailableforconnectiontoaseparateamplier.
Upto6discretechannelscanbeutilized.
3 LineIn
L/RRCA-typeaudioinputsforanalogaudio.
4 OpticalIn
UseanopticalcabletoconnectanexternaldigitalaudiosourcetothisTOSLINK
connector.
5 RS-232
Thisportisusedtocontrolfunctionsandfeaturesusingserialcommunications.
Formoreinformationonthisfeaturepleaseseepage42.
6 ExtIR
ConnectanIRextender(GefenPartNo.EXT-RMT-EXTIR)tothisportto
extendtheIRrangeifthisproduct.
7 TriggerOut
Provides11.5VDCwhentheSwitchispoweredON.Thistriggercanbeused
tocontrolanexternalpoweramplier,lights,curtains,etc.
8 TriggerIn
UsedtoexternallypowertheunitONorOFF.ThistriggerwillpowerONthe
Switcherwhena3V-12VDCvoltageisapplied.Iftheexistingvoltageis
removed,thentheSwitcherisplacedinStandbyMode(consumeslessthan<
1W).
9 24VDC
Connecttheincluded24VDCpowersupplytothispowerreceptacle.Onlyuse
thepowersupplythatisincludedwiththisproduct.
10 HDMIIn(1-4)
UsetheseportstoconnectandswitchbetweenfourHDMIdevices.
11 HDMIOut
ConnectanHDMIoutputdevicetothisport.
12 CoaxIn
Useacoaxaudiocabletoconnectanexternaldigitalaudiosourcetothis
S/PDIFconnector.

8
IR REMOTE DESCRIPTION
GTV-AUD-NIR IR Remote Control Unit
1 Mute
Thisbuttoncyclebetweenmuteonandmuteoffmodes.Whenmuteisapplied
therewillnotbeanyaudiooutput.
2 Mode
ThisbuttonfunctionsthesameastheModebuttononthefrontpanel.
3 Enter
Conrmsthecurrentselectionsetting.
4 ◄(CursorLeft)
ThisbuttonwillnavigateleftwhenusingtheMenuSystem.
5 Exit
ThisbuttonfunctionsthesameastheExitbuttononthefrontpanel.
6 ▼(CursorDown/DecreaseVolume)
ThisbuttonwillnavigatedownthroughoptionswhenusingtheMenuSystem
andwillincreasethevolumewhennotintheMenuSystem.
7 L/R
PressthisbuttontoselecttheanalogL/Raudioinputsource.Thecurrentvideo
sourcewillnotchange.
116
17
2
15
3
14
413
5 12
6
11
7
10
8
9

9
IR REMOTE DESCRIPTION
8 Coax
PressthisbuttontoselecttheS/PDIFaudioinputsource.Thecurrentvideo
sourcewillnotchange.
9 Optical
PressthisbuttontoselecttheS/PDIFaudioinputsource.Thecurrentvideo
sourcewillnotchange.
10 HDMI1234
PressthisbuttoncyclebetweeneachoftheHDMIinputsources.Theaudio
outputwillfollowtheHDMIsource.
11 Info/TestTone
ThisbuttonwilldisplayaseriesofinformationmessagesontheLCDscreen
whenpressed.WhenadjustingtheSpeakerLevel,thisbuttonwillactivate
atesttonethatisusefulforadjustingthevolumelevelofeachspeaker.
12 Enhance
Thisbuttonwillcyclethroughaudioenhancementpresets.Seepage32for
detailsontheavailablepresets.
13 ►(CursorRight)
ThisbuttonwillnavigaterightwhenusingtheMenuSystem.
14 Menu
ThisbuttonwillactivatetheMenuSystemwhichiswherealladjustmentand
settingswillbemade.
15 ▲(CursorUp/IncreaseVolume)
Thisbuttonisusedtoincreasethevolumeleveloftheaudiooutputswhennot
intheMenuSystem.WhileintheMenuSystemthisbuttonwillcycleupthrough
thecurrentleveloptions.
16 Power
ThisbuttonwilltogglebetweentheONandSTANDBYpowerstates.AnLED
statusindicatorwillsignifythecurrentpowerstate.AREDLEDwillbeactive
whentheunitisinStandbypowerstate.AGREENLEDwillbeactivewhenthe
unitisintheONpowerstate.
17 ActivityIndicator
ThisLEDwillbeactivatedmomentarilyeachtimeabuttonispressed.
NOTE: AnActivityIndicatorthatashesquicklywhileholdingdown
anyoneofthe16buttonsindicatesalowbattery.ReplacetheIR
RemoteControlbatteryassoonaspossible.

10
IR REMOTE INSTALLATION
Installing the Battery
1. RemovethebatterycoveronthebackoftheIRRemoteControlUnit.
2. Inserttheincludedbatteryintotheopenbatteryslot.Thepositive(+)sideof
thebatteryshouldbefacingup.
3. Replacethebatterycover.
TheRemoteControlunitshipswithtwobatteries.Onebatteryisrequiredfor
operationandtheotherbatteryisaspare.
BatterySlot
(shownwithbattery)
WARNING: Riskofexplosionifbatteryisreplacedbyanincorrect
type. Disposeofusedbatteriesaccordingtotheinstructions.

11
IR REMOTE CONFIGURATION
Corresponding DIP Switch Settings for each IR Channel
ItisimportantthattheIRchannelontheRemoteControlunit,matchestheIR
channelsetonthe4x1HDSwitcherw/AudioDecoding.Forexample,ifboth
DIPswitchesontheIRRemoteControlunitaresettoIRchannel0(bothDIP
switchesdown),thenthe4x1HDSwitcherw/AudioDecodingmustalsobeset
toIRchannel0.Seepage38onhowtochangetheIRchannelonthe4x1HD
Switcherw/AudioDecoding.
IRChannel0
(default)
1 2
ON
How to Resolve IR Code Conicts
IntheeventthatIRcommandsfromotherremotecontrolsinterferewiththe
suppliedIRRemoteControlunit,changingtheIRRemoteControl’sIRchannel
willxtheproblem.TheIRRemoteControlunithasabankofDIPswitchesused
forsettingtheIRchannel.TheDIPswitchbankislocatedunderneaththebattery
cover.
Left: Pictureofthe
openedrearbattery
compartmentoftheIR
remoteshowingthe
exposedDIPSwitch
bankbetweenthe
batterychambers.
IRChannel2
1 2
ON
IRChannel3
1 2
ON
IRChannel1
1 2
ON
1 2

12
How to Connect the 4x1 HD Switcher w/ Audio Decoding
1. ConnectuptofourHDMIsourcedevicestotheHDMIinputportsofthe
4x1HDSwitcherw/AudioDecodingusingtheincludedHDMIcables.
2. Optionally,connectadditionalaudiosourcestotheSwitcherusingOptical,
Coaxial,andL/RRCAcables.
3. ConnecttheDigitalAudioDecodertoanamplierusingtheRCAconnectors
ontherearpanel.ThefollowingRCAconnectorsareavailable:
• FrontLeft
• FrontLeft(forbi-amping)
• FrontRIght
• FrontRight(forbi-amping)
• Center
• LeftSurround
• RightSurround
• Subwoofer
4. ConnectanHDMIoutputdevicetotheHDMIoutputusinganHDMIcable.
5. Connecttheincluded24VDCpowersupplytothepowerreceptacleonthe
Switcher.ConnecttheACpowercordtoanavailableelectricaloutlet.
Wiring Diagram for the 4x1 HD Switcher w/ Audio Decoding
CONNECTING THE
4X1 HD SWITCHER W/ AUDIO DECODING
HDMI CABLE
L/R STEREO AUDIO CABLE
TOSLINK AUDIO CABLE
S/PDIF AUDIO CABLE
RS-232 CABLE
SPEAKER CABLE
TRIGGER CABLE
GTV-AUDDEC-N
SL
Subwoofer
EXT-PACS
(Professional Automation Control System)
Amplifier HD Display
12V Source
(for trigger in)
Electric Screen
Digital Audio CD Player
MP3 Player
Home Theater PC
Game Console
Cable Box
Blu-ray Player
GTV-AUDDEC-N
L
C
R
SR
IR Extender
STOP 1080p [DII]
SURROUND SOUNd
chp 4
VIDEO GAME MODE
Playing: SCALER WARS
LEVEL: 22
VIDEO GAME MODE
Playing: SCALER WARS
LEVEL: 22
Playing: SCALER WARS
LEVEL: 22
EISBRECHER
TRACK 2
GTV-AUDDEC-N
ATTENTION: Thisproductshouldalwaysbeconnectedtoa
groundedelectricalsocket.

13
OPERATING THE 4X1 SWITCHER W/ AUDIO DECODING
Status Screen
TheStatusScreendisplaysinformationregardingthecurrentsettingsofthe
Switcher.TheStatusScreenisalsousedinconjunctionwithnavigatingthe
built-inMenuSystem.

AfterpoweringontheSwitcher,theStandbyScreenwillbedisplayed.The
StandbyScreenindicatesthecurrentlyselectedA/Vinput,thecurrentvolume
setting,theaudioinputformat,andtheaudioprocessingmode:
Standby Mode and Powering the Switcher
OncethepowersupplyisconnectedandtheACpowercordisconnectedtoan
availableelectricaloutlet,thePowerIndicatorwillglowbrightred.Whenthe
PowerIndicatorisred,theSwitcherisStandbyMode.
Topower-ontheSwitcher,pressthePowerbuttononthefrontpanelorusethe
PowerbuttonontheIRRemoteControl.Thepowerindicator,nexttothePower
button,willglowbrightgreen.
A/V Input
Displaysthecurrentlyselected
AudioandVideoinputs
Audio Gain
Displaystheaudio
gain(volume)
Audio Mode
Displaysthecurrentaudio
processingmode
Input Format
Displaysthe
audioinputformat
H1 HD -10db
None Direct
StandbyMode
(RedLED)
SwitcherActive
(GreenLED)
-10db
Direct

14
OPERATING THE 4X1 SWITCHER W/ AUDIO DECODING
Selecting the Input Source
PresstheInput ◄buttontocyclethrougheachinputsource.Thetablebelow
listswhichinputsareactiveforeachselection.
ThisSwitcherhasfourHDMIinputs(1-4)andthreeoptionsforaudio(coax,
optical,andanalogstereo).Thefollowingtableliststheavailablevideoand
audioinputs.
Display Video Audio Display Video Audio
H1_HD HDMIIn1 HDMI H3_HD HDMIIn3 HDMI
H1_CX Coax H3_CX Coax
H1_OT Optical H3_OT Optical
H1_LR AnalogL/R H3_LR AnalogL/R
H2_HD HDMIIn2 HDMI H4_HD HDMIIn4 HDMI
H2_CX Coax H4_CX Coax
H2_OT Optical H4_OT Optical
H2_LR AnalogL/R H4_LR AnalogL/R
ThecurrentlydisplayedA/VinputisabbreviatedintheStatusScreen,usingthe
followingform:
[HDMI Input_Audio Source],where:
H1,H2,H3,andH4isanHDMIinputonthebackpaneloftheSwitcher.
AndCX=Coax(S/PDIF),andOT=Optical(TOSLink)areaudioinputsonthe
backpaneloftheSwitcher.TheHDsufxmeansthattheembeddedHDMIaudio
isbeingused.
A/V Input
Displaysthecurrently
selectedA/Vinput
H1 HD -10db
None Direct

15
OPERATING THE 4X1 SWITCHER W/ AUDIO DECODING
Adjusting the Volume
UsetheVolume▲andVolume▼buttonstoincreaseordecreasetheaudio
outputgain.The▲or▼buttonsontheIRRemoteControlcanalsobeusedto
controltheaudiooutputgain.Audiogaincanbereducedtoaminimumof-60dB
andtoamaximumof+10dB.Eachtimethesebuttonsarepressed,thevolume
isincreasedordecreasedby1dB.
Muting the Audio Output
UsetheMutebuttononthefrontpanelorontheIRRemoteControltomutethe
audiooutput.Thedisplaywillindicateiftheaudioismuted.Todisablethemute
function,presstheMutebuttonagain.TheVolume▲andVolume▼buttons
canalsobeusedtodisablemuting.
Indicates
Audioismuted
Mutes
AudioOutput
H1 HD MUTE -10db
None Direct
Current
Volume
Increase
Volume
Decrease
Volume
H1 HD -10db
None Direct
TIP: Toincreaseordecreasetheaudiogainatafasterrate,press
andholddowneithertheVolume▲orVolume▼buttonuntilthe
desiredvolumeisachieved.

16
OPERATING THE 4X1 SWITCHER W/ AUDIO DECODING
Changing the Audio Processing Mode
SuccessivelypresstheMode / OKbuttononthefrontpaneltocyclethroughthe
differentaudioprocessingmodes.TheModebuttonontheIRRemoteControl
canalsobeusedtocyclethroughtheaudiomodes.

Seepage25foradescriptionofeachoftheavailableaudioprocessingmodes.
Main Menu
ToaccesstheMenuSystem,presstheMenubuttononthefrontpanel.The
front-paneldisplaywillchange:
PresstheVolume ▲orVolume ▼buttontocyclethroughthedifferentsub-
menus.PresstheMode / OKbuttontoaccessthecurrentlydisplayed
sub-menu.PresstheExitbuttontoreturntotheMainMenu.
Displays
currentaudio
mode
Presstochange
audiomode
H1 HD -10db
None Direct
Presstodisplay
Menusystem
Current
Sub-menu
Pressto
access
sub-menu
Pressto
returnto
MainMenu
MAIN MENU
SPEAKER SIZE