JBL VT4880ADP User Manual - Withanalogaudio
JBL Professional
DPAN–OptionalHiQnetNetworkInputModule
withAnalogAudio
See Figure 1c
TheDPANinputmodulefeaturesanalogaudioinputsandsophisticatedonboarddigitalsignalprocessing
technology.Precisionbandpasslimiting,pre-equalizationfiltersandautomaticself-testfunctionsensure
optimizedperformance.Inaddition,theDPANinputmoduleadds100MbEthernetnetworkingfunctionality
andHiQnetcompatibility.ItenablesremotecontrolandmonitoringviaHiQnetSystemArchitect™software.
NetworkControlandMonitoringisenabledbytheJBLDP-DCP(DrivePackDeviceControlPanel)supplied
withinHiQnetSystemArchitect.Networkcapabilitiesincludemonitoringofstatus,inputandoutputlevels,
clipping,temperature,loadfaultsandgainreduction.Additionalcontrolfeaturesavailableinsoftwareinclude
loadsupervision,dynamicprocessing,teninternaluserdefinedpresets,delays,onboardnoiseandsine-
wavegenerators,networkdeviceeventlogging,anduseralertmessaging.
CONTROLS
1)ENABLEALTPRESETbutton
a)Momentary,EnablesorDisablestheselected
function.FactoryALTPreset:
Onsubwooferapplications,thesubwooferlow-
passfilterfrequencyissetto80Hzandforfull
rangesystemsthehigh-passisraisedto80Hz.
(Kneeshapeandslopesaremodeldependent).
I
nternalControls-InputSensitivity-Position
Switch:Locatedonthebacksideofthefrontpanel,
fulloutputisachievedbyselectingeither+dBu
inonepositionor+0dBuintheotherposition.
Switchpositionsaremarkedwithsilkscreenonthe
PWB.
NOTE:Productisshippedfactorysettothe+0dBu
switchpositiontoprovideoptimalinputgainstructure
andheadroomformostprofessionalaudioequipment.
Changingthesensitivityswitchtothe+dBusettingisnot
recommendedunlessconnectionto-10dBVequipmentis
required.
INDICATORS
2)ENABLEALTPRESET
a)OrangeLEDilluminateswhenthefunctionis
enabled.
3)FAULT
a)RedLEDilluminatesduringanyfaultcondition.
4)THERMALProtection
a)OrangeLEDilluminatesduringthermallimiting:
ai)FLASHINGindicatesfirststageofthermallimiting,amplifieroutputlevelisreducedtoprevent
overheating.
aii)SOLIDilluminationindicatesthermalprotectionisinthesecondstageofprotectionand
amplifiershutdownmayoccurifimmediateactionisnottakentocorrecttheexternalreasonfor
excessiveheatingoftheamplifier.
5)READY
a)GreenLED,illuminateswhenthesystemisreadyforoperation
6)SIGNAL/CLIP
a)(Signal)GreenLED,detectsinputsignalabovethethresholdsetat–70dBu
b)(Clip)RedLED,Clipdetectionmonitorsinput,DSP,andeachamplifieroutputchannel.TheLED
changesfromGreentoRedwhenclippingTHDatanypointisdetected.
11)NETWORK100MBACTIVITY
a)TheActivityLEDindicatesdataactivityonthenetworkline.
12)NETWORK100MBLINK
a)TheLINKLEDindicatesthatthedataisat100Megabits.
13)DATA
a)YellowLEDFlashesforreceiveddatapacketaddressedtothisDPANdevice.
CONNECTORS
XLRconnectorsallowconnectivitytoananalogaudiosource.Thisinputcanbeusedasaback-upto
CobraNet®orasaprimaryaudiosourceintheabsenceofCobraNet®.
8)AUDIOIN
a)F-XLRActive0KOhmBalanced,10KOhmUnbalanced.
b)PinHot(PositivevoltageproducesoutwardconemotionofL.F.Transducers).
9)AUDIOOUT
a)M-XLRPassiveAudioPass-through.
b)PinHot(Positivevoltageproduces
outwardconemotionofL.F.Transducers).
10)HiQnet100MBNETWORKConnector
a)ThenetworkconnectorisastandardRJ-5connectorthatallowstheDPANtoconnecttoan
Ethernetnetwork.ConnectionismadeusingastandardCategory5cabletoanetworkswitchport.
MACADDRESSWINDOW
14)TheMACaddressisaunique1digithexadecimalhardwareaddressassignedtoeverynetwork
devicebythemanufacturerandisnotchangeablebytheuser.Thisuniquephysicaladdressenables
eachdeviceonthenetworktoidentifyandcommunicatedirectlywithotherdevicesconnectedtothe
network.
Figure 1c