Euphonix MADI MI715 User manual

Euphonix MADI Converters Manual
MI715Analog/AEStoMADI,MO705MADItoAnalog/AES
DocumentRevision:1.1
ReleaseDate:Jan,2009
PartNumber:840‐10631‐01
EuphonixInc.
220PortageAve.
PaloAlto,California94306
Phone:650‐855‐0400
Fax:650‐855‐0410
e‐mail:[email protected]
Web: http://www.euphonix.com

Intheinterestofcontinuedproductdevelopment,EuphonixInc.reservestherighttomake
improvementsinthismanualandtheproductsitdescribesatanytime,withoutnoticeor
obligation.
System5,S5,MaxAir,PatchNet,eMix,EuCon,R‐1,AudioDeck,StudioHubaretrademarks
ofEuphonix,Inc.
©2002Euphonix,Inc.Allrightsreservedworldwide.Nopartofthispublicationmaybe
reproduced,transmitted,transcribed,storedinaretrievalsystem,ortranslatedintoany
languageinanyformbyanymeanswithoutwrittenpermissionfromEuphonix,Inc.

Euphonix MADI Converters Operation Manual
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TableofContents
Chapter1: Introduction..................................................................................................... 4
1.1 MI715/MO705......................................................................................... 4
1.2 PowerOnSequence ................................................................................. 5
1.3 SafetyandPrecautions............................................................................ 5
1.3.1 220,230,240VACOperation..................................................... 5
Chapter2: MI715andMO705Converters .................................................................. 7
2.1 Features.................................................................................................... 7
2.2 Applications............................................................................................. 7
2.3 MI715/MO705FrontPanel ...................................................................... 8
2.4 MI715RearPanel ..................................................................................... 9
2.5 MO705RearPanel ................................................................................. 11
2.6 Synchroniztion........................................................................................12
2.6.1MI715...................................................................................... 12
2.6.2 MO705 ..................................................................................... 12
2.7 Specifications ......................................................................................... 13

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Chapter1:Introduction
1.1 MI715/MO705
TheMI715andMO705convertersprovideMADIconversiontointerfaceto/from
analogandAESequipmentsuchasconsoles,tapedecks,microphonepreamplifiers
andotherdevices.Bothconvertersaretworackspaceshighandarehousedinastain‐
lesssteelchassiswithmachined,heavyaluminumfrontpanels.
TheMI715convertsincominganalogsignalsto24‐bitMADIdigitalsignalsthatcapture
theinput’scompletedynamicrange.EachmainAES/EBUinputisautomaticallyevaluat‐
edforsample‐rateconversion.Theincomingsamplerateiscomparedwiththeinternal
rate.Iftheyarethesame,noconversionoccurs.Iftheratesdiffer,sample‐ratecon‐
versionisactivatedandpersistsuntilanewinputisappliedortheinternalsamplerate
changes.Thesample‐rateconversionrangeis32–56kHz.Inadditiontothe8XLRcon‐
nectorsforanaloginputsand8XLRconnectors/2D‐SubconnectorsforAESinputs.The
MO705convertsincomingMADIsignalsto8analogchannelsand8AESstereopairs.
The 16 digital outputs (8 pair) can be bit-depth converted from 24 to 20 or 16 bits.

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1.2 PowerOnSequence
Werecommendpoweringuptheconvertersonlyafterverifyingthepresenceofa
validsyncsignal.Afterpoweringuptheconverters,theSampleRateandSampleRate
SourceLEDsblinkastheconvertersensestheincomingSampleRatesourceandSam‐
pleRate.Werecommendmonitoringthepower‐upsequencetoverifytheconverters
havecorrectlyauto‐sensedthedesiredSampleRateSourceandSampleRate.
1.3 SafetyandPrecautions
TheMI715andMO705complywithCE’sEN60950ElectricalSafetyStandards.
1.3.1 220,230,240VACOperation
NOTE: Beforeconnectingpowertotheconverters,changethefuseandvoltageselectorto
theappropriate220/230/240VACsettings.
Theconverterspreservetheirsignalqualityusinglinearpowersuppliesthatmustbe
manuallyswitchedbetween115and230VAC.Theunitsareshippedsetfor115VAC.
Movethered,two‐positionswitchnearthepowerentrymoduleoftheconvertersto
the230 VACposition(down)for220/230/240VACoperation.
Eachunitusesa0.630Afusefor115VACoperation.Tooperateat220,230,or
240 VAC,installthespare0.315Afuseprovidedinthepowerentrymodulefuse‐holder.
Toaccessboththeactiveandthesparefuse:
1. Turntheunit’spoweroff.
2. RemovetheIECpowercablefromthepowerentrymodule.
3. Useasmallscrewdrivertoopenthefusetraybelowtheelectricalinlet.
Theactivefuseistotherearofthetray.Thesparefuseisinthetrayslotclos‐
esttothefront.Pullthefusesthroughtheplasticconstrictionpointthatholds
themfromfallingout.
NOTE: Neverdisconnectthesafetygroundtotheconverters.

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PowerCordRequirements
TheconvertersaresuppliedwithNorthAmericanIECpowercords.Ifthiscordis
changedtoallowadifferentplugconfiguration,itistheresponsibilityoftheuserto
selectanapprovedpowercordwithproperconstructionmaterial,currentcapacity,
flexibility,andstrengthcharacteristics.
Cooling
Westronglyrecommendprovidingadequateventilationtotheconverters,particular‐
lywheninstalledinarack.TheMI715andMO705convertersinparticularshouldhave
spaceleftaboveandbeloweverytwounitssoheatcanproperlydissipate

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ChapterϮ:MI715/MO705Converters Features
Professionalgradeaudioconversionisaccomplishedutilizing128timesover‐sampled
noise‐shapeddelta‐sigmatechniques.Theanalogtodigitalconversionemploysa
multi‐bitmodulararchitecturewhilethedigitaltoanalogconversionemploysasingle‐
bitmodulatorarchitecture.Low‐jitterreferenceclocksareprovidedutilizingdigital
PLLtechniqueswithVCXOandVCOoscillators.
Theanaloginputsandoutputscanbecalibratedfromthefrontpanelofeachunit.
AES/EBUandWordClockexternalsyncinputsonbothunitsprovidesynchronization
todigitalsystems.SampleRateSourceandSampleRateareautomaticallysensedby
bothunits.Supportedsampleratesinclude44.1,48,88.2,and96kHz.Inaddition,pull‐
upandpull‐downratesforthestandardsamplerates,aswellascustomsamplerates
areavailable.
Ϯ.Ϯ Applications
InadditiontotheirstandarduseinaEuphonixdigitalsystem,theMI715andMO705
canbeusedasstand‐aloneconverters.WhenusedwiththeEuphonixSH612Studio
Hub,thisisapowerfulconversionandMADIroutingsystemthatcanbeusedtointer‐
facebetweenananalogconsoleandanotherwiseall‐digitalfacility(i.e.,TVbroadcast
facility).
NOTE: MADIcablescanbeextendedto50m(164ft),allowingremotelocationofthecon‐
verters.

Euphonix MADI Converters Operation Manual MI715/MO705 Converters Features
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Ϯ.ϯMI715/MO705FrontPanel
Thissectiondiscussesbothfrontpanelsandnotestheirfewdifferences.
TrimPotsAccess:Onetrimpotadjussthemaximumanaloginput/outputlevelof
channels1–8in2‐dBstepsbetween+12and+26dBu.
SampleRateLEDs:TheseLEDsindicatethesampleratetowhichtheconverteriscur‐
rentlylocked.Sampleratesareauto‐sensedbutcanbemanuallyselectedonthe
AM713.Supportedsampleratesare96kHz,88.2kHz,48kHz,44.1kHz,andCustom
ratesfromexternalsources.
SampleRateSourceLEDs:TheseLEDsindicatetheformatoftheSampleRateSource
towhichtheconverteriscurrentlylocked.SampleRateSourcecanbeauto‐sensedor
manuallyselected.Ifanexternalsourceisnotdetected,theMI715revertstoInternal
sync;theMO705mutesitsoutputs.Ifamanuallyselectedsourceisnotpresent,the
SampleRateSourceindicatorblinks.
•AES:SampleRatelockedtoAESInput.
•Word:SampleRatelockedtoWordClockInput.
•Internal(MI715only):SampleRatelockedtoitsowninternalcrystal.
•MADI(MO705only):SampleRatelockedtoMADI.
•Auto:SampleRateSourcehasbeenauto‐sensed.
TheseLEDsappearinthesameorderinwhichsignalsaretestedfortheirpresence.
Thisdetectionprocedureoccurswhentheconvertersarepoweredon.TheSample
Rate(MI715only)andSampleRateSourcecanalsobeselectedmanually.ManualSe‐
lectionButtons:ThebuttonbeloweachSampleRateLEDrowmanuallyselectsthe
samplerate.TheMI715alsoallowsmanualselectionoftheSampleRateSource.
PowerSwitch:On/Offswitch.
NOTE: Therearenouser‐serviceablepartsintheconverters.

Euphonix MADI Converters Operation Manual MI715/MO705 Converters Features
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Ϯϰ MI715RearPanel
MA715RearPanel
InputVoltageSelector:Thisredswitchallowstheunittooperateineither110/115
VACor220/230/240VACenvironments.Afusemustalsobechangedfor220/230/240
VACoperation(seepage5).Unitsareshipped setandfusedfor110/115VAC.
PowerConnector(IEC)andFuseTray:TheIECpowerconnectoracceptsstandardIEC
powercords.Thefusetraycontainsboththeactivefuseandasparefusefor220/230/
240VACoperation.Seepage6forinstructionsonhowtochangethefusefor220/
230/240VACoperation.
AnalogInputs(femaleXLR):8balanced,analoginputsonXLRconnectors.Inputsen‐
sitivityissetfromthefrontpanel.
AES/EBUDigitalInput(femaleXLR):8StereoAES/EBUdigitalinputonXLRconnectors
ParallelAES/EBUDigitalInputs(femaleDB25):Two8‐channeldigitalconnectors
functioninparallelwithXLRdigitalinputs,andshouldnotbeusedsimultaneously
AESSyncIn(femaleXLR):MasterclockinputfortheconverterwhenusingAESasSam‐
pleRateSource.
AESSyncThru(maleXLR):OutputsthesamesignalconnectedtoAESSyncIn.
WordIn(BNC):MasterclockinputfortheconverterwhenusingWordClockasSam‐
pleRateSource.
WordOut(BNC):OutputsaWordclocksignalsynchronizedtotheSampleRate
Source.InthepresenceofanexternalWordclockinput,thisconnectorprovides
aregeneratedversionofthatinputsignal.Withoutanexternalsampleratesource,
thisconnectoroutputstheinternallygeneratedclocksignal.

Euphonix MADI Converters Operation Manual MI715/MO705 Converters Features
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MADIOut(BNC):Outputsthedigitalaudiosignal.
•1–8: Analoginputs
•9–24: AESinputs
