ETS SM1 Series Manual de usuario

ETS Inc

211 Conchas SE Albuquerque, NM 87123

Phone 505-888-3923 Fax 505-888-3926 E-mail: [email protected]

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ETS Inc

211 Conchas SE Albuquerque, NM 87123

Phone 505-888-3923 Fax 505-888-3926 E-mail: [email protected]



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LINELevelMicrophoneshavebuiltinpreampsandrequirepowertooperateasshowninFigure1.In

somecasesit’seasiertouseaninterfacebox(SMEA‐1,SMA1‐LPEA,SM2,etc.)topoweraSM1

microphoneandconnecttoIPCameraorDVR.

Figure1ashowdifferenttypesof3.5mmjacksandaRCAjackthatareusedtoconnecttoIPCameras.

TheAvigilonConnectionsshowsthe3.5mmTRRSjackwhichmeansTip,Ring1,Ring2andSleeve.Ifjust

usingamicrophonethenTipisusedforAudioINandRing2isusedforground.With2wayAudiouse

samemicrophoneconnectionsanduseSleeveforAudioOutandRing2forground.Note:groundsare

sharedbetweenaudioinandaudiooutthroughRing2.

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Figure2isanexampleofdifferenttypesoflabelsonterminalblockconnectionsonIPCamerasfor

microphoneLineINandMICINinputs.The“someexamples”aresomeofthetypesoflabelweseenon

IPCameraswithterminalblocks.

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AMICLevelMicrophonehasnopreampandispoweredbytheIPCamera.Inmostcases,MICLevel

Microphoneshaveastereo3.5mmmaleconnectorwiththeaudiosignalonTIPandRINGwhicharetied

togetherandSLEEVEisground.SomeIPCamerashavemonojacksformonauralMICInputs.CheckIP

camerasspecificationsheetoruser’smanualtoverifyinputismonauralinput.

Figure3showshowtoconnectanETSML1seriesmicrophonetoanIPCamera.

ETS Inc

211 Conchas SE Albuquerque, NM 87123

Phone 505-888-3923 Fax 505-888-3926 E-mail: [email protected]





ETS Inc

211 Conchas SE Albuquerque, NM 87123

Phone 505-888-3923 Fax 505-888-3926 E-mail: [email protected]





Problem: No audio from microphone or speaker with ETS interface box and IP camera

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Possible cause: If your camera utilizes a 3.5mm MONO audio input or audio output the

provided STEREO 3.3mm patch cords cause the audio signal to be shorted. To

correct it, you must cut a wire inside the SMEA-1 or SMA1-LP-XX interface box. The

photos below show how the 3.5MM jacks are wired inside the interface. Remove the

four screws and cover of the interface. Then, locate the jack(s) and cut wire as shown

on the 3.5mm jack(s) below and your system should work. If you have any further

issues or questions, please call technical support at 505-888-3923

M-F 9:50 Mountain time.

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3.5mm jack wire uncut 3.5mm jack wire cut

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