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SerVision MVG 400 System Guide

Installing the MVG 400 System 23

Figure 13: Connecting an activator that has its own power supply

Connecting Microphones

Up to two microphones can be connected to the unit, one active and one passive. When one or

two microphones are connected, you can hear and record sound along with video images. The

sound from a microphone can be associated with any or all of the cameras. (For information

about linking the sound with a camera, see Camera Settings, page 96.)

Microphones can be connected to one or both of the Audio In connectors (Ain1 and/or

Ain2). Passive microphones, which require external amplification, must be connected to

Ain1. Active (self-amplifying) microphones must be connected to Ain2. Microphones with an

output voltage of 1 Vrms or 1.41 Peak are supported.

To connect a microphone:

1. Install the microphone in the desired location.

2. Plug the microphone connector into the desired Audio In connector (Ain1 or Ain2).

About Speakers

The MVG 400 unit contains a built-in, 1-watt, internal speaker, which is located on the right

side of the unit. You can also connect an external speaker or headphones to the unit. The

speakers (and headphones) allow you to hear audio that is transmitted from one of the client

applications. The external speaker or headphones can be used in addition to the internal

speaker or instead of it. (For additional information, see Configuring General System Settings,

page 48.)

Out1 Out2

+ - + -

ctivators terminal bloc

MVG 400 rear panel

Power

Activator

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SerVision MVG 400 Guide de l'utilisateur Page 23