DVTEL Ariel EN-204, User And Installation Manual

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Installing and Connecting the Encoder
11
4.2.7 Connecting Audio Inputs and Output for Two-Way Audio Communication
The encoder’s web interface can be used to enable two-way audio communication between a
technician located near the encoder in the field and an operator viewing the live video on a PC
running the encoder’s web interface.
The LINE IN jack enables the technician to connect a microphone to the encoder. The AUDIO OUT
jack enables the technician to listen to the operator via loudspeakers located near the encoder.
The audio output signal from the unit provides a Line Out 600Ω impedance level to an amplifier,
which drives the loudspeakers.
Figure 11: Two-Way Audio Connections Using the Web Client
To connect a microphone to the encoder for two-way communication
Insert the plug on the microphone cable into the LINE IN jack on the front panel of the unit.
See Figure 1: EN-204 Front Panel (page 3).
Note:
The microphone must meet the following specifications:

Input impedance: 1k Ω
 Maximum input level: 2V p-p
To connect a loudspeaker to the encoder for two-way communication
Connect AUDIO OUT jack on the front panel to a cable from an amplifier.
Connect the amplifier to the loudspeakers.