Cisco TelePresence System Codec C90 Посібник - Сторінка 16

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Cisco TelePresence System Codec C90

Contents

Audio inputs,

continued...

Unused, but connected audio inputs must be

set to Off to avoid unwanted audio/noise.

Line In 1–4 (RCA)

4 x RCA sockets, audio input 1–4

Audio Line In 1–4 are used when connecting

to PC and to external playback devices, such

as VCR's or DVD players.

Main connectors. The Line In 1 (left) and Line

In 2 (right) are the main connectors to a PC.

Stereo. For systems with stereo I/O the audio

inputs can be configured in stereo pairs:

•

Connect the left channel to Line In 1 or 3

•

Connect the right channel to Line In 2 or 4

Default configuration for Line In 1–2. In the

default configuration Line In 1 and 2 are

configured as stereo inputs for external

playback devices, such as a PC.

Default configuration for Line In 3–4. In the

default configuration Line In 3 and 4 are

configured as stereo input pairs. The two

inputs are paired with Line Out 3 and 4

respectively.

This pairing will avoid feedback situations that

can arise when playback/recording devices

are in standby mode (Loop suppression).

Line In 3 and 4 are used with external

playback devices as VCR's and DVD players.

D14644.03 Codec C90 Physical Interface Guide TC4.1, February 2011.

Introduction

Connecting to the codec

RCA pin-out

External view of socket

Signal

GND

RCA - Phono Plug (the Radio Corporation

of America)

The physical interface

4xLine In

Physical interface guide