Cisco TelePresence System Codec C40 Uživatelský manuál stáhnout pdf (Strana 13)

Cisco TelePresence System Codec C40 Physical interface guide

D14646.02 Codec C40 Physical Interface Guide TC4.0, November 2010.

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Audio inputs

Unused, but connected audio inputs should be set to

Off to avoid unwanted audio/noise.

Microphone/Line In 1–2 (XLR)

2 x Balanced XLR sockets, audio input 1–2.

Main connector: The Microphone/Line In 1 is the main

connector for the microphone.

All four microphone inputs are for balanced electret

microphones, 48V phantom powered via XLR

connectors.

The phantom powering of all four XLR sockets can

be individually switched off. The input will then be a

balanced line level input.

All Microphone/Line In 1–2 are equipped with

acoustic echo canceller.

Use Microphone/Line In 1–2 to connect to an external

microphone amplifier or an external mixer.

Default configuration: In default configuration,

all Microphone/Line In inputs are enabled and

configured as microphones.

Line In 1–2 (RCA)

2 x RCA sockets, audio input 1–2

Audio Line In 1–2 are used when connecting to PC

and to external playback devices, such as VCR’s or

DVD players.

Main connectors: The Line In 1 is the main connector

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

• Connect the right channel to Line In 2

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.

RCApin–out

External view of socket

RCA—Phono Plug (the Radio Corporation

of America)

2 x Line In2 x Microphone/

Line In

XLRpin–out

External view of socket

Pin 1: Gnd

Pin 2: Hot

Pin 3: Cold/neutral

XLR—Electrical Connector (Cannon XL

series with Rubber compound)

GNDSignal

Contents

Introduction

The physical interface

Connecting to the codec

The physical interface

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20 21

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