Crestron CNXBRMO Manuel utilisateur

Crestron CNXBRMO

Bridging/Mono Interface

Operations Guide

This document was prepared and written by the Technical Documentation department at:

Crestron Electronics, Inc.

15 Volvo Drive

Rockleigh, NJ 07647

1-888-CRESTRON

All brand names, product names and trademarks are the property of their respective owners.

Crestron CNXBRMO Bridging/Mono Interface

Contents

Bridging/Mono Interface: CNXBRMO 1

Introduction ...............................................................................................................................1

Features and Functions................................................................................................1

Applications.................................................................................................................1

Internal Block Diagram ...............................................................................................2

Specifications ..............................................................................................................2

Physical Description....................................................................................................3

Industry Compliance ...................................................................................................6

Setup ..........................................................................................................................................7

Network Wiring........................................................................................................... 7

Hardware Hookup ....................................................................................................... 7

Problem Solving ......................................................................................................................13

Troubleshooting......................................................................................................... 13

Check Network Wiring..............................................................................................14

Reference Documents................................................................................................15

Further Inquiries ........................................................................................................ 15

Future Updates .......................................................................................................... 15

Return and Warranty Policies ..................................................................................................17

Merchandise Returns / Repair Service ...................................................................... 17

CRESTRON Limited Warranty.................................................................................17

Operations Guide – DOC. 8158A Contents •i

Crestron CNXBRMO Bridging/Mono Interface

Bridging/Mono Interface:

CNXBRMO

Introduction

Features and Functions

• Designed for use with a Crestron®CNX-PAD8A or

CNX-BIPAD8 audio distribution processor

• Facilitates bridging of a CNAMPX-16X60 or

CNAMPX-12X60 for increased power output

• Can be configured to produce a summed, mono signal with up

to four outputs (two with inverted polarity) from a single stereo

source

Applications

The CNXBRMO accepts the stereo signal from a single room output and

splits that signal into two stereo outputs, one with normal polarity and the

other with inverted polarity. These two outputs connect to the inputs of

two adjacent stereo channels on the CNAMPX amplifier. The result is

that these two channels can be used to drive a stereo pair of loudspeakers

with over 200 Watts of output power per speaker.

On either amplifier model only the first two adjacent channels and the

last two adjacent channels are bridgeable. Therefore no more than two

CNXBRMO interfaces may be used with a single CNAMPX amplifier.

The CNXBRMO can also be configured to produce a summed mono

signal.

Operations Guide – DOC. 8158A Bridging/Mono Interface: CNXBRMO •1

Bridging/Mono Interface Crestron CNXBRMO

Internal Block Diagram

The following diagram represents the signal routing abilities of the

CNXBRMO. For more information refer to “Hardware Hookup” on page

Internal Block Diagram of the CNXBRMO

Specifications

Specifications for the CNXBRMO are listed in the following table.

CNXBRMO Specifications

SPECIFICATION DETAILS

Cresnet®power usage <1 Watt @ 24 Volts DC

Environmental

Temperature 41º to 122ºF (5º to 50ºC)

Humidity 10% to 90% RH

(non-condensing)

Enclosure Black metal, surface mount box

with (2) integral mounting flanges

Dimensions

(including connectors)

Height 1.26 in (3.19 cm)

Width 5.75 in (14.61 cm)

Depth 2.54 in (6.45 cm)

Weight 0.54 lbs (0.24 kg)

2 •Bridging/Mono Interface: CNXBRMO Operations Guide – DOC. 8158A

Crestron CNXBRMO Bridging/Mono Interface

Physical Description

This section provides information on the connections, controls and

indicators available on your CNXBRMO.

CNXBRMO Physical View

Operations Guide – DOC. 8158A Bridging/Mono Interface: CNXBRMO •3

Bridging/Mono Interface Crestron CNXBRMO

CNXBRMO Overall Dimensions

1.26 in

(3.19 cm)

2.54 in

(6.45 cm)

0.75 in

(1.91 cm)

5.25 in

(13.34 cm)

0.75 in

(1.91 cm)

123

5.75 in

(14.61 cm)

4 •Bridging/Mono Interface: CNXBRMO Operations Guide – DOC. 8158A

Crestron CNXBRMO Bridging/Mono Interface

Connectors, Controls & Indicators

# CONNECTORS,

CONTROLS &

INDICATORS

DESCRIPTION

1 OUTPUT (L & R)

Two RCA jacks are used to

connect to a room/zone

amplifier to provide direct left

and right line-level audio.

Output impedance: 600 Ω;

Maximum output level: 2.5

Volts RMS.

2 STEREO/MONO

SWITCH

Two-position toggle switch

used to select between stereo

and mono output.

3 INVERTED OUTPUT

(L & R)

Two RCA jacks are used to

connect to a room/zone

amplifier to provide inverted left

and right line-level audio.

Output impedance: 600 Ω;

Maximum output level: 2.5

Volts RMS.

4 PWR LED Indicates 24 Volts DC power

supplied from Cresnet control

network.

5 INPUT (L & R)

Two RCA jacks are used to

connect to the CNX-PAD8A or

CNX-BIPAD8 to accept left and

right line-level audio.

Input impedance: 10 kΩ;

Maximum input level: 2.5 Volts

RMS.

6 GROUND

(1) 6-32 screw, chassis ground

lug.

7 NET1, 2

(1) 6-pin RJ-11 female;

connects to Cresnet control

network

Operations Guide – DOC. 8158A Bridging/Mono Interface: CNXBRMO •5

Bridging/Mono Interface Crestron CNXBRMO

1. Crestron provides a two-foot cable assembly with the unit, part number 15717, for

network connection.

2. Use Creston’s six-conductor modular cable when connecting to the NET port.

Standard telephone cables are wired in a crisscross fashion and are not compatible

with Crestron equipment. Refer to the latest version of Network Modular Cable

Requirements (Doc. 5628), which is available from the Crestron website

(http://www.crestron.com/manuals).

Industry Compliance

As of the date of manufacture the CNXBRMO has been tested and found

to comply with specifications for CE marking and standards per EMC

and Radiocommunications Compliance Labelling.

NOTE: This device complies with part 15 of the FCC rules. Operation is

subject to the following two conditions: (1) this device may not cause

harmful interference and (2) this device must accept any interference

received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits for a

Class B digital device, pursuant to part 15 of the FCC Rules. These limits

are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses

and can radiate radio frequency energy and if not installed and used in

accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will

not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by

turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

 Reorient or relocate the receiving antenna.

 Increase the separation between the equipment and receiver.

 Connect the equipment into an outlet on a circuit different from

that to which the receiver is connected.

 Consult the dealer or an experienced radio/TV technician for help.

6 •Bridging/Mono Interface: CNXBRMO Operations Guide – DOC. 8158A

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