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. ©2006 Crestron Electronics, Inc.
Crestron CNXBRMO Bridging/Mono Interface Contents Bridging/Mono Interface: CNXBRMO 1 Introduction ............................................................................................................................... 1 Features and Functions ................................................................................................ 1 Applications................................................................................................................. 1 Internal Block Diagram .......
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 tha
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 7. Internal Block Diagram of the CNXBRMO Specifications Specifications for the CNXBRMO are listed in the following table.
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.
Bridging/Mono Interface Crestron CNXBRMO CNXBRMO Overall Dimensions 5.75 in (14.61 cm) 1 2 4 3 0.75 in (1.91 cm) 2.54 in (6.45 cm) 0.75 in (1.91 cm) 5.25 in (13.34 cm) 5 6 7 1.26 in (3.19 cm) 4 • Bridging/Mono Interface: CNXBRMO Operations Guide – DOC.
Crestron CNXBRMO Bridging/Mono Interface Connectors, Controls & Indicators # CONNECTORS, CONTROLS & INDICATORS DESCRIPTION 1 OUTPUT (L & R) 2 STEREO/MONO SWITCH 3 INVERTED OUTPUT (L & R) 4 PWR LED 5 INPUT (L & R) 6 GROUND 7 NET1, 2 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. Two-position toggle switch used to select between stereo and mono output.
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).
Crestron CNXBRMO Bridging/Mono Interface Setup Network Wiring When wiring the network, consider the following: • Use Crestron Certified Wire. • Use Crestron power supplies for Crestron equipment. • Provide sufficient power to the system. CAUTION: Insufficient power can lead to unpredictable results or damage to the equipment. Please use the Crestron Power Calculator to help calculate how much power is needed for the system (http://www.crestron.com/calculators).
Bridging/Mono Interface Crestron CNXBRMO NOTE: When bridging, no more than two CNXBRMO units should be connected to a single CNAMPX-16X60 (or CNAMPX-12X60). When implementing a two CNXBRMO bridge, Crestron recommends connecting one to ROOM INPUTS 1 & 2 and connecting the other to ROOM INPUTS 7 & 8 on the CNAMPX-16X60 (or ROOM INPUTS 5 & 6 on the CNSMPX-12X60). Failure to make these connections in this particular application may result in damage to the amplifier.
Operations Guide – DOC.
10 • Bridging/Mono Interface: CNXBRMO CNX-PAD8A Cresnet Distribution Block 2-Series Control System CNXBRMO Used as a Mono Bridge RIGHT SPEAKER SPEAKERS MUST BE CAPABLE OF HANDLING MORE THAN 200 WATTS LEFT SPEAKER NOTE: IN A BRIDGED CONFIGURATION, ONLY USE THE CRESTRON CNAMPX-16X60 (OR CNAMPX-12X60) SET TOGGLE SWITCH TO MONO CNAMPX-16x60 Bridging/Mono Interface Crestron CNXBRMO Operations Guide – DOC.
Crestron CNXBRMO Bridging/Mono Interface All Summed Mono To use a single CNXBRMO to provide four mono output signals (two with normal polarity and two with inverted polarity) from a single stereo source, simply set the Stereo/Mono switch on the CNXBRMO to Mono and make the connections shown in the illustration on the next page. Apply power to the audio distribution system last.
12 • Bridging/Mono Interface: CNXBRMO CNX-PAD8A Cresnet Distribution Block 2-Series Control System SPEAKER A NOTE: IF MORE THAN ONE SPEAKER IS PLACED IN THE SAME ROOM, KEEP SPEAKER A WITH D AND B WITH C, ETC. SET TOGGLE SWITCH TO MONO CNXBRMO Used to Provide All Summed Mono SPEAKER B SPEAKER C SPEAKER D CNAMPX-16x60 Bridging/Mono Interface Crestron CNXBRMO Operations Guide – DOC.
Crestron CNXBRMO Bridging/Mono Interface Problem Solving Troubleshooting The following table provides corrective action for possible trouble situations. If further assistance is required, please contact a Crestron customer service representative. CNXBRMO Troubleshooting TROUBLE POSSIBLE CAUSE(S) CORRECTIVE ACTION PWR LED does not illuminate. CNXBRMO is not receiving power. Hum on audio. Grounding problem. Verify cable plugged into NET port is the correct type and that it is secure.
Bridging/Mono Interface Crestron CNXBRMO Check Network Wiring Use the Right Wire In order to ensure optimum performance over the full range of your installation topology, Crestron Certified Wire and only Crestron Certified Wire may be used. Failure to do so may incur additional charges if support is required to identify performance deficiencies because of using improper wire. Calculate Power CAUTION: Use only Crestron power supplies for Crestron equipment.
Crestron CNXBRMO Bridging/Mono Interface NOTE: 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). Strip and Tin Wire When daisy-chaining Cresnet units, strip the ends of the wires carefully to avoid nicking the conductors.
Bridging/Mono Interface Crestron CNXBRMO available as manual updates. These updates are solely electronic and serve as intermediary supplements prior to the release of a complete technical documentation revision. Check the Crestron website periodically for manual update availability and its relevance. Updates are identified as an “Addendum” in the Download column. 16 • Bridging/Mono Interface: CNXBRMO Operations Guide – DOC.
Crestron CNXBRMO Bridging/Mono Interface Return and Warranty Policies Merchandise Returns / Repair Service 1. No merchandise may be returned for credit, exchange or service without prior authorization from CRESTRON. To obtain warranty service for CRESTRON products, contact an authorized CRESTRON dealer. Only authorized CRESTRON dealers may contact the factory and request an RMA (Return Merchandise Authorization) number.
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Crestron Electronics, Inc. 15 Volvo Drive Rockleigh, NJ 07647 Tel: 888.CRESTRON Fax: 201.767.7576 www.crestron.com Operations Guide – DOC. 8158A (2002179) 07.06 Specifications subject to change without notice.
