meyer sound MDM-832 Distribution Module Instruction Manual

Instruction Manual for meyer sound models including: MDM-832 Distribution Module, MDM-832, Distribution Module, Module

MDM-832 Operating Instructions

05.245.005.02 A

05.245.005.02, A

Meyer Sound Laboratories Inc.

Meyer Sound MDM

Контроллер акустических систем Meyer Sound MDM купить в Москве с доставкой

File Info : application/pdf, 36 Pages, 7.73MB

Meyer Sound MDM

OPERATING INSTRUCTIONS MDM-832 Distribution Module
https://muzcentre.ru/

POWER

Keep these important operating instructions. Check www.meyersound.com for updates.

© 2016 Meyer Sound Laboratories MDM-832 Operating Instructions, PN 05.245.005.02 A
The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or inaccuracies that may appear in this manual. Except as permitted by applicable copyright law, no part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise, without prior written permission from Meyer Sound.
MDM-832, MJF-212A, MJF-208, LEOPARD, 900-LFC, UPA-1P, RMS, Compass RMS, and all alpha-numeric designations for Meyer Sound products are trademarks of Meyer Sound. Compass, Galileo, Callisto, Meyer Sound, and the Meyer Sound wave logo are registered trademarks of Meyer Sound Laboratories Inc. (Reg. U.S. Pat. & Tm. Off.). All third-party trademarks mentioned herein are the property of their respective trademark holders.
ii

CONTENTS

Chapter 1: Introduction

How to Use This Manual

MDM-832 Distribution Module

Supported Loudspeakers

Chapter 2: MDM-832 Power Requirements

AC Power Distribution

MDM-832 Voltage Requirements

MDM-832 Current Requirements

Powering On the MDM-832

Electrical Safety Guidelines

Chapter 3: MDM-832 Front and Rear Panels

MDM-832 Front Panel

MDM-832 Rear Panel

Chapter 4: Powering Loudspeakers with the MDM-832

Cable Configurations

RMS Network

Chapter 5: MDM-832 System Examples

(6) MJF-208 and (2) MJF-212A (115 V, 208 V, or 230 V)

(12) LEOPARD and (4) 900-LFC (208 V, or 230 V)

(8) UPA-1P (115 V, 208 V, 230 V)

Appendix A: Composite Cable

Appendix B: Orienting the MDM-832 Rackmount Brackets

Appendix C: MDM-832 Specifications

iii

CONTENTS iv

CHAPTER 1: INTRODUCTION

HOW TO USE THIS MANUAL
Make sure to read these instructions in their entirety before configuring an MDM-832. In particular, pay close attention to material related to safety issues.
As you read these instructions, you will encounter the following icons for notes, tips, and cautions:
NOTE: A note identifies an important or useful piece of information relating to the topic under discussion.

MDM-832 DISTRIBUTION MODULE
The MDM-832 distribution module routes up to eight channels of AC power, balanced audio, and RMSTM to multiple Meyer Sound self-powered loudspeakers, further enhancing portability and ease of use for self-powered on-stage monitors or loudspeaker systems. Third-party composite cables are available to distribute both AC power and balanced audio with a single cable, streamlining setups and teardowns.

TIP: A tip offers a helpful tip relevant to the topic at hand.

CAUTION: A caution gives notice that an ! action may have serious consequences and could cause harm to equipment or personnel, or could cause delays or other problems.

MDM-832 Front Panel (Shown with XLR 5-pin Output Connectors)

Information and specifications are subject to change. Updates and supplementary information are available at www.meyersound.com. Meyer Sound Technical Support is available at: Tel: +1 510 486.1166 Tel: +1 510 486.0657 (after hours support) Web: www.meyersound.com/support Email: techsupport@meyersound.com

MDM-832 Rear Panel
The MDM-832 simplifies distribution by reducing cable clutter in systems that require a reduced footprint, such as onstage monitoring.
The MDM-832 receives balanced audio from eight rearpanel XLR 3-pin female input connectors and routes the audio to eight front-panel XLR male output connectors.
Audio outputs are available as XLR 3-pin or XLR 5-pin connectors. 3-pin connectors carry balanced audio. 5-pin connectors allow the use of third-party composite cables carrying both balanced audio and RMS. The rear panel includes an RMS network connector (and terminator) for routing RMS signals from the eight front-panel RMS connectors.
AC power is received from a single rear-panel powerCON® 32 connector and routed to two sections, each with four front-panel powerCON 20 connectors.

CHAPTER 1: INTRODUCTION
The MDM-832 features flexible routing, with toggle switches that route audio inputs to corresponding audio outputs only, or to adjacent, contiguous audio outputs. For example, audio input 1 can be routed to audio outputs 1 and 2, and audio input 3 can be routed to audio outputs 3 and 4. Another example is to route audio input 1 to audio outputs 14, and audio input 5 to audio outputs 58. All eight audio inputs can also be routed directly to their corresponding audio outputs. A single audio output connector can drive multiple loudspeakers equipped with loop outputs. The front panel features two 15 A breaker switches for enabling AC to outputs 14 and 58. AC voltage is indicated by LEDs for each circuit. Each group of four outputs is capable of driving groups of loudspeakers that have a sum total Maximum Long-Term Continuous Current draw equal to or below the rating of the MDM-832 breakers. The 2-space rackmount MDM-832 has adjustable, reversible rack ears, allowing the front panel to be positioned at either the front or rear of the rack. Depth adjustment allows the front panel to sit in a recessed position, or flush to the rack.
CAUTION: Before connecting and applying ! power to the MDM-832 be sure to read the included Safety Instructions and to heed all warnings in those instructions. Product Safety and Declaration of Conformity information is also available at www.meyersound.com.
SUPPORTED LOUDSPEAKERS
The MDM-832 is an ideal solution for power and signal distribution to small- and medium-sized AC-powered Meyer Sound loudspeakers with auto-ranging input voltage selection. The MDM-832 can power groups of loudspeakers which have a sum total maximum long-term continuous current draw equal to or below the rating of the corresponding breaker. Load ratings are indicated adjacent to the breaker switches on the front panel. For more information on powering loudspeakers, see Chapter 4, "Powering Loudspeakers with the MDM-832" and Appendix C, "MDM-832 Specifications."
6

CHAPTER 2: MDM-832 POWER REQUIREMENTS

The MDM-832 distribution module combines signal routing with power capabilities. Understanding power distribution, voltage and current requirements, and electrical safety guidelines is critical to the safe operation of the MDM-832.
For additional information about calculating required electrical service and total system load for Meyer Sound power distribution modules and loudspeakers, refer to www.meyersound.com.
CAUTION: Before connecting and applying ! power to the MDM-832 be sure to read the included Safety Instructions and to heed all warnings in those instructions. Product Safety and Declaration of Conformity information is also available at www.meyersound.com.
AC POWER DISTRIBUTION
All components in an audio system (self-powered loudspeakers, mixing consoles, and processors) must be properly connected to an AC power distribution system, ensuring that AC line polarity is preserved and that all grounding points are connected to a single node or common point using the same cable gauge (or larger) as the neutral and line cables.
NOTE: Improper grounding of connections between loudspeakers and the rest of the audio system may produce noise or hum, or cause serious damage to the input and output stages of the system's electronic components.
CAUTION: Before applying AC power to any ! Meyer Sound self-powered loudspeaker, make sure that the voltage potential difference between neutral and ground is less than 5 V AC when using single-phase AC wiring.
CAUTION: Make sure the voltage received by ! the MDM-832 remains within its 100240 V AC operating window. In addition, the ground line must always be used for safety reasons and the line-to-ground voltage should never exceed 250 V AC (typically 120 V AC from line to ground).

120 V AC, 3-Phase Wye System (Two Lines)
Line-Line-Ground
Figure 1 illustrates a 120 V AC, 3-phase Wye distribution system with three MDM-832 distribution modules. Each MDM-832 is connected to two lines and a common ground line. This configuration is possible because the MDM-832 can tolerate elevated voltages from the ground line and does not require a neutral line. This system delivers 208 V AC to each module.

MDM-832 unit 1
(208 V AC)

MDM-832 unit 2
(208 V AC)

MDM-832 unit 3
(208 V AC)

Line 1 (120 V AC) Line 2 (120 V AC) Line 3 (120 V AC)
Neutral Ground
Figure 1: 120 V AC, 3-Phase Wye System (Two Lines to Each MDM-832)
TIP: The 120 V AC, 3-phase Wye system with two lines is recommended because it allows modules to draw less current than with single-line systems, thereby reducing voltage drop due to cable resistance.

230 V AC, 3-Phase Wye System (Single Line)
Line-Neutral-Ground
Figure 2 illustrates a basic 230 V AC, 3-phase Wye distribution system with the load distributed across all three phases, with each MDM-832 connected to a single line and common neutral and ground lines. This system delivers 230 V AC to each module.

MDM-832 unit 1
(230 V AC)

MDM-832 MDunMit-8232 ((223300 VV AACC))

MDM-832 MDunMit-8332 ((223300 VV AACC))

Line 1 (230 V AC) Line 2 (230 V AC) Line 3 (230 V AC)
Neutral Ground

Figure 2: 230 V AC, 3-Phase Wye System (One Line to Each MDM-832)

CHAPTER 2: MDM-832 POWER REQUIREMENTS

CAUTION: For 230 V AC, 3-phase Wye sys! tems, never connect two lines along with the neutral line to the AC Input of the MDM-832, as the resulting voltage would be higher than the allowable upper voltage range (240 V AC) and would damage the unit.
MDM-832 VOLTAGE REQUIREMENTS
The MDM-832 operates as intended when receiving AC voltage within the following range:
100240 V AC, 5060 Hz.
If the voltage rises above 267 V, the power supplies of connected loudspeakers could become damaged. The MDM-832 allows any combination of voltage to ground (neutral-line-ground or line-line-ground).
CAUTION: The power source for the MDM-832 ! should always operate within the required voltage range, at least a few volts from the upper and lower ranges. This ensures that AC voltage variations from the service entry -- or peak voltage drops due to cable runs -- will not cause the amplifiers of connected loudspeakers to cycle on and off or cause damage to loudspeaker power supplies.
MDM-832 CURRENT REQUIREMENTS
The current draw for the MDM-832 and its connected loudspeakers is dynamic and fluctuates as loudspeaker operating levels change. Since different cables and circuit breakers heat up at varying rates, it is important to understand the following types of current ratings and how they affect circuit breaker and cable specifications.
Idle Current -- The maximum rms current during idle periods.
Maximum Long-Term Continuous Current -- The maximum rms current during a period of at least 10 seconds. The maximum long-term continuous current is used to calculate temperature increases for cables, to ensure that cable sizes and gauges conform to electrical code standards. The current rating is also used as a rating for slow-reacting thermal breakers, which are recommended for loudspeaker power distribution. In addition, the maximum long-term continuous current can be used to calculate the AC looping capability for the distribution module and loudspeakers.
Burst Current -- The maximum rms current during a period of around 1 second. The burst current is used as a rating for magnetic breakers.

Ultimate Short-Term Peak Current -- A rating for fast-reacting magnetic breakers. It is also used for calculating the peak voltage drop in long AC cable runs according to the following formula:
V pk (drop) = I pk x R (cable total)
For maximum load values for the MDM-832, see Appendix C, "MDM-832 Specifications."
The minimum electrical service amperage required by the MDM-832 is the sum of the maximum long-term continuous current for all connected loudspeakers, up to the rating of the breakers. When calculating the total current draw at the MDM-832 AC Input, an additional 30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service entry.
NOTE: For best performance, the AC cable voltage drop should not exceed 10 percent of the sum of the maximum long-term continuous current for all connected loudspeakers. Make sure that even with AC voltage drops that the AC voltage always remains within the operating window.
POWERING ON THE MDM-832
When powering on the MDM-832 and switching on the breakers, the AC voltage presence LEDs on the front panel light up to indicate the presence of AC voltage at each circuit breaker.
CAUTION: If the AC voltage presence LEDs do ! not light up, or loudspeakers connected to the MDM-832 do not output audio after 10 seconds, switch the breakers to the OFF position and remove AC power immediately, and verify that the voltage is within the required range. If the problem persists, contact Meyer Sound Technical Support.

ELECTRICAL SAFETY GUIDELINES
Make sure to observe the following important electrical and safety guidelines. The Meyer Sound MDM-832 requires a grounded outlet.
Always use a grounded outlet and plug.
Ground
Ground
Do not use a ground-lifting adapter or cut the AC cable ground pin.
The AC power connector must not be engaged or disengaged when under load or live.
The powerCON 32 input connector must not be engaged or disengaged when under load or live.
The powerCON 20 output connectors must not be engaged or disengaged when under load or live.
Do not use a power cable adapter to drive the unit from a standard three-prong Edison outlet since that connector is rated for only 15 A (NEMA 5-15R; 125 V AC max).
Do not use a power connector or outlet rated for less than 32 A.
Keep all liquids away from the unit to avoid hazards from electrical shock.
Do not operate the unit if the power cable is frayed or broken.

MDM-832 OPERATING INSTRUCTIONS

CHAPTER 2: MDM-832 POWER REQUIREMENTS 10

CHAPTER 3: MDM-832 FRONT AND REAR PANELS

MDM-832 FRONT PANEL
The MDM-832 front panel includes audio outputs, RMS FT-10 network connectors, powerCON 20 AC outputs, 15 A breaker switches, and LEDs for monitoring AC voltage presence at each circuit breaker.

Breaker Switches (Channel 14, Channel 58)

MDM-832 Front Panel

Audio Outputs
The MDM-832's eight front-panel audio outputs provide balanced audio to connected loudspeakers, routed from the audio inputs on the rear panel of the MDM-832. Audio outputs are available as either XLR 5-pin male connectors or XLR 3-pin male connectors.
MDM-832 Audio Outputs (5-pin)
XLR 5-pin male connectors (pin 1, ground; pin 2, signal positive; pin 3, signal negative; pins 45, RMS) deliver both balanced audio and RMS signals to connected loudspeakers with a single, composite cable.

MDM-832 Breaker Switches
Two front-panel 15 A breaker switches toggle AC power to the AC Outputs. One breaker switch corresponds to AC Outputs 14; the other breaker switch corresponds to AC Outputs 58.
Each set of four MDM-832 outputs is capable of powering groups of loudspeakers that have a sum total maximum long-term continuous current draw equal to or below the rating of the MDM-832 breakers. Load ratings are indicated adjacent to the breaker switches on the front panel. For more information on load ratings, see Appendix C, "MDM-832 Specifications."
Voltage LEDs (12)
Each Voltage LED indicates AC voltage presence for the corresponding breakers and connected loudspeakers.

MDM-832 Audio Outputs (3-pin)
XLR 3-pin male connectors (pin 1, ground; pin 2, signal positive; pin 3, signal negative) deliver balanced audio to connected loudspeakers.
NOTE: For information on cable requirements for any loudspeaker, refer to its operating instructions. For information on composite cables available from Meyer Sound, see Appendix A, "Composite Cable."

Voltage Presence LEDs

State

Cause

Recommended Action

Unlit

The MDM-832 is not connected to mains power, or breakers are not switched on.

Verify the MDM-832 AC Input is connected to mains power; inspect the power cabling; switch the breakers to the ON position.

Lit

The MDM-832 is con-

None.

nected to mains power

and breakers are switched

on.

CHAPTER 3: MDM-832 FRONT AND REAR PANELS

RMS Loudspeaker Connectors
The front-panel RMS loudspeaker connectors communicate over a twisted-pair cable to connected RMS-equipped loudspeakers. The RMS connection allows muting, soloing, and monitoring of connected loudspeakers from a Mac® or Windows®-based computer.
MDM-832 RMS Loudspeaker Connectors

CAUTION: Before connecting or disconnecting ! the MDM-832's AC outputs, make sure the front-panel breaker switches are in the OFF position. The powerCON 20 output connectors should not be engaged or disengaged while under load or live.
MDM-832 REAR PANEL
The MDM-832 rear panel includes an AC Input connector, eight audio inputs for receiving source audio, seven Link switches for routing audio from inputs to outputs, and two RMS network connectors with terminator switch.

These connectors provide the same RMS network connection that is available when using the optional XLR 5-pin male connectors.

TIP: As an alternative to routing RMS to loudspeakers through the front-panel FT-10 connectors, MDM-832 modules equipped with 5-pin connectors can carry both balanced audio and RMS signals to connected loudspeakers with a single, composite cable.
AC Outputs
The MDM-832 has eight front-panel powerCON 20 twist-lock AC output connectors (line, neutral, ground) that provide AC power to loudspeakers connected to the MDM-832 with powerCON 20 looping power cables.

MDM-832 Rear Panel

AC Input
The MDM-832 receives AC power from its powerCON 32 twist-lock AC Input connector (line, neutral, ground). Located on the rear panel of the unit, this connector is rated at 32 A and provides a locking connection to avoid accidental disconnections.

Side

Front

Rear
L

MDM-832 AC Output Connectors
Located on the front of the unit, these connectors are rated at 20 A and provide a locking connection to avoid accidental disconnections. Use only Meyer Sound self-powered loudspeakers with auto-ranging input voltage selection.

Side

Front

Rear

powerCON 20 AC Looping Output Connector

Ground

powerCON 32 AC Input Connector

Ground N

CAUTION: When assembling a powerCON 32 ! cable for use with the MDM-832 AC Input, the cable gauge must be at least 10 AWG or 6 mm2 to ensure safe transmission of 30 A to the distribution module.

Depending on region, the MDM-832 ships with a power cable terminated with either a NEMA L6-30P or an IEC 60309 connector. The power cable can accept different power connector types for outlets used throughout the world. Make sure to use the correct power connector for the AC power in your area. The MDM-832 operates as intended within an AC voltage range of 100240 V at 5060 Hz.

MDM-832 OPERATING INSTRUCTIONS

CAUTION: Do not use a power cable adapter ! to drive the MDM-832 from a standard three-prong Edison outlet since that connector is rated for only 15 A (NEMA 5-15R; 125 V AC max).

NOTE: Inputs are inactive when the Link switch for the preceding input is enabled. Connections should not be made to inactive inputs.

The MDM-832 requires grounded outlets. To operate safely and effectively, it is extremely important that the entire system be properly grounded. For information about supplying power to the MDM-832, see Chapter 2, "MDM-832 Power Requirements."
Audio Inputs
Up to eight channels of balanced audio are received from the MDM-832's eight rear-panel audio inputs. The inputs are equipped with XLR 3-pin female connectors (pin 1, ground; pin 2, signal positive; pin 3, signal negative). Make sure to use standard balanced XLR cables with each pin connected at both ends.

Link Switch Routing Examples
The following examples illustrate several common routing applications for the Link switches.

Routing One Input to Eight Outputs To route one input to eight channel outputs: Set all Link switches to ON.

Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7

Out 1 Out 2 Out 3 Out 4 Out 5 Out 6 Out 7 Out 8

MDM-832 Audio Inputs
Audio inputs default to being routed to their corresponding audio outputs. Inputs can also be routed to adjacent outputs with the Link switches, though this affects their input impedance (see "Input Impedance for Linked Channel Inputs" on page 14).
Link Switches
Link switches determine how inputs are routed to outputs. When an input's Link switch is OFF (set to the down position), the input is only routed to its corresponding output, for example, Input 1 routed to Output 1.
When a Link switch is ON (set to the up position), the input is routed to its corresponding output and also to the next adjacent output, for example, Input 1 routed to Output 1 and Output 2.
If multiple adjacent Link switches are ON, the input is routed to each adjacent output. For example, when Link switches 1 and 2 are ON, Input 1 is routed to Outputs 13.

In 1

In 2

In 3

In 4

In 5

In 6

In 7

In 8

Link Switches 13

CHAPTER 3: MDM-832 FRONT AND REAR PANELS

Routing Two Inputs to Four Outputs Each To route two inputs to four channel outputs each:
Set the Link 4 switch to OFF and all other Link switches to ON.

Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7

Off

Out 1 Out 2 Out 3 Out 4 Out 5 Out 6 Out 7 Out 8

In 1

In 2

In 3

In 4

In 5

In 6

In 7

In 8

2 channel outputs, 5 kOhms input impedance
4 channel outputs, 2500 ohms input impedance
8 channel outputs, 1250 ohms input impedance
To avoid distortion when linking channel inputs, make sure the source device can drive the total load impedance of the linked loudspeakers. The audio source must be capable of producing +20 dBV (10 V rms, 14 V peak) into 600 ohms to produce the maximum peak SPL over the operating bandwidth of the connected loudspeaker.
NOTE: Most source devices are capable of driving loads no smaller than 10 times their output impedance. To drive eight loudspeakers linked from a single channel input, the source device should have an output impedance of approximately 100 ohms or less.

Routing Eight Inputs to Eight Separate Outputs To route eight inputs to eight separate channel outputs: Set all Link switches to OFF.

Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7

Off

Out 1 Out 2 Out 3 Out 4 Out 5 Out 6 Out 7 Out 8

RMS Network Connectors
The RMS section of the user panel includes two network connectors and a Terminator switch.
Rear-Panel RMS Network Connectors
The rear-panel Weidmuller 2-conductor, locking connectors transfer data to and from the RMS network by providing a connection between the distribution module and RMServer, and can be used to extend the RMS network to additional distribution modules. Included with each MDM-832 are Weidmuller cable connectors and mounting blocks for constructing RMS cables. The RMS blocks allow cables to be securely attached to the RMS module with screws.

In 1

In 2

In 3

In 4

In 5

In 6

In 7

In 8

Input Impedance for Linked Channel Inputs
When a Link switch is enabled, the channel input's unbuffered source signal is transmitted in parallel to each linked channel output. This causes the channel input's impedance (normally 10 kOhms for one loudspeaker) to be reduced for each linked output. For example:
1 channel output, 10 kOhms input impedance

RMS Terminator Switch
The Terminator switch engages an internal resistive, capacitive circuit designed to prevent electrical reflections in the RMS network. If the RMServer is receiving poor data or experiencing other communications problems with the RMS network, switching the Terminator switch to the ON position may help increase network stability.

CHAPTER 4: POWERING LOUDSPEAKERS WITH THE MDM-832

NOTE: For information on cable requirements for your loudspeaker, refer to its operating instructions. For information on cables available from Meyer Sound, see Appendix A, "Composite Cable."
To connect loudspeakers to the MDM-832:
1. Switch both breakers on the MDM-832 front panel to the OFF position.
2. Disconnect the MDM-832 from the AC mains wall receptacle.
3. Connect audio sources (from a mixer or processor) to the MDM-832 Audio Inputs with balanced XLR cables.
4. Use the MDM-832 Link switches to route audio inputs to the desired audio outputs (see "Link Switches" on page 13).
5. Connect the MDM-832 AC Outputs to loudspeaker AC Inputs with powerCON 20 cables.
NOTE: To provide AC power, balanced audio, and RMS to loudspeakers using a single composite cable, see Appendix A, "Composite Cable."
6. Connect the MDM-832 audio outputs to loudspeakers.
If the MDM-832 is outfitted with XLR 3-pin male outputs, use balanced cables. Optionally, use RMS cables to connect the MDM-832 front-panel RMS loudspeaker connectors to loudspeaker RMS modules.
If the MDM-832 is outfitted with XLR 5-pin male outputs, use composite cables wired for both balanced audio and RMS and terminated with the XLR 5-pin connectors.

9. Switch both breakers on the MDM-832 front panel to the ON position. Monitor the front-panel LEDs to verify that voltage is present. For more information, see "Voltage LEDs (12)" on page 11.
10. Check loudspeaker LEDs to verify whether the loudspeakers are powered and ready to reproduce audio.
11. Enable output from the audio sources (from the mixer or processor) connected to the MDM-832.
In addition to connecting each loudspeaker directly to the MDM-832, a loop configuration can be established by using the loop outputs of connected loudspeakers to provide AC power, balanced audio, and RMS to additional loudspeakers. For examples of this type of configuration, see "Cable Configurations" on page 16.
NOTE: Using the MDM-832 linked outputs or loudspeaker loop outputs to drive additional loudspeakers affects their input impedance. For more information, see "Input Impedance for Linked Channel Inputs" on page 14.
CAUTION: The powerCON 32 input connector ! and powerCON 20 output connectors should not be engaged or disengaged while under load or live.

CAUTION: Each set of four MDM-832 outputs ! is capable of powering groups of loudspeakers that have a sum total maximum long-term continuous current draw equal to or below the rating of the corresponding breaker. Load ratings are indicated adjacent to the breaker switches on the front panel. For more information, see Appendix C, "MDM-832 Specifications".

7. Connect the MDM-832 to the AC mains wall receptacle.
8. If an RMS network is available, connect the MDM-832's rear-panel RMS network connectors to the RMServer. For more information, see "RMS Network" on page 17.

CHAPTER 4: POWERING LOUDSPEAKERS WITH THE MDM-832

CABLE CONFIGURATIONS
Cabling from the MDM-832 to loudspeakers can be configured with composite or separate cables, with loop outputs or without.

Separate Cables
Separate cables carry AC power, balanced audio, and RMS directly to loudspeakers.

Composite Cables
Composite cables carry AC power, balanced audio, and RMS directly to loudspeakers through a single cable.

Legend

Composite Cable (Balanced Audio, RMS, Power) MJF-210

Legend

Balanced Audio and RMS Power
MJF-210

MDM-832 Connected to MJF-210 Loudspeakers with Separate Cables
NOTE: MDM-832 modules equipped with XLR 3-pin outputs send balanced audio and RMS through separate cables.

MDM-832 Connected to Loudspeakers with Composite Cables
Composite Cables using Loop Outputs
Composite cables carry AC power, balanced audio, and RMS through a single cable. Channels of the MDM-832 are connected to loudspeakers, which in turn use loop outputs to distributed AC power, balanced audio, and RMS to additional loudspeakers.

Separate Cables using Loop Outputs
Separate cables carry AC power, balanced audio, and RMS. Channels of the MDM-832 are connected to loudspeakers, which in turn use loop outputs to distributed AC power, balanced audio, and RMS to additional loudspeakers.

Legend

Composite Cable (Balanced Audio, RMS, Power) MJF-210

MDM-832 Connected to Loudspeakers with Composite Cables and Loop Outputs

Legend

Balanced Audio and RMS Power
MJF-210

MDM-832 Connected to MJF-210 Loudspeakers with Separate Cables and Loop Outputs

MDM-832 OPERATING INSTRUCTIONS

RMS NETWORK
The RMS remote monitoring system network connections allow the MDM-832 distribution module to be connected to an RMS network. RMS reports, in real time, the status and power usage of multiple Meyer Sound loudspeakers from a Mac or Windows-based computer. The host computer communicates with RMS-equipped loudspeakers and power supplies via RMServerTM, a compact, Ethernet-based hardware unit with two FT-10 ports. RMServer stores system configurations internally, eliminating most manual data entry. Systems can be monitored from a laptop at front-of-house or backstage, or from a tablet computer anywhere within the venue over WiFi.
By connecting the MDM-832 to an RMS network and utilizing the front-panel XLR 5-pin male connectors or the front-panel RMS loudspeaker connectors, connecting loudspeakers equipped with RMS modules to the MDM-832 allows distribution of network information between the loudspeakers and RMServer.

Compass RMS Software
Compass RMSTM software provides extensive system status and performance data for each loudspeaker, including amplifier voltage, limiting activity, power output, fan and driver status, as well as mute and solo capability. Loudspeakers are added to the RMS network and assigned a node name during a one-time discovery procedure. Once loudspeakers are identified on the RMS network, they appear in the Compass RMS software as icons that can be customized.

NOTE: RMS does not control AC power.

NOTE: For the latest RMS system requirements, visit the Meyer Sound website (http://www.meyersound.com).
Connecting to Additional Distribution Modules and RMServer
When using multiple distribution modules, the RMS network can be extended between them (daisy-chained) such that all connected loudspeakers report their operating parameters to the RMS network through the distribution modules.
To extend the RMS network between multiple MDM-832 distribution modules, connect an RMS cable to one of the rear-panel RMS network ports of one module, then connect the other end to one of the RMS network ports of the second module.
To connect the MDM-832 to RMServer, connect an RMS cable to one of the RMS network ports of the MDM-832, then connect the other end to one of the FT-10 ports of RMServer.

Compass RMS Window
Individual loudspeakers can be physically identified with the Wink option in RMS, which lights the Wink LED on the RMS module for that particular loudspeaker. Conversely, a loudspeaker can be identified in Compass RMS by pressing the Service or Identify button on the loudspeaker's RMS module.
Loudspeaker icons can be arranged to represent how loudspeakers have been deployed in the system. Multiple pages can be saved and recalled for specific performances and venues.

NOTE: For more information about RMServer, refer to the RMServer Hardware Guide (PN 05.222.024.01) and the Remote Monitoring System User Guide (PN 05.033.302.18).

CHAPTER 4: POWERING LOUDSPEAKERS WITH THE MDM-832 18

CHAPTER 5: MDM-832 SYSTEM EXAMPLES

NOTE: Separate power and signal connections are shown in all system examples. To simplify cable runs, use composite cable to carry both power and signal to each loudspeaker. See Appendix A, "Composite Cable."

(6) MJF-208 AND (2) MJF-212A (115 V, 208 V, OR 230 V)

1 2 3 45

Legend

Balanced Audio and RMS Power Galileo Callisto Channels Galileo Callisto 616
MJF-212A
MJF-208

CHAPTER 5: MDM-832 SYSTEM EXAMPLES

List of Components
Table 1: (6) MJF-208 and (2) MJF-212A Part Number 09.245.001.01 (UL) or 09.245.001.03 (CE)
27.033.111.01 or compatible third-party composite cable
466.047 466.044 464.027 464.026

Description MDM-832 Distribution Module (5-pin) Composite cable, 30 m Composite cable, 1.5 m powerCON 20 loop output connector (NAC3FCB) powerCON 20 input connector (NAC3FCA) XLR 5-pin male connector (NC5MX-B) XLR 5-pin female connector (NC5FX-B)

Count 1 5 3 8 8 8 8

(12) LEOPARD AND (4) 900-LFC (208 V, OR 230 V)
1
1
2 3 4 4 5 5

MDM-832 OPERATING INSTRUCTIONS
9
9 10 11 12 12 13 13

Legend

Balanced Audio and RMS Power Galileo Callisto Channels Galileo Callisto 616 LEOPARD
900-LFC

1 2 3 4 5 ... 9 10 11 12 13

CHAPTER 5: MDM-832 SYSTEM EXAMPLES

List of Components
Table 2: (12) LEOPARD and (4) 900-LFC Part Number 09.245.001.01 (UL) or 09.245.001.03 (CE)
27.033.111.01 or compatible third-party composite cable
466.047 466.044 464.027 464.026

Description MDM-832 Distribution Module (5-pin) Composite cable, 30 m Composite cable, 1.5 m Composite Cable, 1 m powerCON 20 loop output connector (NAC3FCB) powerCON 20 input connector (NAC3FCA) XLR 5-pin male connector (NC5MX-B) XLR 5-pin female connector (NC5FX-B)

Count 2 10 2 4 4 16 16 16

(8) UPA-1P (115 V, 208 V, 230 V)

MDM-832 OPERATING INSTRUCTIONS

Legend

Balanced Audio RMS Power Galileo Callisto Channels Galileo Callisto 616
UPA-1P

1234

CHAPTER 5: MDM-832 SYSTEM EXAMPLES

List of Components
Table 3: (8) UPA-1P Part Number 09.245.001.02 (UL) or 09.245.001.04 (CE)
27.033.111.01 or compatible third-party composite cable
466.047 466.044 464.046 464.047 484.033

Description MDM-832 Distribution Module (3-pin) Composite cable, 30 m Composite cable, 1.5 m powerCON 20 loop output connector (NAC3FCB) powerCON 20 input connector (NAC3FCA) XLR 3-pin male connector (NC3MX-B) XLR 3-pin female connector (NC3FX-B) RMS connector (Weidmuller)

Count 1 4 4 8 8 8 8 16

APPENDIX A: COMPOSITE CABLE

COMPOSITE CABLE AND CONNECTORS
Composite cable and loudspeaker connectors are available from Meyer Sound. Composite cable can be terminated to carry AC power, balanced audio, and RMS from the MDM-832 distribution module to AC-powered Meyer Sound loudspeakers.
NOTE: Bulk cable is comprised of three 14 AWG wires for AC power, one pair of 24 AWG wires for balanced audio, and one pair of 24 AWG wires for RMS. Third-party cables (Gepco® RunONETM, Pro CoTM Siamese Twins, Sommer Monolith, WhirlwindTM APC series, Klotz composite, or equivalent) can also be used.

Part Number 27.033.111.01
464.026
464.027
464.046
464.047
466.044 466.047 484.033

Description Breakout Cable UL AWN style 2464 500 ft roll (152.4 m) Neutrik® XLR 5-pin female (NC5FX-B)
Neutrik XLR 5-pin male (NC5MX-B)
Neutrik XLR 3-pin male (NC3MX-B)
Neutrik XLR 3-pin female (NC3FX-B)
powerCON 20 input connector (NAC3FCA) powerCON 20 loop output connector (NAC3FCB) Weidmuller RMS connector

Use
AC conductors insulated separately with PVC. Intended for applications where bundled cables fan out to separate locations.
Connects to MDM-832 XLR 5-pin audio outputs or loudspeaker audio loop outputs. Carries balanced audio and RMS.
Connects to loudspeaker XLR 5-pin audio inputs. Carries balanced audio and RMS.
Connects to loudspeaker XLR 3-pin audio inputs. Carries balanced audio.
Connects to MDM-832 XLR 3-pin audio outputs or loudspeaker audio loop outputs. Carries balanced audio.
Connects to loudspeaker AC Inputs.
Connects to MDM-832 AC outputs or loudspeaker AC loop outputs.
Connects to MDM-832 and loudspeaker RMS inputs.

ASSEMBLING COMPOSITE CABLES
When connecting loudspeakers to the MDM-832 with composite cable, you must terminate each end of the cable with the correct connectors to supply AC power, balanced audio, and RMS to the loudspeaker. XLR 5-pin connectors can be used with composite cables to carry RMS and balanced audio through a single connector, provided the MDM-832 and connected loudspeakers are configured with XLR 5-pin connectors. XLR 3-pin connectors can be used with composite cables to carry RMS and balanced audio through separate connectors, provided the MDM-832 and connected loudspeakers are configured with XLR 3-pin connectors.

Assembled Composite Cable with powerCON 20 and XLR 5-pin Connectors.

Assembled Composite Cable with powerCON 20, XLR 3-pin, and Weidmuller RMS Connectors. 25

APPENDIX A: COMPOSITE CABLE
To assemble a composite loudspeaker cable: 1. Cut the bulk cable to the desired length, including fanout length. 2. Strip the outer jacket to the desired fanout length. 3. Remove excess binder. 4. Strip 0.7 inch (18 mm) of the jacket from each of the two signal pairs. 5. Unwind each shield, then twist to form a third conductor. 6. Trim the foil shield and rod fillers of each signal pair so they sit flush with the jacket. 7. Strip each conductor of the two signal pairs by approximately 0.16 inch (4 mm).
0.7"

Signal Pair Exposed Lengths

0.16"

8. Tin exposed conductors and then solder to the XLR connector using the following wiring scheme.

Composite Cable Signal Pinout (XLR)

Type

Outer Jacket Color

Function

Wire Color

XLR 3-pin (Balanced Audio) and Weidmuller (RMS)

Blue (signal pair 1)

Audio Shield Audio Signal (+) Audio Signal (-)

Silver Blue White

Audio Shield

Silver

Blue (signal pair 1)

Audio Signal (+)

Blue

Two pair; XLR 5-pin (Balanced Audio and RMS)

Audio Signal (-)

White

RMS (polarity insensitive) Blue

Black (signal pair 2)

RMS (polarity insensitive) White

Audio Shield

Silver

CAUTION: When wiring cables for the MDM-832 AC outputs, it is extremely important that each pin in the con! nector be wired correctly, to avoid damage to the loudspeaker. In addition, make sure that audio pins are wired correctly; polarity reversals for audio signals affect system performance. RMS connectors are polarity insensitive.

NOTE: For RMS connections in systems with XLR 3-pin audio connections, terminate the second audio pair with Weidmuller RMS connectors according to the RMS Connector Assembly Instructions (PN 28.033.060). For RMS connections in systems with XLR 5-pin audio connections, terminate both signal cable shields to pin 1.

MDM-832 OPERATING INSTRUCTIONS

9. Prepare and assemble the power cable according to the Assembly Instructions provided with your powerCON 20 connectors. Terminal connections use the following wiring scheme.

Black (L)

White (N) Brown (L)

Blue (N)

Green (Ground)
Power Cable Colors

Green/Yellow (Ground)

L N

Ground
powerCON 20 Terminals

Composite Cable AC Wiring Scheme (powerCON 20)

Connector Type

Terminal Function

NAC3FCA (power in) NAC3FCB (power out)

Ground N L

Ground Neutral Line

Wire Color U.S / Canada (60 Hz) Green White Black

Wire Color Europe (50 Hz) Green/Yellow Blue Brown

CAUTION: When wiring AC power cables and distribution systems, it is important to preserve AC line polarity ! and connect the ground on both ends of the cable.

CAUTION: The MDM-832 requires a grounded connection. Always use a grounded outlet and plug. !

APPENDIX A: COMPOSITE CABLE 28

APPENDIX B: ORIENTING THE MDM-832 RACKMOUNT BRACKETS

The MDM-832 ships with its reversible rackmount brackets in a front-facing flush position. The rackmount brackets can be oriented to recess the distribution module from the rack face, position the front panel of the distribution module at the rear of the rack, or position and recess the front panel of the distribution module at the rear of the rack.
To orient the MDM-832 rackmount brackets:
1. Use a #2 Phillips screwdriver to remove the four screws from each rackmount bracket.

To mount the module with the rear panel in a recessed position at the front of the rack, rotate the rackmount brackets to face the rear panel, then adjust so the rear sets of screw holes line up with the screw holes in the chassis.

3. Use a #2 Phillips screwdriver to re-install the screws to secure the rackmount brackets to the enclosure.
2. Do one of the following: To mount the module with the front panel recessed, slide
the rackmount brackets forward until the rear sets of screw holes line up with the screw holes in the chassis.
TIP: Use of Loctite® 243 or equivalent mediumstrength, removable thread-locking adhesive is recommended for secure and non-permanent installation of the rackmount bracket screws.
4. Secure the MDM-832 to the rack rails with four 10-32 truss head screws.
To mount the module with the rear panel at the front of the rack, rotate the rackmount brackets to face the rear panel, then adjust so the front sets of screw holes line up with the screw holes in the chassis.

APPENDIX B: ORIENTING THE MDM-832 RACKMOUNT BRACKETS 30

APPENDIX C: MDM-832 SPECIFICATIONS

MDM-832 Specifications FRONT PANEL Audio Outputs RMS loudspeaker
LEDs AC Outputs
Circuit Breakers REAR PANEL Audio Inputs
RMS Network/Thru
AC Input AC POWER Safety Rated Voltage Range Safety Rated Total Load, Output 14
Safety Rated Total Load, Output 58
Combined Total Load
PHYSICAL Dimensions
Weight Finish ENVIRONMENTAL Operating Temperature Non Operating Temperature Humidity Operating Altitude Non Operating Altitude Shock Vibration

Eight gold-plated XLR 3-pin or XLR 5-pin male connectors Eight RMS FT-10 network connectors, connecting RMS-equipped loudspeakers to the RMS network Two LED indicators for AC voltage presence Eight powerCON 20 connectors Note: Connect only to Meyer Sound self-powered loudspeakers with auto-ranging input voltage selection. Two 15 A breaker switches for enabling AC outputs 14 and 58
Eight gold-plated XLR 3-pin female connectors Link switches to route to outputs Two RMS FT-10 network connectors with terminator, reporting all connected amplifier operating parameters to the RMServer One powerCON 32 connector
100240 V AC, 5060 Hz 12 A (UL/cUL); 15 A (IEC/EN) Note: Must meet or exceed the sum of the maximum long-term continuous current draw of all loudspeakers connected to AC Outputs 14. 12 A (UL/cUL); 15 A (IEC/EN) Note: Must meet or exceed the sum of the maximum long-term continuous current draw of all loudspeakers connected to AC Outputs 58. 24 A (UL/cUL); 30 A (IEC/EN) Note: Indicates the maximum combined safety rated total load for AC Outputs 18.
2-space rackmount 19.00 inches W x 3.50 inches H x 8.50 inches D (483 mm x 89 mm x 216 mm) 12 lbs (5.4 kg) Low-gloss black, very fine textured
0° C to +45° C 40° C to +75° C To 95% at 35° C To 5000 m (16,000 ft) To 12000 m (39,000 ft) 30 g 11 msec half-sine on each of 6 sides 10 Hz 55 Hz (0.010 m peak-to-peak excursion)

APPENDIX C: MDM-832 SPECIFICATIONS
MDM-832 DIMENSIONS
Front view (5-pin output connectors) 17.00
[432 mm]
8.50 [216 mm]
Top view (recessed position) MDM-832 Dimensions

19.00 [483 mm] 3.50 [89 mm] Front view (3-pin output connectors)
Top view (flush position)

MDM-832 OPERATING INSTRUCTIONS

Meyer Sound Laboratories Inc. 2832 San Pablo Avenue Berkeley, CA 94702 +1 510 486.1166 www.meyersound.com

References

4-Heights™ PDF Library 3.4.0.6904 (http://www -tools.com)