wheelock MDV-2 INSTALLATION INSTRUCTIONS

Series MDV-2

Modular Digital VoiceLink

Operation and Installation

Manual

273 Branchport Avenue

Long Branch, NJ 07740

Telephone: [phone]

Fax: [phone]

www.wheelockinc.com

Part Number P83452 Revision C Assembly Number A83451 Revision C

THANK YOU FOR PURCHASING OUR PRODUCTS. USE THIS PRODUCT ACCORDING TO THIS
INSTRUCTION MANUAL. PLEASE KEEP THIS INSTRUCTION MANUAL FOR FUTURE
REFERENCE.

ANY MATERIAL EXTRAPOLATED FROM THIS DOCUMENT OR FROM WHEELOCK MANUALS OR OTHER DOCUMENTS
DESCRIBING THE PRODUCT FOR USE IN PROMOTIONAL OR ADVERTISING CLAIMS, OR FOR ANY OTHER USE,
INCLUDING DESCRIPTION OF THE PRODUCT'S APPLICATION, OPERATION, INSTALLATION AND TESTING IS USED AT
THE SOLE RISK OF THE USER AND WHEELOCK WILL NOT HAVE ANY LIABILITY FOR SUCH USE.

Conventions Used in This Manual

This manual uses the following conventions for cautions and warnings.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It may

WARNING: INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, COULD RESULT IN

Copyright 2005 Wheelock, Inc. All rights reserved.

P83452
MDV-2 Manual
Rev. C February 2005

also be used to alert against unsafe practices.

PROPERTY DAMAGE AND SERIOUS PERSONAL INJURY OR DEATH.

Preface

The Series MDV-2 provides playback capability for pre-recorded messages. The Series MDV-2 does not sense an emergency
condition or hazardous fires, but is only a part of a system that does sense such conditions. The Series MDV-2, when activated by a
control panel, provides a pre-recorded tone and/or voice message to an audio system. When used as part of a protective signaling
system, the Series MDV-2 must be properly connected to a compatible control panel that has been approved by a nationally
recognized testing laboratory ("LISTED") and/or a LISTED compatible audio system with LISTED compatible notification appliances
for proper operation.

PERSONNEL PROPERLY QUALIFIED IN THE APPLICATION AND USE OF LIFE SAFETY EQUIPMENT ("QUALIFIED
PERSONNEL") MUST READ THIS MANUAL CAREFULLY BEFORE PERFORMING ACTIONS TO SPECIFY, APPLY, INSTALL,
MAINTAIN AND OPERATIONALLY TEST SERIES MDV-2 PRODUCTS IN ACCORDANCE WITH THE INSTRUCTIONS IN THIS
MANUAL.

WARNING: IF SAFETY PRECAUTIONS, INSTALLATION AND TESTING INSTRUCTIONS ARE NOT PERFORMED

PROPERLY, THE SERIES MDV-2 MAY NOT OPERATE IN AN EMERGENCY SITUATION WHICH COULD
RESULT IN PROPERTY DAMAGE, SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

• DO NOT assume any installation, operation and testing details not shown in this manual.

• The Series MDV-2 should only be operated with covers properly in place.

• KEEP this manual WITH THE SERIES MDV-2 FOR FUTURE REFERENCE for the life of the system and make it available to

all qualified personnel who operate, test, maintain, or service the Series MDV-2. We strongly recommend that such personnel
read and understand the entire manual.

The Series MDV-2
power is cut off for any reason, the Series MDV-2 will not provide the desired tone and/or voice warning.
recommended for protective signaling systems.

WHEELOCK EXPRESSLY DISCLAIMS ALL LIABILITY FOR THE CONTENT, CLARITY AND LANGUAGES OF, AND OUTPUT
CHANNEL AND PRIORITY LEVEL ASSIGNED TO, ANY AND ALL MESSAGES. IT IS ESSENTIAL THAT YOU HAVE MESSAGE
CONTENT AND LANGUAGE, SEQUENCE, OUTPUT CHANNEL AND PRIORITY ASSIGNMENTS REVIEWED AND APPROVED
BY QUALIFIED LEGAL AND SAFETY ADVISORS, QUALIFIED REPRESENTATIVE(S) OF OWNER(S) AND USER(S), AND
AUTHORITIES HAVING JURISDICTION.

CAUTION: The Series MDV-2 printed circuit boards are sensitive to static electricity and have delicate components

COMPLY WITH ALL OF THE LATEST APPLICABLE CODES, REGULATIONS, LAWS, STANDARDS, GUIDELINES.

For emergency, hazardous, security, life safety and fire protective signaling system applications, the Series MDV-2 must be used
within their published specifications and only with a LISTED compatible control panel and LISTED compatible audio system in
accordance with sound engineering judgment and the instructions of the manufacturer and in accordance with local, state and
federal codes, regulations and laws. The Series MDV-2 must be PROPERLY specified, applied, installed, operated, maintained and
operationally tested in accordance with these instructions at the time of installation and at least twice a year or more often as
required by local, state and federal codes, regulations and laws. Installation, testing and maintenance must be performed by
qualified personnel for proper operation in accordance with all of the latest National Fire Protection Association (NFPA),
Underwriters' Laboratories (UL), National Electrical Code (NEC), Occupational Safety and Health Administration (OSHA), local,
state, county, province, district, federal and other applicable building and fire standards, guidelines, regulations, laws and codes
including, but not limited to, all appendices and amendments and the requirements of the local authority having jurisdiction (AHJ).

WILL NOT WORK WITHOUT POWER. The Series MDV-2 is powered by the protective signaling system. If

Backup power supplies are

mounted on them. Before handling either a board or any component on a board, discharge any static electricity
from your body by touching a grounded object such as a metal screw which is connected to earth ground.
Handle the board by its edges, and be careful not to twist or flex it. The Series MDV-2 is to be installed in a
static free area and the user is to properly attach grounded wrist straps before touching any static sensitive
areas. After handling Series MDV-2 printed circuit boards, the Series MDV-2 should be tested in accordance
with the “System Checkout” section to verify that the printed circuit boards are undamaged and functioning
properly.

WARNING: IF THE PROTECTIVE SIGNALING SYSTEM SOUNDS AND/OR FLASHES, IT IS A WARNING OF A

MDV-2 Manual Sheet 3 of 33
Rev. C February 2005

POSSIBLY SERIOUS SITUATION AND REQUIRES YOUR IMMEDIATE ATTENTION.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC

Rules. These limits are designed to provide reasonable protection against harmful interference when this equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his/her
own expense.

For the Series MDV-2 to properly operate, it must be properly connected to a listed compatible and properly operating control panel
and audio system, or to a listed compatible and properly operating audio system, that controls its activation and provides proper
voltage and current. The operation and electrical ratings of such control panel and audio system, or such audio system, must be
compatible with the Series MDV-2, and all equipment must be properly interconnected and operating. The installer must check
compatibility before installation; otherwise, the Series MDV-2 and/or the control panel and/or the audio system may be damaged
and/or fail to operate in an emergency situation.

Each manufacturer's fire alarm control panel, audio system, and notification appliance operates differently and has different features.
Before specifying, installing, operating, testing, maintaining or servicing a system, carefully read the installation, operation and
testing manual for each piece of equipment and applicable codes.

Request that the local authority having jurisdiction inspect the proposed placement of the notification appliances and receive their
approval.

The output of the audio system may not be heard in all cases. Sound can be blocked or reduced by walls, doors, carpeting, wall
covering, furniture, insulation, bed coverings, and other obstacles that may temporarily or permanently impede the output of the
audio system. Sound is also reduced by distance and masked by background noise. The output of the audio system may not be
sufficient to alert all occupants, especially those who are asleep, those who are hearing-impaired, those who are wearing devices
that plug or cover the ears, and those who have recently used drugs or alcohol. The output of the audio system may not be heard
by an alert person if the output device is placed in an area which is isolated by a closed door, or is located on a different floor from
the person in a hazardous situation or is placed too far away to be heard over ambient noise such as, but not limited to, running
water, traffic, air conditioners, machinery or musical appliances.

WARNING: AUDIBLE SIGNALS MAY MASK MEDICAL EQUIPMENT MONITORING ALARMS. WHERE MEDICAL

If audible tones and/or voice messages cannot be readily heard and understood clearly within the protected areas as intended, it is
necessary to increase the number and/or sound output intensity of speakers within those areas so that they are heard and
understood clearly when activated.

EQUIPMENT MONITORING ALARMS ARE IN USE, DO NOT USE AUDIBLE SIGNALS; PROVIDE VISUAL
NOTIFICATION APPLIANCES IN HIGHLY VISIBLE LOCATIONS.

MDV-2 Manual Sheet 4 of 33
Rev. C February 2005

Notification equipment cannot last forever. Even though the Series MDV-2 is expected to last up to ten years, any of its parts or
components could fail before then. Therefore testing of the entire protective signaling system, including the Series MDV-2, all
notification equipment, as well as all messages and their output channel, and priority assignment, must be conducted at least twice
each year, or more often as required by local, state and federal codes, regulations and laws, by qualified personnel. If the
notification equipment is not working properly, immediately contact the installer and have all/any problems corrected immediately.
Malfunctioning components should be replaced immediately. Do not attempt to repair malfunctioning components. Malfunctioning
components should be returned for factory repair or replacement. In the event you cannot contact the installer, contact the
manufacturer.

WARNING: THERE ARE CERTAIN HARDWARE FUNCTIONS ON THE SERIES MDV-2 WHICH ARE NOT SUPERVISED.

THE FOLLOWING HARDWARE FAILURES WOULD PREVENT THE SERIES MDV-2 FROM PROVIDING

1. THE "SHORT CIRCUIT" DETECTION CIRCUITRY FOR ANY ONE OR ALL OF THE EIGHT CONTACT

2. THE SERIAL PORT RECEIVER.

3. THE

THE FOLLOWING HARDWARE FAILURES WOULD PREVENT THE SERIES MDV-2 FROM INDICATING A

1. THE AUDIO SUPERVISION CIRCUITRY FOR EACH OF THE TWO OUTPUT CHANNELS.

2. THE STATUS CONTACT.

THESE HARDWARE FUNCTIONS MUST BE PERIODICALLY CHECKED FOR PROPER OPERATION.

Additional copies of this manual may be obtained from the manufacturer.

IF ANY SUCH HARDWARE FUNCTIONS FAIL, THE SERIES MDV-2 MAY NOT PROVIDE THE INTENDED
WARNING AND/OR NOT INDICATE A TROUBLE CONDITION.

THE INTENDED WARNING:

INPUTS.

PLAY CONTACT FOR EACH OF THE FOUR OUTPUT CHANNELS.

TROUBLE CONDITION.

REFER TO PERIODIC TESTING SECTION FOR RECOMMENDED TESTING PROCEDURES.

MDV-2 Manual Sheet 5 of 33
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CONTENTS

Page

Introduction............................................................................................................………………..................... 8

Operation............................................................................................................................………………........ 10

Message Memory.................................................................................................................……………….. 10

Input and Output Options...................................................................................................……………........ 11

Message Files..................................................................................................................………………...... 11

Output Channels.................................................................................................................………………... 13

File Priority............................................................................................................................………………. 13

Acknowledge Playing Files....................................................................................................…………….... 13

Reset Playing Files................................................................................................................……………... 13

Playing Files........................................................................................................................……………….. 14

System Pause.......................................................................................................................………………. 14

Supervision..........................................................................................................................……………….. 14

Standby Battery Calculations..................................................................................................……………... 15

Installation...............................................................................................................................………………... 16

Wiring Guidelines................................................................................................................………………... 17

Mounting............................................................................................................................……………….... 17

Grounding............................................................................................................................………………... 19

Field Wiring..........................................................................................................................……………….. 19

Field Wiring Checkout............................................................................................................……………… 23

System Checkout.................................................................................................................……………….. 24

Ground Fault Detection Sensitivity Adjustment..........................................................................…………… 24

Troubleshooting......................................................................................................................……………….... 25

Procedures A, B, C...............................................................................................................……………….. 26

Procedures D, E (not used), F..................................................................................................……………. 27

Procedures G, H..............................................................................................................………………...... 28

Periodic Testing....................................................................................................................………………...... 29

Technical Specifications........................................................................................................………………...... 30

Glossary............................................................................................................................……………….......... 32

Limited Warranty.............................................................................................................………………............ 33

Limitation of Liability...............................................................................................................……………….... 33

Appendix A. Standard Protocol Description (RS-232).................................................................……………... A-1

MDV-2 Manual Sheet 6 of 33
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List of Figures

Figure 1 Basic Capabilities Of The Series MDV-2 Products............................................………….......... 9

Figure 2 Top View of Message Memory EPROM..............................................................…………....... 10

Figure 3 Series MDV-2 Mounting......................................................................................…………..….. 18

Figure 4 Dry Contact Input Wiring...............................................................................…………….......... 20

Figure 5 Audio Output/Music Input/Channel Playing Wiring.................................................…………..... 21

Figure 6 Input Voltage and Status Contact Wiring...............................................................…………..... 21

Figure 7 Series MDV-2 Board Layout................................................................................……………... 22

Figure 8 RS-232 Port Pin Connection..............................................................................……………..... 23

MDV-2 Manual Sheet 7 of 33
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Introduction

Wheelock's Modular Digital VoiceLink (MDV-2) provides unique storage, and playback capabilities of digitally stored messages and
tones for the creation of versatile and automatic announcement systems. Figure 1 illustrates the basic capabilities of the Series
MDV-2.

The Series MDV-2 plays pre-recorded voice, tones, or other sounds through amplification equipment (not supplied with the Series
MDV-2) when instructed to do so by a contact closure or an instruction over a serial link from other equipment. Custom recording
and programming is available from Wheelock.

This manual describes the Series MDV-2 which features:

• Up to 2 minutes of audio storage in non-volatile, UV-erasable EPROM (see "EPROM" definition in glossary) memory.

• Selective activation of up to 8 message files using contact closures or open collector transistor switching.

• Selective activation of up to 999 message files through the optional serial port.

• Field Upgradable.

• Up to 5 levels of message file priority assignments, with the two lowest priority levels being acknowledgeable.

• Up to 2 audio output channels.

• Supervision of internal operations with trouble diagnosis and notification.

• Serial communication supervision and optional verification of serial commands with a trouble indication if an error is

detected.

• An optional ground fault detection feature.

A PREPROGRAMMED SERIES MDV-2 MUST BE PROPERLY INSTALLED AND CONNECTED TO A COMPATIBLE CONTROL
PANEL, AUDIO SYSTEM AND A POWER SUPPLY TO FUNCTION IN A VOICE ANNOUNCEMENT SYSTEM. THE SERIES
MDV-2 OPERATES ONLY WITH REGULATED AND FILTERED DC VOLTAGE, NOT FULL-WAVE-RECTIFIED VOLTAGE.

The control panel can range from simple push-buttons or detectors that provide contact closures to activate Series MDV-2 files to
sophisticated, computer-based control panels that address Series MDV-2 files through an optional serial port. Similarly, the audio
system can range from an amplified speaker to a large, multi-channel audio distribution system that can also be integrated with a
zoned telephone paging system. Wheelock offers a wide line of audio equipment to configure such systems.

Wheelock models; DV-100, DV-200, MDV-2, DX-100, DX-200, MDX-2 and DV-EM are UL 864 approved for use with Fire Alarm
Control Panels (FACP). The above models are used as accessory control units in UL 864 listed protective signaling systems. All
models have an operating voltage range of 11.0-29.0VDC. All are operated by a serial port or contact closure with an adjustable
output from 0.5-2.0VRMS.

MDV-2 Manual Sheet 8 of 33
Rev. C February 2005

Figure 1.

Basic Capabilities Of The Series MDV-2

MDV-2 Manual Sheet 9 of 33
Rev. C February 2005

Operation

This chapter describes the operating characteristics of the Series MDV-2. Included is information about the following Series MDV-2
features:

• Message Memory

• Input and Output Options

• Message Files

• Output Channels

• File Priority

• Acknowledge Playing Files

• Reset Playing Files

• Playing Files

• System Pause

• Supervision

• Standby Battery Calculations

Message Memory

The Series MDV-2 is a playback-only unit and has
Wheelock or a trained technician.

The Series MDV-2 has the ability to store up to two minutes of audio. The audio is stored digitally on up to two memory integrated
circuit ("I.C.") chips. Each memory I.C. can store up to one minute of audio messages. See Figure 7 for the socket locations S14
and S12 on the Series MDV-2 printed circuit board into which the two memory I.C.'s, U14 and U12 are inserted.

The memory I.C.'s, U14 and U12, are commonly referred to as erasable programmable read only memories ("EPROM's", see
EPROM definition in glossary.) The number of memory I.C.'s in the Series MDV-2 will vary between one or two, depending on the
number and length of audio messages recorded.

EPROM's are erased by exposure to ultraviolet ("UV") light. UV light is present in light sources such as sunlight and fluorescent
lamps. An EPROM must be protected against accidental or premature erasure by covering its window (see Figure 2) with a UV
opaque label.

Each EPROM supplied with this module has its window covered with a UV opaque label. An EPROM's label is to be removed only

erasing the EPROM. After an EPROM has been erased, its window must be recovered with a new UV opaque label.

when

WARNING: EACH EPROM MUST HAVE A UV OPAQUE LABEL PLACED IN PROPER POSITION AS SHOWN IN

FIGURE 2. IF THE LABEL IS WORN, TORN, OR OTHERWISE DAMAGED IN ANY WAY THAT WOULD
ALLOW UV LIGHT TO PASS THROUGH, STORED MESSAGES CAN BE ERASED. IF STORED
MESSAGES ARE ERASED, THEY WILL NOT BE DELIVERED WHEN AND WHERE REQUIRED, AND
COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

no recording capability. The Series MDV-2 must be pre-programmed by

Figure 2.

Top View Of Message Memory EPROM

MDV-2 Manual Sheet 10 of 33
Rev. C February 2005