Valcom v-9937 Service Manual

Issue 10

V-9937

ONE ZONE PAGE PORT ADAPTER

INTRODUCTION

These instructions provide identification, installation, connection, operation and maintenance information for the V-9937 One Zone Page Port Adapter.

SPECIFICATIONS

Purpose

• Provides loudspeaker paging access for one zone of paging

• Offers override and background music capabilities, as well as automatic gain control and pop suppression

• Connects to page ports of most electronic key and PABX Telephone Systems

Applications

• Electronic Key System C. O. Line Ports

• Electronic Key System Page Ports

• PABX Page Ports

• PABX Loop Start Trunk Ports

Refer to Figure 1 for a simplified block diagram of a typical installation.

Features

• One zone

• Automatic gain control

• Pop suppression

• Override capability (using C. O. line position

or PABX loop trunk port)

• Low level input for background music (typically -17dBm)

• Automatic background music cutoff (when the page port has control leads)

• Electronic Key System page port access

• PABX page port access

• Built-in connection block

• Directly drives Valcom amplified speaker

assemblies

• Page plus music output (music stops during page)

• Page only output

• C. O. audible ring and tone signaling option

(requires V-9942 Tone Module)

Dimensions/Weight

Dimensions: 8.20"H x 4.55"W x 2.30"D (20.85cm H x 11.56cm W x 5.84cm D) Weight: 1.5 lbs. (0.68 kg)

Capacity

• The V-9937 is a one zone, single talkpath unit

• Access requires a page port

• Override requires a C. O. line position or a

PABX loop trunk port

• Music input provided

Power Requirements

-21.5 to -26.0VDC "B" Battery, 200mA maximum

Environment

Temperature: 0 to +50°C Humidity: 0 to 85% (non-precipitating)

1 947937

Electronic Key System

C. O. Line Port

Page Port

Contact Closure

Music Source

FIGURE 1 - SIMPLIFIED BLOCK DIAGRAM OF A TYPICAL INSTALLATION

(Arrangement 1)

SYSTEM DESIGN

Telephone System Requirements

The V-9937 is designed to work with telephone system page ports, which provide an audio pair (8 to 600 Ohms) and a dry contact closure for control. This will be referred to as Arrangement

1. The V-9937 may also be used with page ports (8 to 600 Ohms) that do not have control leads, with two feature limitations:

) If background music is desired, the telephone

system must be capable of providing the switching instead of the V-9937;

The AGC and pop suppression circuitry will not

be enabled on a standard page (they will still work on page override). This will be referred to as Arrangement 2.

NOTE: Refer to the Installation section for Arrangement 1 and 2 connecting information.

Equipment

A complete one zone one-way page system using the V-9937 will be made up of the following:

•

Telephone system page card (if page ports are not standard)

• V-9937 page port adapter

• Valcom one-way amplified speaker

assemblies (or existing high power amplifier and speakers)

• -24VDC power supply

Optional (depending on individual job requirements):

• Music source

• V-9942 Tone Module

V-9937

Input 1

Input 2

Control

Input 3

Power Supply

Output 1

Pwr

One-W ay Amplified Speaker Assemblies

Output 2

Pwr

Page + Music

Page Only

INSTALLATION

Instructions

The following sections contain step by step instructions for wiring the V-9937. Each instruction is preceded by a line. Place a check on the appropriate line as the instruction is completed. The instructions also include tests along the way to verify connections have been made correctly. If these steps are followed exactly, installation of your Valcom system will go smoothly and quickly. If the results of a test do not correspond with what is shown, do not proceed

until the problem has been corrected.

NOTE: The telephone system referred to in this manual is the customer premise equipment such as an electronic key system, a PABX or a dedicated single line telephone (s). The V-9937 is not intended for direct or indirect connection to the public telephone network or to PABX analog station ports. When used with a customer premise telephone system such as a key system or PABX system, these units are interfaced to the system via a fully protected page port or system central office port, which is a fully protected interface device. Also, the host system must be configured to disallow central office trunk conferencing in order to prevent indirect connection to the public network.

Mounting

Remove the metal mounting plate from the rear of the V-9937 enclosure. Using two #6 ¾ inch wood screws, mount the plate in a vacant space on the backboard with the telephone system common equipment. Both mounting holes must be utilized to insure secure mounting of the unit. Provisions for mounting to a single or double gang junction box are provided. See Figure 2

Open the V-9937 enclosure to allow access to connections and option switches. Slide the rear of the unit (contains the board) onto the mounting plate. Lock enclosure to mounting plate with screw provided. Make connections. Replace cover and lock in place with #6 ½ inch screws provided.

TO REMOVE COVER LOOSEN SCREW, THEN ACTIVATE LATCH

PLASTIC COVER

WIREWAY OPENING TO WALL PLATE AND JUNCTION BOX

CIRCUIT BOARD HOUSING ASSEMBLY

SNAP LATCH

WIRE TIE LOOP WIRE TIE USED TO BUNDLE WIRES ENTERING AND LEAVING TERMINAL AREA

METAL WALL MOUNTING

PLATE

.155 DIA. HOLES FOR MOUNTING TO SINGLE OR DOUBLE GANG JUNCTION BOX HOLE PATTERN MATCHES BOTH EURO AND US JUNCTION BOXES

1.5 x 2 WIRE ACCESS OPENING TO JUNCTION BOX

BRACKET LOCKING

SCREW

FIGURE 2

MOUNTING

EXPLODED VIEW

SNAP LATCH FOR COVER

+ 5 hidden pages