Valcom V-9939B Specifications download pdf (Page 1)

Issue 10

1 947939

V-9939B

MICROPHONE ADAPTER

INTRODUCTION

These instructions provide identification,

installation, connection, operation and

maintenance information for the V-9939B

Microphone Adapter.

The V-9939B is a Microphone Adapter designed

to be used with Valcom paging equipment.

SPECIFICATIONS

Purpose

• Provides microphone access to Valcom

one-way amplified speaker assemblies.

Applications

• Allows local paging access to a zone of

one-way paging speakers

• Allows paging access to stand alone

systems

Refer to Figure 1 for a block diagram of a typical

installation.

Features

• 600 Ohms balanced and 50,000 Ohms

inputs

• Works with most microphones with push to

talk switches

• Built in microphone preamplifier

• Mounts at microphone location

• Provides a set of form "C" contacts

• May be connected to a selected zone of a

multi- zone paging system

• Connector terminals for all connections

Capacity

Each V-9939B may be connected to one zone of

a paging system.

Dimensions/Weight

• 8.25" H x 4.50" W x 2.35" D

(20.95cm H x 11.43cm W x 5.97cm D)

0.7lbs. (0.32kg)

Power Requirements

-21.5 to -26VDC filtered "A" Battery, 40mA max.

Environment

Temperature: 0 to 50°C

Humidity: 0 to 85% non-precipitating

Nominal Specifications

Input impedance: 600 Ohms balanced

50,000 Ohms unbalanced

Output impedance: 600 Ohms

Output level: -10dBm nominal

1 2 3 4 5 6

Summary of Contents

Page 1 - MICROPHONE ADAPTER

Issue 101 947939V-9939BMICROPHONE ADAPTERINTRODUCTIONThese instructions provide identification,installation, connection, operation andmaintenance info

Page 2 - INSTALLATION

2SYSTEM DESIGNConfigurationThere are two basic ways the V-9939BMicrophone Adapter may be used:1. It may be used with a V-1094A andValcom one-way ampli

Page 3 - Connecting Arrangements

3STATIONARYBREAKMAKERINGTIPSWITCHGND OUTPOWERPOWERMIC SHIELDLO Z1HI ZLO Z2J3 J2 J1V-9939BVolumeControlPower Connections___ 1. Unplug power supply.___

Page 4

4SWITCHMICROPHONE ADAPTERV-9939BVALCOM CABLESHIELDEDGREENREDSHIELDBLACK (-)WHITE (+)MICROPHONEV-420LO Z1GND OUTLO Z2MIC SHIELDHI ZVP-624B-24GNDA/C++O

Page 5

5FIGURE 4 – OVERRIDE A SINGLE ZONE WITH A V-2001AWIRING INSTRUCTIONS (For Figure 4)Place a check by each step as it is completed:___ 1. IMPORTANT: Co

Page 6 - Circuit Description

6OPERATIONCircuit DescriptionThe V-9939B Microphone Adapter has inputs forboth high impedance and balanced lowimpedance microphones. It also has inpu

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Valcom V-9939B Specifications Page 1

Browse online or download Specifications for Microphone accessories Valcom V-9939B. Valcom V-9939B User Manual

Summary of Contents

Comments to this Manuals

Valcom V-9939B Specifications Page 1

Browse online or download Specifications for Microphone accessories Valcom V-9939B. Valcom V-9939B User Manual

Summary of Contents

Comments to this Manuals

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