Valcom v-9945a Service Manual

VSP-V-9945A

Issue 7

V-9945A

SINGLE TONE/INTERRUPTED

WARBLE TONE LOUD HORN

INTRODUCTION

The V -9945A is a horn with built-in tone generator
and amplifier used for loud signaling applications.
These instructions provide identification, connection,
installation, operation and maintenance information
for the V -9945A, Single Tone/Interrupted Warble
Tone Horn Ringer.

SPECIFICATIONS

Purpose

The V -9945A provides amplified electronic tones for
signaling in large or noisy areas or outside.

Applications

• Night ringing

• C. O. audi ble ringing

• Time clocks

• Special purpose signaling

Features

• Self-contained tone generator, amplifier, volume

control and horn speaker

• Single tone or warble tone outputs

• Power supply included

• Activated by dry contact closure

• Single tone will override warble tone

• Warble tone interrupted 1 second on, 5 seconds

off

• Single tone continuous for duration of closure

• Weatherproof

• Units may be multipled for simultaneous access

Capacity

The V -9945A has provisions for two inputs, either or
both of which can be used in an application. If both
inputs are activated simultaneously, the single tone
will override the warble tone.

The V -9945A is a stand alone ringer horn activated by

a relay. If more than one ringer horn is required,
contact Valcom Technical Support at [phone]
for design assistance.

Dimensions/Weight

• 6.50"H x 8.20"W x 10.40"D, plus mounting

(16.51cm H x 20.83cm W x 26.42cm D)

• 4.3 lbs. (1.95 kg)

Power Requirements

-21.5 to -26.0VDC "B" battery, 250mA nominal.

Environment

• Temperature: -20 to +55 degrees C

• Humidity: 0 to 95% non-precipitating

DESIGN

Access Requirements

The V -9945A requires a dry contact closure for
activation of each tone (If both tones will be used,
two closures are required). The closures may be in
the form of night ringing relay contacts, time clock
contacts, a standard normally open switch or
equivalent.

bracket

1 947747

Equipment Requirements

A system using the V -9945A will consist of the
following:

• Access equipment (See Design Section)

• -24VDC power supply (Included with horn)

INSTALLATION

General

These instructions cover only the installation
procedure for the Valcom V -9945A. Please consult
practices for other equipment if any other equipment
is being used.

TELEPHONE SYSTEM

NIGHT RING

CONTACT
CLOSURE

TIME CLOCK

CONTACT
CLOSURE

RED
GREEN
BROWN
WHITE
BLACK

-24VDC

POWER SUPPLY

V-9945A

• A "C" clamp is provided with the ringer to

• Connection to an electrical backbox is

The V -9945A may be rotated or moved up and down
to obtain the desired position by loosening the knob
(See Figures 2 and 3) at the bottom of the unit
approximately 1 turn. Make required adjustment and
re-tighten knob.

Lead Designations

Black Ground (+)

provided. Knockout holes are provided for
punch out should additional holes be
desired.

allow mounting to a beam. Place the bolt
through the hole in the bottom of the base to
secure the "C" clamp to the beam. (See
Figure 2).

accomplished by channeling wire through
the ball of the base (See Figure 3) and
making appropriate connections. The base
has holes punched for a double-gang square
box, but by punching out additional
knockout holes, the base can be mounted to
a single-gang or octagon box.

White -24VDC

FIGURE 1 - TYPICAL INSTALLATION

Precautions

All precautions have been taken at the factory to
insure that the equipment functions properly. To
insure proper operation and to prevent equipment
damage, please observe the following:

• Unplug the power supply before making any

connections to the unit.

• Do not apply power to the uni t until all

connections have been double-checked.

Attaching Speaker to Base

NOTE: For ease of installation, the base can be
attached to the speaker before or after the base is
mounted.

• Loosen position adjustment knob.

• Insert the ball of the base into the socket of

the speaker.

• Tighten the position adjustment knob.

Mounting

The V -9945A should be mounted 12 feet to 25 feet
high in the area requiring signaling. The unit can be

Connections

Connections should be accomplished using twisted
pair telephone wire. The power supply should be
located within 500 feet of the horn.

• Connect negative (-)(-24VDC) lead of the

• For warble tone access, connect contact

• For single tone access, connect contact

Connections for both single tone and warble tones
may be made to the same speaker.

Red Warble tone access
Green Common
Brown Single tone access

power supply to the white lead; connect
positive (+)(Gnd) lead of the power supply to
the black lead.

closure between red and green.

closure between brown and green.

mounted to a wall, a beam or an electrical box.

• Mount the base to a wall using the two holes
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