Valcom v-9947a Service Manual

V-9947A

LINE POWERED LOUD RINGER/HORN

INTRODUCTION

The V-9947A, is a Line Powered Loud
Ringer/Horn which provides amplified electronic
tones for signaling in large or noisy areas. This
instruction contains the specifications and
information necessary to install, operate and
maintain the
V-9947A.

SPECIFICATIONS

Design

The V-9947A is a ringer/horn containing circuitry
to generate incoming call indication via a warble
or single tone when activated by 70-120VAC ring
voltage (Ringer Equivalency Number 2.7A).

To plan a system utilizing the V-9947A, refer to
the Ringer Distance Chart to determine
approximate distances covered. The number
given (ft) is the side to side distance for mounting
the speakers. It is also the distance in front of
the speaker that a good quality signal can be
heard.

Application

• PABX station ringer

Issue 10

• Single or warble tone output.

• Activated by 70-120VAC ring voltage.

• Tones continuous for duration of ring cycle.

• Weatherproof.

• Units may be multipled for simultaneous

access.

• Separate power supply not required.

Dimensions/Weight

• 6.5"H x 8.2"W x 10.4"D, plus mounting
bracket.

• (16.51cm H x 20.83cm W x 26.42cm D)

• 3.3 lbs. (1.5 kg)

Features

• Omni-directional mounting bracket.

• Self-contained tone generator, amplifier,

volume control and horn speaker.

Power Requirements

• 20-30Hz, 35mA maximum.

Environment

• Temperature: -20 to +55° C

• Humidity: 0-95% non-precipitating

1 947947

INSTALLATION

Lead Connections

Connect the tip (green) and ring (red) leads of the
ringer to the PBX Analog station port.

• To produce a warble tone, the black and white
leads remain unconnected.

• To produce a single tone, connect the black
and white leads to each other (See Figure 3).

The V-9947A is not intended for direct or indirect
connection to the public telephone network or any
telephone line providing dial tone. 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.

Connecting Speaker to Base

The speaker may be attached to the base 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-9947A should be mounted 12' to 25' high to
obtain optimum results. This ringer may be used
for either interior or exterior signaling applications.

• Mount the base to a wall using the two holes
provided. Knockout holes are provided for
punch out should additional holes be desired.

• A "C" clamp is provided with the ringer to 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 1). It
is suggested that the horn be mounted to the
underside of the "I" beam so as to provide the
maximum of positioning adjustments.

• Connection to an electrical backbox is
accomplished by channeling wire through the
ball of the base 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.
(See Figure 2).

The V-9947A may be rotated or moved up and
down to obtain the desired position by loosening
the position adjustment knob at the bottom of the
unit (See Figures 1 and 2) approximately 1 turn.
Make required adjustment and re-tighten the knob.

TECHNICAL ASSISTANCE

When trouble is reported, verify there are no
broken connections between the telephone and
the ringer. Ascertain volume control is turned
up.

Assistance in troubleshooting is available from
the factory. When calling, you should have a
VOM and a test set available and call from the
job site. Call [phone] and press 1 for
Technical Support or visit our website at

www.Valcom.com.

Valcom equipment is not field repairable.
Valcom, Inc. maintains service facilities in
Roanoke, VA. Should repairs be necessary,
attach a tag to the unit clearly stating company
name, address, phone number, contact person,
and the nature of the problem. Send the unit to:

Valcom, Inc.

Repair and Return Dept.

5614 Hollins Road

Roanoke, VA 24019-5056

Ambient
Noise
Level
(dB)

dB

100

90

80

70

RINGER DISTANCE CHART

10 20 30 40 50 60 70 80 90 100 110 120 ft.

Distance (Spacing) in Feet

2