Valcom V-763-W Manuel utilisateur

TECHNICAL ASSISTANCE

When trouble is reported, verify there are no broken connections to the unit

and consult the Troubleshooting Chart. Assistance in troubleshooting is

available from the factory. When calling, you should have a Volt-Ohm meter

and a lineman’s test set available and be calling from the job site. Call (540)

563-2000 and ask for Technical Support, or visit our website at

http://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 your 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

WARRANTY

Warranty information may be found on our website at

www.valcom.com/warranty.

INSTALLATION INSTRUCTIONS FOR

AMPLIFIED DESK SPEAKER

MODEL NO. V-763

Issue 9 947163

Valcom Page

Control

Page

Out One-Way

Amplified

Speaker

Tip/A

Ring/B

-24VDC

Gnd

Valcom -24VDC

Power Supply

Ground

-24VDC

Tip

Ring

- Black

- Yellow

- Green

- Red

Typical Connections

YELLOW

GREEN

RED

BLACK

VALCOM ONE-WAY AMPLIFIED DESK SPEAKER

Valcom Desk Speaker, V-763, is self-amplified and may be used to provide

paging from any one-way or talkback page control. The volume may be

adjusted with the knob on the front of the housing. The V-763 requires -

24VDC, 50mA (1 Valcom power unit).

Model V-763-BK Black

Model V-763-W White

Model V-763-GY Gray

NOMINAL SPECIFICATIONS

Input Impedance: 600 Ohm nominal

Input level: -10dBm nominal

Current at -24VDC: 45mA

Dimensions: 3.90" H x 5.10" W x 3.20" D

(9.91cm H x 12.95cm W x 8.13cm

Weight: .6 lbs. (.27 kg)

WIRING

Make connections as shown below using standard, twisted telephone cable.

Limit the number of speakers to five (5) per 500 foot run.

NOTE: Do not connect this speaker directly to 25/70/100V amplifier

as damage to both the amplifier and speaker may occur. A V-1095

may be used to allow the use of Valcom self-amplified speakers on

70V speaker lines.

MOUNTING

The V-763 can be used on a desk or wall mounted. The front cover may be

rotated to match positioning. Four rubber feet are included with the V-763 to

prevent movement on a desk surface.

Key hole patterns are located on the inside rear surface of the enclosure for

wall mounting. When wall mounting, remove the front cover, mount and

replace the front cover. Use a 11/32" drill bit to drill the center hole and a

3/16" bit to drill either of the outer holes.

Connector Pin-Out

TROUBLESHOOTING CHART

Problems

Probable Causes and Corrections

No Audio from

Speaker

1. Check that volume control is turned up

(Clockwise).

2. Using a lineman’s test set, check for the proper

audio level on the Tip/A & Ring/B leads, and if

necessary at the source.

Low Volume

from the

Speaker

1. Check that volume control is turned up.

2. Check voltage at the speaker when in use (-18 to -

24 VDC required).

3. Using a lineman’s test set, check for proper audio

level on the Tip/A & Ring/B leads. It is possible

some low level audio will be heard with only one

side of Tip/A and Ring/B connected.

Loud Squeal

(feedback)

1. Lower volume of speaker.

2. Move speaker to location further from phone.

3. Install confidencer on phone in severe problem

area.

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