Valcom v-9963 Service Manual

V-9963

DIGITAL FEEDBACK ELIMINATOR

GENERAL DESIGN

The V-9963 is designed to eliminate acoustic
feedback. When a page is made, the message is
digitized and saved. Upon completion of the live
page, the message is released for broadcast over
system speakers. (While this page is being broadcast,
another page can be recorded). This eliminates the
offensive squeal of feedback commonly produced by
telephones or microphones when making a page.

VSP-9963

Issue 4

SPECIFICATIONS

Features

• Automatic Gain Control (AGC)

• Adjustable VOX Sensitivity

• Two Input Channels:

Switch selectable for primary and priority or dual
channels with equal priority
Both inputs are switch selectable for loop start
(600 Ohms) or VOX activation

• Two Audio Outputs:

Loop Out (600 Ohms) to Page Control Unit
Line level (8 Ohms) to Amplified Speakers

• Background music input (adjustable)

• Three Normally Open Output Relays:

Play, Record, Busy

• Four LED Indicators: Power On, Play, Record,

and Busy

• Dip Switch Programmable

• Message Cancelling

• Easy to install in new or existing systems

• Solid State, DSP storage and playback

• High Fidelity CD Sound Reproduction

Access

• Loop Start Trunk Port

• C. O. Line Position

• Page Port

• Line Level Audio Feed

Dimensions/Weight

• 10.3"H x 7.8"W x 2.2"D

(26.16cm H x 19.81cm W x 5.59cm D)

• 2.6 lbs. (1.18 Kg)

Nominal Specifications

Input Impedance: 600 Ohms
Input Level: -10 dBm
Loop Out Output Impedance: 600 Ohms
Line Level Output Impedance: 8 Ohms
Output Level: -10 dBm (nominal)
VOX Sensitivity: -20 dBm to - 35 dBm
Release time after last sensed audio: 3 seconds
Maximum d u ration of recor ded pag e 60 seconds
Maximum number of stored pages:
2 Primary/Priority Mode
4 Call Stacker Mode
Frequency Response

Page 80 Hz to 7 kHz
Background M usic 50 Hz to 17 kHz

Environment

Temperature: 0 to 40 Degrees C
Humidity: 0 to 85% non-precipitating

FCC Notice

This equipment has been tested and found to comply
with the limits for Class A digital devices, pursuant to
Part 15 of FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when the equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the
instruction manual, may cause harmful interference to
radio communications. Operation of this equipment
in a residential area is likely to cause harmful
interference in which case the user will be required to
correct the interference at his own expense.

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INSTALLATION/CONNECTIONS

Cabling

It is recommended that Category 3 or 5 twisted
telephone wire be used in all Valcom speaker
installations. A screw type connector strip is
provided to allow connection of all wiring to the V-

9963.

Control 2 Input
(for Priority Port or Line 2)

Use External Dry Contact Closure to activate “Begin
Recording” sequence.

BGM Input

External low-level music source (Ex: V-2952).

Mounting

The V-9963 is wall mountable using ½” screws.

Terminal Connection Access

NOTE: Remove the small side panel to access all
controls and terminations. To remove panel, loosen
the two screws holding the panel in place and lift
panel away from the board.

Audio Treatment

NOTE: If the input signal to the V-9963 exceeds
the nominal levels specified, attenuate the signal
with a V-1092. This situation would apply when the
zone output of a Valcom Talkback Page Control is
used as a One-Way Page input to the V-9963.

(Tip1/Ring1)
Primary or Call Stacker Line 1 Input

The primary input is the path normally used to access
the unit for recording and playback of a page.

Access Method Switch Settings

Loop Start Trunk Port SW1 ON SW4-1 OFF
Key System C.O.Line Key SW1 ON SW4-1 OFF
Stand Alone Telephone Set SW1 ON SW4-1 OFF
Page Port w/Contact Closure SW1 OFF SW4-1 OFF
Page Port w/o Cont. Closure SW1 OFF SW4-1 ON
Valcom Page Cntrl. Output SW1 OFF SW4-1 ON
V-9940 (600 ohm Output) SW1 ON SW4-1 OFF
V-9970 Output using C.C. SW1-OFF SW4-1 OFF

Line Out

8 ohm output connects to Self-Amplified Valcom
Speakers, Amplifier Inputs or other audio devices.

Loop Out

600 ohm output connects to T/R input of Valcom
Multi-Zone Page Controllers or other audio devices.

R77 Adjustment Pot

Adjusts Background Music Level output.

Abort

To abort a message during play, use the External
Contact Closure input to manually stop message
broadcasting.

NOTE: To abort a message during “Record

Sequence,” press any number on the dial pad of the

telephone.

Contact Closure Outputs

(PLAY) PLYSW and PLYMK

Normally Open Contact Closure output that is closed
while message plays.

(RECORD) RECSW and RECMK

Normally Open Contact Closure output that is closed
while message records.

(Tip2/Ring2)
Priority or Call Stacker Line 2 Input

Priority access will override primary input activity.

Access Method Switch Settings

Loop Start Trunk Port SW2 ON SW4-2 OFF
Key System C.O.Line Key SW2 ON SW4-2 OFF
Stand Alone Telephone Set SW2 ON SW4-2 OFF
Page Port w/Contact Closure SW2 OFF SW4-2 OFF
Page Port w/o Cont. Closure SW2 OFF SW4-2 ON
Valcom Page Ctrl. Output SW2 OFF SW4-2 ON
V-9940 (600 ohm Output) SW2 ON SW4-2 OFF
V-9970 Output using C.C. SW2 OFF SW4-2 OFF

Control 1 Input
(for Primary Port or Line 1)

Use External Dry Contact Closure to activate “Begin
Recording” sequence. (Also see Note for

switch 4-3).

(BUSY) PRISW and PRIMK

Normally Open Contact Closure output that is closed
when unit cannot accept any more pages.

Setting Program Dip Switches

There are several controls and switches on the board
for programming the options of the V-9963. Refer to
Figure 1 (page 4) for location of switches and
controls.

All Dip Switches (OFF – Left) (ON – Right)
SW1: Primary Port or Line 1 Battery Feed

No battery feed supplied to primary port OFF
Battery feed supplied to primary port ON

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