Valcom v-9964 Service Manual

Issue 3

V-9964

Digital Feedback Eliminator/Message Stacker

General Design

The V-9964 is designed to eliminate acoustic
feedback and act as a message stacker. When
a page is made, the message is digitized and
saved. Upon completion of the live page, the
message is released for broadcast over the
speakers. While a message is being broadcast,
a second message may be recorded.
Additionally, up to four V-9964 units may be
chained together to allow up to eight messages
to be simultaneously processed.

Specifications

Features

• Automatic Gain Control (AGC)

• Adjustable VOX sensitivity

• Compatible with Valcom Multi-Zone Control

Units and Station Adaptors

• Two input channels: Switch selectable
primary and priority, or two channels with
equal priority; both inputs are switch
selectable for Loop Start or VOX operation

• Two audio outputs:
600 Ohms with loop supervision to a page
control unit or 8 Ohms line level output to
amplified speakers

• Background music input

• Total of three normally open relay contacts

for PLAY, RECORD and BUSY modes (one
contact each)

• LED status indicators for POWER,
RECORD, PLAY and BUSY

• Dip switch option programming

• Message abort feature

Access

• Vacant Loop Start Trunk Port
or C. O. Line Port

• Page Port

• Line Level Audio Feed

• An adaptor is required for C. O. Line or

Station access (see V-9970 or V-9940)

Dimensions/Weight

• 11.76" H x 7.10" W x 1.72" D
(29.87cm H x 18.03cm W x .37cmD)

• 2.6 lbs. ( 1.18Kg )

Nominal Specifications

Power requirement: 24VDC 200mA filtered
Input impedance: 600 Ohms
Input level: -10dBm
Loop Output impedance: 600 Ohms
Line Output impedance: 8 Ohms
Output level: -10dBm
VOX sensitivity: -20dBm to -35dBm
Message release time: 3 seconds after
Last sensed audio
Maximum recorded page time: 60

seconds
(30 seconds per page in call stacker Mode)
Frequency response:
Page 80Hz to 7kHz
Background Music 50Hz to 17kHz

Environment

Temperature: 0 to +40°C +32 to +104°F
Humidity: 0 to 80% non-precipitating

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FCC Information

This equipment has been tested and found to
comply with the limits for a Class B digital
device, pursuant to Part 15 of the 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 may cause
harmful interference in which case the user
will be required to correct the interference at
his own expense.

Installation/Connection

Cabling

Category 3 or 5 twisted pair cable is
recommended for all Valcom distributed
amplified paging installations. Screw terminals
are provided for the basic connections. RJ45
jacks are provided for chaining multiple V-9964
units together. Removing the narrow right side
panel of the V-9964 provides access to controls,
connections and option switches. To remove
the panel, loosen the two screws holding the
panel in place and lift the panel.

Mounting

The V-9964 may be wall mounted or rack
mounted in a standard 19 inch equipment rack
using the brackets included.

Connections

See Figure 1 for a connection diagram.

Tip 1, Ring 1

INPUT 1 is the normal Primary or Call Stacker
system input. Connects to a Loop Start Trunk
Port, 600 Ohm Page Port or some Valcom Page
Controls. Do not connect to a C. O. Line.

Control Input 1

Provides contact closure activation when using a
Page Port.

Tip 2, Ring 2

INPUT 2 is the Override page or Call Stacker
line two input. If desired, connect this to a
second Loop Start Trunk Port or Page Port.
Do not connect to a C. O. Line.

Control Input 2

Provides contact closure activation when using a
Page Port.

Background Music Input

Connection for external line level music source
(Example: V-2952, FM Tuner).

: If using multiple V-9964 units in a

NOTE
chained configuration, all speakers must
connect to the output of the last unit in the

chain.

Line Out

Output connections to Valcom amplified
speakers or 70 Volt amplifier Aux input.

Loop Out

Connects to Tip and Ring input on a Valcom
multi-zone page control unit.

Expansion In

RJ45 connection from the previous V-9964 in a
chained configuration.

Expansion Out

RJ45 connection to the next V-9964 in a chained
configuration.

Abort

To abort a message during play, connect an
external relay contact across the two abort
terminals.

NOTE: To abort a message during the record
sequence, press any DTMF button on the dial
pad of the access telephone.

Relay Closure Outputs
(PLAY) PLYSW and PLYMK

Normally open relay contact that closes while a
message is being broadcast

(RECORD) RECSW and RECMK

Normally open relay contact that closes while a
message is being recorded.

(BUSY) BSYSW and BSYMK

Normally open relay contact that closes when
the unit cannot accept any more messages.

.

Switches and Controls

NOTE: (OFF-Left) (ON-Right)

Refer to figure one for locations.

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