Valcom V-9908 User Manual

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V-9908 MESSAGE/PAGE PANEL

Introduction

These instructions contain the specifications and
guidelines necessary to install, operate, and
maintain the V-9908, Message/Page Panel.

The V-9908 Message/Page Panel provides a
handheld push-to-talk microphone for live pages and
storage for eight messages. The V-9908 is
compatible with all Valcom self-amplified speakers.
The microphone, power and internal memory are
monitored, with visual and audible indicators if any
fault conditions are detected. When used with
Valcom Supervised Distributed Amplified One-Way
Paging Speakers and Horns, full system supervision
including the speaker audio path is possible.

Applications

Valcom Supervised Distributed Amplified

One-Way Paging Systems.

Refer to Figure 1 for a block diagram of a typical

installation.

Features

Dynamic noise canceling handheld microphone

for live page

Provides up to 8 minutes of high quality digital

recording
Stores and plays up to 8 messages
Eight (8) preprogrammed messages included
PC Programmable
Message panel fully supervised
Provides speaker line supervision
Provides microphone supervision
Provides DC power supervision
Allows remote message activation
Visual and audible system trouble indication
Audible signal cancel button
Power "ON" indicator
Mounts in most 4 gang deep electrical box

Dimensions

5"W x 4.25"H x 2”D

(12.7cm W x 10.8cm D x 5.08cm H)

4 lbs. (1.5Kg)

Specifications

Power Requirements

Operating Voltage 22 – 26VDC
Current 250mA

Issue 6

Microphone Input

Input Impedance: >5000 Ohms
Input sensitivity: 1kHz 1 millivolt for -12dBm
output (output terminated with 100 Ohms)

Audio

Frequency Response:
Mic – Output: 150Hz – 7,000Hz
Frequency Response:
Stored Messages – Output: 150Hz – 3,500Hz
Input Sensitivity (mic): 1kHz 1 millivolt for -12dBm
output (output terminated with 100 Ohms)
Signal to Noise (Idle mode, Ref -12dBm): >70dB
Signal to Noise (Mic active, Ref -12dBm) >50dB
Distortion (Mic – Output): < 1% THD at -12dBm
Output Impedance: < 25 Ohms
Nominal output level: -12dBm (Ref 600 Ohms)
Maximum output level: 0dBm (before clipping)

System Supervision

Main Audio Channel: 30Hz tone (inaudible)
Microphone: 1kHz tone supervises the preamp,
cable and element
Microphone Switch: DC loop with 4.7K Ohm resistor
Audio Output: DC loop terminated with a 4.7K Ohm
1/4W resistor
Voice Storage Memory: Fixed segment memory
monitoring
Main Power: 9VDC battery provides redundant
supervision power
Battery: Low voltage monitoring

All system faults are indicated by both an audible
and visual alarm. The audible alarm may be
silenced, however, the visual indicator will continue
to illuminate until the fault is removed.

User Controls (Figure 1)

Push-to-Talk Microphone
Pushbuttons to activate pre-recorded messages
Pushbutton to cancel message play

Pushbutton to cancel wire fault alarm

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Indicators (Figure 1)

Power “ON”
Individual message play
Visual system fault
Audible system fault with silence button

Inputs (Figure 2)

Eight remote message activation inputs via

single pole pushbutton switches.
RS-232 provided for message uploads and

downloads.
Handheld microphone for “live” announcements

Outputs (Figure 2)

Audio output
Page/Message active contact
External contact closure activates on system

fault.

System Operation

The Push-to-Talk microphone is used for live pages.
The microphone has priority over message playback
paging. Pressing the Push-to-Talk switch on the
microphone will activate the audio output and
override (and CANCEL) any message playback in
process.

A group of eight (8) front panel buttons with

associated LED’s are used to activate stored

messages. When a message is activated, the LED
will indicate the status. If the message is playing,
the LED will illuminate. Messages are not
chainable. A message must be finished before an
additional message may be activated. If a message
button is pressed while a message is playing the
original message will cancel.

A “MESSAGE CANCEL” button is available to

cancel any message playing.
Using the program tool, all messages can be

programmed for the following play scenarios:
1 play per button activation

2 plays per button activation
3 plays per button activation
Continuous plays per activation (cancelled via
“MESSAGE CANCEL” button)

Programming Voice Messages

Eight (8) preprogrammed messages are provided in
the V-9908. (See Table 1, for script of
preprogrammed messages).

A serial port (RS-232) is provided to upload and
download voice messages. The program tool
provides all editing and message processing (AGC,
response shaping, wave file conversions, etc.).

The final format is standard 8 bit uLaw at 8kHz
compressed format.

Although it is possible to upload and download
during system operation, it is recommended to
perform this function when the system is not in use.
This insures that messages will not be corrupted
during a download or upload. After message write

remove battery and DC power momentarily.

Total voice message storage is 8 minutes and there
are no other restrictions on lengths of individual
messages. It is possible to record tones, signals,
etc. that will operate in the voice band range. For
additional programming information refer to the
Message Control Panel Program Tool Help Menu.

System Fault Monitoring

The main audio channel has an inaudible tone
present whenever a page or message is not active.
This tone will verify the integrity of the audio channel
from the microphone to the audio output. A Valcom
V-1096 Audio Interface (included) is required when
the speaker runs are non-supervised.

Proper operation of the voice memory flash device is
monitored by continuous reading a fixed segment of
the memory. This insures the flash memory integrity
as well as the circuitry that attaches it to the DSP
controller. It will detect defective components and
interconnection faults as well as actual memory
failure.

In the event of a system or power failure, the

“System Fault LED” will illuminate and an audible

alarm will sound. The Audible alarm may be

silenced by pressing the “Cancel Audible” button,

however the “System Fault” LED will remain lit until

the fault has been corrected. A 9 Volt battery
located on the back of the Page Panel provides the
necessary power to operate the fault circuits in the
event of a power failure. The 9 Volt battery is
monitored and a system fault will occur when the
battery voltage drops. A contact closure is available
to signal a remote monitoring panel when a system
fault occurs.

Full System Supervision using Valcom One-Way
Supervised Self-Amplified Speakers and Horns with
the Page Panel includes monitoring of the audio and
power pairs to the speakers for shorts, opens and
grounds. A fault detected on these lines will cause
the “System Fault” LED to illuminate. A Valcom
V-9999 End of Line device (not included) is required
for speaker line termination.

Installation

Refer to the figure on the following pages for wiring
connections. All connections should be made to the
Message Panel and double-checked prior to
connecting DC power.

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