947980
1
Issue 2
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 is used with
Valcom Supervised Distributed Amplified One-Way
Paging Speakers and Horns providing full system
supervision.
The V-9908 provides a handheld push-to-talk
microphone for live pages and storage for eight
messages. The unit provides full system supervision
including the microphone and speaker line.
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
•
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
100mA
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.
