138 en | Plena Voice Alarm System
9922 141 1037x (V2.16) | V0.6 | 2011.09 Installation and Operation manual Bosch Security Systems B.V.
12 Emergency microphone(s) (option with requirements)
Clause / Requirement Compliance Signature
12.1 General
Plena Voice Alarm System is compliant.
The VACIE may have provision for emergency
microphone(s). In this case the emergency
microphone(s) shall have
Plena Voice Alarm System offers two
types of emergency microphones with
microphone supervision:
– the emergency microphone on the
controller;
– the emergency microphone on the
remote control panels.
a priority over all inputs, including pre-
recorded messages,
The priority can be configured of a call
station. The call stations cannot start an
emergency message.
The trigger inputs can have emergency
priorities, but will always be lower than
the emergency microphones.
The emergency microphone can have
different priority levels.
b an emergency microphone control to
open the microphone channel,
All emergency microphones have a push
to talk (PTT) button built in.
c an indication of any short circuit or
interruption in the voice alarm
transmission path to the microphone,
The microphone of a emergency
microphones (capsule and wiring) can be
configured to be supervised.
d where a pre-announcement attention
drawing signal is provided, an indicator
adjacent to the microphone shall show
when the signal has finished and live
speech can commence, and
The voice alarm system has a built in
monitor speaker and LED indications of a
running emergency call. Pressing the
emergency microphone will always
override the automated message.
e when the emergency microphone control
is operated, any audible indication that
might interfere with the use of the
microphone shall be automatically
muted.
The monitor speaker is muted during the
live speech phase. All sounders are
acknowledged by the use of the
emergency microphone. Microphone and
sounder are always at the same location,
front panels of controller and remote
control panels.
Other sources of interference should be
minimized by proper installation, e.g.
keep HVAC equipment and loudspeakers
at a distance from the microphone.
It is not possible to avoid interference
from closely mounted loudspeakers
receiving the call.
12.2 Microphone priority (option with
requirements)
Plena Voice Alarm System is compliant.
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