FBT 37483_VAIE2550_manual1.pdf - Manuale (Pagina 80)

6-3
OPERATING CONDITIONS AND TERMINOLOGY
UK
6.2 EQUIPMENT AND FUNCTIONAL SPECIFICATIONS
6.2.1 Front panel
F1. Emergency button with LED (red) Flush-mounted push-button for activating the Manual Emergency mode. It enables access to
the system, with top priority, from the “Quiescent condition” or during an Automatic Emergency, previously activated from an external
peripheral unit. The LED, which is normally off, will be illuminated in the Manual Emergency mode activated by the associated unit.
When the LED flashes, this indicates a Manual Emergency activated by an emergency unit. The Emergency button will also be used
for exiting the Manual Emergency. The push-button is controlled by the internal diagnostics system.
F2. Emergency microphone Hand-held microphone with Push-to-Talk (P.T.T.) key, for live emergency announcements. The microphone
is only operational in Manual Emergency conditions and has priority over pre-recorded emergency messages. The microphone
capsule is controlled by the internal diagnostic system. Use only the microphone included in the supply, connected directly, without
any extension cable, to the XLR socket on the front panel of the VAIE 2250.
F3. Graphic DISPLAY Backlit black-and-white graphic display, 128x64 pixels, for displaying the many management windows, the contents
of which will vary depending on the operating conditions of the system (quiescent or emergency). Together with the +/- knob and with
the multi-purpose keys, it is useful for navigating through the menus, for adjusting working parameters and for managing advanced
functions. It will also display all the information required concerning Fault, Disablement and Voice Alarm Conditions, that are not all
signalled by the status LED’s.
6.2.2 Control panel
C1. Monitoring/beep loudspeaker Built-in loudspeaker that, in quiescent conditions, can be used as a preliminary monitoring loudspeaker,
since it can select the sources reaching the routing section or the voice and music channels sent to the amplifiers. The volume can be
adjusted within a range from -10db to +10dB in respect of the volume set for the selected input. Regardless of the manual setting of
the monitor, the VAIE 2250 system will use the loudspeaker, with top priority, for acoustic signalling (beep) of any failures detected. It
will be muted when the failure conditions cease to exist. In addition, in order to avoid the Larsen effect, it will be muted by the system
during use of the Emergency Microphone. The output volume of the signalling tone will be at its highest level for failures detected
while the system is operating, while it will be at the level set previously for the monitor in the event of a System Fault (CPU Fault).
C2. RESET button Key for resetting the pre-recorded emergency messages manually, operational during Manual Emergencies. Key
for resetting the buzzer and for cancelling signalling of the failure, operational when there is a failure present or after a failure has
been cleared. In the idle condition, this key is not operational.