Vigilant MICROVAC, Owner'S Manual

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Vigilant MICROVAC Owner's Manual Document: LT0109
System Description and Specification
Page 1-4 5 April 2000 Issue 1.31
1.2.1 OPERATOR FUNCTIONS
MICROVAC contains the following operator functions -
AUTOMATIC - MANUAL - ISOLATE keyswitch.
This keyswitch defines MICROVAC's operating mode - AUTOMATIC for
normal use, MANUAL for manual control of an evacuation (or manual
announcements after a false alarm), and ISOLATE for test and training use.
PA Pushbutton.
In conjunction with the PTT button on the microphone, this pushbutton selects
the PA (Speech) signal while in the Manual mode.
EVACUATE Pushbutton.
This pushbutton selects the EVACUATE signal while in the Manual mode.
ALERT Pushbutton.
This pushbutton selects the ALERT signal while in the Manual mode.
LAMP TEST Pushbutton.
This pushbutton can be used to test the indicators and beeper.
1.2.2 EMERGENCY WARNING AND AUXILIARY FUNCTIONS
1.2.2.1 Audio Functions
MICROVAC generates the standard ALERT and EVACUATE tones and a stored digital
voice message. It contains a 25W RMS power amplifier and 100V line transformer to
distribute the signals to external loudspeakers within the zone. Models are also available
with 100W or 200W booster amplifiers fitted.
1.2.2.2 Control Inputs
MICROVAC monitors two control input lines for emergency functions, FIP and BGA, and two
for non-emergency functions, PAGING and BACKGROUND MUSIC.
1.2.2.3 Visual Alarm Functions
MICROVAC provides facilities for controlling a pair of visual alarm lights (strobes) via two
wires ( one pair) to the Strobe Termination module STBT9008. This output is current limited
to 0.9 amps.
1.2.3 POWER SUPPLY
The wall mounting MICROVAC contains its own power supply with a temperature-
compensated battery charger for charging its 24V batteries. The batteries are protected by a
5 amp slow blow fuse mounted on the Main PCB.
Monitoring of the battery voltage is carried out to detect charger voltage out of specification,
battery low, and battery fail fault conditions.
100W and 200W versions are fitted with a PSU2406 6 amp supply for charging the batteries.