VIGIL BVR20 - MICRODRIVE
The BVR20 (
Microdrive
) is the heart of the Voice Alarm system that accepts all of the audio inputs
and provides the outputs for the whole voice alarm system. Up to 20 audio inputs can be routed
through to up to 20 outputs (zones) in any configuration. The inputs range from any microphone or
line level source to the emergency messages and background music.
The system is modular, and depending on the system requirements different modules are plugged into
the rear of the BVR20.
BVR20 Modules & Brief description of Functions and Features
Module
Function
BVRCPU
CPU and PSU card: one per BVR20
BVRI4
Quad line input (each with attenuator, compressor, limiter, 5 band equ & chime control)
BVR802
Quad Digital message card, accepts up to 4 OPT402 modules
BVRO2
Dual line output card (each with 6 band equ and option socket for further EQ module)
BVRIO40
40 parallel inputs for zonal access, monitoring, fault i/p & o/p, changeover etc
BVRACO
Control interface for faulty amplifier changeover
BVRNCO
Control interface for when automatic changeover is not required
BVRCI
Control interface for universal zonal access switching, with Ambient noise option
BVRAIO
Control interface for Fire Alarm Panel
BVRL20
20 way 3 metre ribbon cable for connecting cards and interface modules
BVRL26
26 way 3 metre ribbon cable for connecting cards and interface modules
The BVR20 provides all of the monitoring functions and displays the system status using a 40 x 2
character LCD display and 5 front panel mounted LEDs.
The unit can be operated in two separate modes depending on the position of the front panel key-
switch.
Under ‘Normal’ operating conditions (i.e. the key is not turned) all advanced functions of the BVR20
are barred to prevent unauthorised changes to the system. The only options available are monitoring
input and output signals through the internal loudspeaker, and viewing the system status pages which
can be scrolled up or down to display the status of the monitored items in the Voice Alarm system.
If the ‘System Configuration’ key-switch is turned the unit is in System Configuration mode and all
functions of the BVR20 can be changed.
The functionality of the Voice Alarm System can be altered in this mode.
As incorrect use of this mode could prevent an Alarm Condition from being detected
we strongly suggest that this mode is not entered unless the user is fully aware of the
system configuration.
If changes are to be made in this mode please refer to the relevant pages of this manual on how to
achieve the changes required.
To discourage leaving the unit in “System Configuration” mode the key cannot be removed from the
switch until it is returned to the “Normal” position.
When the unit is first powered up, various settings and controls will require setting up in the
“Configuration” Mode.
Once these have been set, the internal memory will hold this information. Should mains and/or battery
power loss occur, the settings will remain in the memory.
