VIGIL EVAS DSP
Controlled Voice Alarm Router
The latest edition to
Baldwin Boxall's expanding Voice Alarm series is the VIGIL 'EVAS'
range of DSP controlled products; the BVRD2M master unit, BVRD2S
and BVRD2SM slave units. All are of one unit 19" rack format.
True to Baldwin Boxall's design philosophy the units are designed
with all current and anticipated voice alarm standards in mind,
including BS5839 part 8 and EN60849, allowing anyone to specify
with confidence in this rapidly evolving sector.
VIGIL EVAS BVRD2M ~ DSP Voice Alarm Router
The BVRD2M router has eight electronically balanced inputs and seven electronically balanced outputs. Inputs 1 and 2 are normally reserved for fire microphones and are configurable with an 'all call' processor bypass (one further input can also be configured this way). In the unlikely event of a processor failure the unit also has an 'all call' fail safe emergency message generator. All eight inputs have both independent priority and level settings, allowing for dual mode; emergency and normal page. Any of the inputs or outputs can be aurally monitored through a loudspeaker on the front panel.
All outputs have ten band parametric equalisation with audio delay and inputs have three band parametric plus bass and treble equalisation to provide a high degree of audio processing, enhancing the intelligibility of the system.
The unit has a built-in real time clock for detailed logging of fault history and reporting, both of which can be accessed through the unit's USB2 connection. The BVRD2M has ancillary output/input modules which connect via its CANBUS port, this feature also allows for simple rack wiring. Currently three module options are available; please refer to the BVRD2M CANBUS modules table on the right for further information.
Up
to six messages, each of a maximum 57 seconds, with a bandwidth
of 18 KHz (CD quality), can be stored in the unit's flash memory,
each with independent level, surveillance and timing. These are
easily changed via the front panel password protected USB connection;
also used to configure the unit. Each unit has nine selectable chimes
of up to eight seconds.
A total of 128 BVRD2M units can be networked using fibre, copper or VO I/P to produce a truly sophisticated VA network.
BVRD2M ~ Features:
 DSP control.
Nine chime/preannouncement tones, eight seconds.
Ten band parametric EQ on all outputs with audio delay of up to one second.
1U in height.
Three band parametric plus bass and treble EQ on all inputs, with limiter/compressor.
Six flash stored messages - easy to change via USB2 port, 57 seconds.
Seven outputs, electronically balanced 0dBM audio outputs.
Eight inputs, electronically balanced line -20dB audio inputs.
All call, one off fail safe emergency message generator twenty second EPROM in the event of processor failure.
Ambient noise sensing.
Auto amplifier changeover, one in ten.
CANBUS ports for module connection.
Decentralised networking of up to 128 units.
Front panel encoder for simple programming.
Fully configurable using USB2 connection (Type A to Type B USB2 lead required, not supplied).
Fully monitored, surveillance at either 30Hz or 20KHz; all faults stored within an historic log.
Inputs 1 and 2 can bypass processor.
Inputs 1 to 8 may incorporate two priority levels, one for emergency the other for normal use.
Message synchronisation, even on a decentralised system.
Priority levels to a maximum of fifteen, if two concurrent routes are set at the same priority they will be treated on a first come first served basis. Priorities are changeable.
Real time clock indicates time, date, month and year. Used for date stamping the fault log and may be selected for night volume reduction.
Remote diagnostics via a modem.
Two RS485 ports for networking, microphones, etc.
Zone grouping and barring on BVRM Voice Alarm Controller Microphone.
BVRD2M ~ Hardware Facilities:
Audio
8 inputs, electronically balanced line -20dB audio inputs, inputs 1 & 2 have processor bypass - expandable by a further 12 with the BRD2S slave unit.
1 x all call fail safe emergency message generator 20 second EPROM in the event of processor failure.
7 x zone electronically balanced 0dBM audio outputs - expandable by a further 16 with the BVRD2S slave unit.
Control Inputs:
1 x opto coupled sounder circuit 'all evacuate' input from the fire detection system. This input has an all call processor bypass in the event of processor failure.
1 x opto coupled sounder circuit programmable input from the fire detection system.
6 x analogue voltage sensing inputs for monitored input access, ambient noise sensors, remote volume controls.
3 x simple contact closure inputs for unmonitored input access, etc.
Control Outputs:
6 x NPN collector outputs 40V @ 100mA for busy, etc.
1 x volt free relay changeover contact for common fault.
Serial Ports:
2 x RS485 half-duplex ports for communicating to control microphones, fire detection systems, network control, fault reporting.
1 x CANBUS port to communicate to surveillance modules, etc.
1 x front panel mounted USB2 port to configure the system, fault diagnostics, fault reporting, download messages, etc.
BVRD2M ~ Canbus Modules:
BVRDACO
10 x BEL line surveillance with earth leakage fault detection
11 x amplifier surveillance, 10 with auto changeover
1 x RS485 half-duplex port for communicating to control microphones, fire detection systems, network control, fault reporting.
BVRDFPI
24 x opto coupled inputs from fire detection systems
1 x common fault volt free changeover relay contacts.
1 x RS485 half-duplex port for communicating to control microphones, fire detection systems, network control, fault reporting.
BVRDCI
16 x analogue voltage sensing inputs for monitored and unmonitored input access, ambient noise sensors, remote volume controls, etc.
4 x volt free changeover relay contacts for busy, etc.
4 x NPN open collector outputs 40V @ 100mA for busy, etc.
1 x RS485 half-duplex port for communicating to control microphones, fire detection systems, network control, fault reporting.
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