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IBVR20 software 8.43.doc
Issue 1
BVR802 – Quad EPROM based digital message module
This card enables four OPT 402 message modules to be fitted allowing up to seven messages to be
stored on one card. It has the following features:-
Three dual messages plus one single message – 7 x 32 seconds in length or four at 64 seconds.
Each message has output attenuation.
Bass, Treble and two mid band controls @ 1KHz & 2.5KHz.
200Hz 12dB/Octave high pass filter.
Aural and visual monitor.
20 sounder circuit opto coupled inputs.
OPT402 CH1
OPT402 CH2
OPT402 CH3
OPT402 CH4
(MESSAGE 1)
(MESSAGE 2&3) (MESSAGE 4&5) (MESSAGE 6&7)
EVAC ONLY
S
O
UN
DE
R
CI
R
C
U
IT
S
1 - 10
S
O
UN
DE
R
C
IRC
UI
T
S
11
-
2
0
BVR802
ONE CHANNEL SHOWN
+5V
+15V
RESETABLE
FUSE
1
2
-
+
-
-
+
0dBM
OUTPUT
L/S MON
TREBLE
2K5
1K0
BASS
+15v
MESS START
L/S MON
VOL
+6dB
20 X
OPTO COUPLED
INPUTS
OPT 402
MULTIPLEXER
MEMORY
FAULT
A0
A1
A2
STROBE
AD3
AD4
AD5
+5V
2K2
TO MULTIPLEXER
OPTO COUPLED
INPUTS
CLOCK
DATA
OPT402 Positions on BVR802
OPT402 Positions on BVR802
OPT402 Positions on BVR802
