Fig 5b. BExCS110-05D AC Simplified Block Diagram for
independent operation (negative switching)
Fig 6a. BExCS110-05D AC Simplified Block Diagram for
simultaneous operation (positive switching)
Fig 6b. BExCS110-05D AC Simplified Block Diagram for
independent operation (positive switching)
13.2
Stage Switching
13.2.1
Units First Stage Tones
Stage one (S1) Operation
Simply connect the supply
voltage to the + and -
supply terminals, (see fig.
6).
13.2.2 DC Units Second and Third Stage Tone
Selection
For units set up for –ve switching (default setting):
Stage two (S2) Operation
Power +ve and –ve, link a -
ve supply line to the S2
terminal.
Dip switch alters stage 2
tone.
Stage three (S3) Operation
Power +ve and –ve, link a -
ve supply line to the S3
terminal.
Dip switch alters stage 3
tone.
For units set up for +ve switching (refer to 13.3):
Stage two (S2) Operation
Power +ve and –ve, link a
+ve supply line to the S2
terminal.
Dip switch alters stage 2
tone.
Stage three (S3) Operation
Power +ve and –ve, link a
+ve supply line to the S3
terminal.
Dip switch alters stage 3
tone.
Fig. 6a DC Terminals
Fig. 6b Beacon DC Terminals
13.3
Stage Switching Polarity (DC Units
Only)
The BExCS110-05D DC sounders has the facility to use
ve or –ve switching to change the tone to the second
and third stages. Negative switching is the default setting. For
–ve switching connect the two headers on the pcb to the left-
hand (marked –ve) and centre pins. For +ve switching
connect the headers to the right hand (ve) and the
centre pins. (Refer to Fig. 7)
Volume Control
DIP Switch
DC Terminals
Stage Headers
S2
S3
-
+
-
-
+
+
Flip / Flop
Pin Header
Interconnecting Terminals
to sounder PCB
(simultaneous
mode of operation)
