Bosch Security Systems | 2004-06 | 9922 141 10371en
Plena Voice Alarm System | Installation and User Instructions | Installation en | 44
4.15.3.1 Connecting an external booster to the con-
troller
To connect an external booster to the controller, see
figure 4.23.
4.15.3.2 Connecting external boosters to the router
To increase the power in the system, optionally, to each
router one or two external boosters can be connected
(see figure 4.24). The function of an external booster,
depends on the mode for which the controller is
configured:
• In 1-channel mode, external booster 1 is used to
amplify calls and BGM, in addition to the
controller’s internal booster. In 1-channel mode,
external booster 2 has no function.
• In 2-channel mode, external booster 1 is used to
amplify BGM, in addition to the controller’s internal
booster. External booster 2 can be connected to
amplify calls, in addition to the controller’s
(mandatory) external booster.
To connect external booster 1 to a router, see figure
4.24.
figure 4.23: Connecting an external booster
100V
100V
0V
line in
12
3
1
3
GND GND+
-
COM
NC
TRG2
Z2
Z3
Z4
Z5
Z6
Ext
Booster
In
DC In
TRG 1
Int
Booster
Out
24V
Fault
Call
External Booster
Out
100 V
0
100 V
0
100 V
0
100 V
0
100 V
0
100 V
0
24V
70V
Z2
Z3
Z4
Z5
Z6
GND
NC
COM
NO
NC
COM
NO
NO
100 V
0
Call out
0
100 V
0
100 V
0
100 V
0
100 V
0
100 V
0
Z2
Z3
Z4
Z5
Z6
NO
Volume Override
100 V
LBB1990/00
Voice Alarm Controller
LBB1930/00
Booster Amplifier
figure 4.24: Connecting external booster 1
0 100V 0 100V70V0100V
TRG1 TRG2
NC
B
0 100V 0 100V 0 +24V-
Booster 2 in
Z6
DC In
Z1
Z2
De
Th
Booster 1
Out
GND
Booster 2
100V
100V
0V
line in
12
3
1
3
GND GND+
-
LBB1930/00
Booster Amplifier
LBB1992/00
Voice Alarm Router
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