Bosch Security Systems | 2003-09 | 3922 988 99483en
Plena System Pre-amplifier | Installation and Operating Manual | en | 19
6 About the call stations
Figure 6.1
Figure 6.2
The Plena Call Stations must be used in combination with the system pre-amplifier LBB 1925. Both call stations
have a loopthrough connection to add an additional call station. The 6-zone call station (LBB 1946) has the
possibility to send a message to one zone, a group of zones or all zones. The all-call call station (LBB 1941) can only
send a message to all zones.
About the call stations
All Zone
Green
Mic.
JP5
6dB
0dB
-15 dB
JP2
Gain Preset
Balance out
Power Supply
Priority level/chime tone pre-set
Priority
ON
12 3456 78
Select
Internal Chime External Chime
Select
RS-485
4
2
1
3
6
7
5
LBB1946
LBB1941
NC
Chassis Ground
8
Driver/Receiver
M.C.U.
Phantom Supply
P.S.
JP3
JP4
+
-
Speech filter ON/OFF
Amber
Press to Talk
Z1
Amber
Amber
Amber
Amber
Amber
Amber
Amber
Z2
Z3
Z4
Z5
Z6
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