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Plena Message Manager | Installation and Operating Manual |
The message manager can be used with all Plena amplifiers via the Cinch output (4) or the XLR Output (6). The
level of the messages can be set via the message volume control (2).
To fully benefit from the features of the message manager in the overall Plena system (e.g. to distribute pre-recorded
messages to pre-programmed zones) the unit must be connected via the system pre-amplifier LBB1925. To do this,
use the RS232 cable and the audio cable supplied.
There are several ways to connect the message manager to the system pre-amplifier:
-
Connecting the Cinch output (4) of the message manager to the Cinch PC Audio In (R) line input of the sys-
tem pre-amplifier, as shown in figure 3.2 (in which the LBB1961 functions as a BGM source).
-
Connecting the XLR output (6) of the message manager to the points 1 and 3 of the 8-pole DIN socket of the
system pre-amplifier.
3.3 Loopthrough audio connections
Figure 3.3
It is possible to connect the LBB1965 message manager between a mixer pre-amplifier and a power amplifier.
When the message manager is not active, the mixer pre-amplifier is routed to the power amplifier. However, when
the message manager becomes active, this loopthrough connection is interrupted and the message manager is
switched to the power amplifier.
Figure 3.3 shows this configuration example in which the Plena Mixer Pre-amplifier LBB1920 is used with a Plena
Power Amplifier LBB1938. This is a high priority application, as the message manager has absolute priority.
Bosch Security Systems | 2003-09 | 9922 141 50502en
Dir.Out1
Dir.Out2
Dir.Out3
Dir.Out4
+
GND
GND
+
3
1
1
2
2
-
1
-
1-
3
1-
3
5
4
3
3
2
4
5
4
5
1/Line
2/Line
Loop through
Supervision
C
NC
NO
LBB 1965/00
In
Pilottone
8900 196 5005
Mains
Trigger Input 1-6
OFF
Out
ON
Pilot Message
In
Out
1 2 3 4 5 6 7 8
Tone
Input 1 Prior ity
Input 1
Input 2
Slave Input
Loopthrough 1
Prior ity
Enable
100V
Input 2 Program
Loopthrough 2
Input 1 Prior ity
+
2..24V-Input 1
-
0V-Input 2
Input 2 Enable
+
2..24V-Enable
-
0V-Mute
Sla ve Input 100V
100V
2..24V
GND 2..24V
GND
100V
0
0
Default Off
Default On
Input 1-Prior ity
Input 2-Program
Input
Loopthrough
Input
Loopthrough
External settings and connections
Ins/ Casc / Emgln
Ins/ Casc Out
Master Line Out
Master Mic. Out
Ins/Casc
1-
3
4
5
Warning
1-
3
1-
3
This apparatus must be earthed
4
5
4
5
3/Line
4/Line
+
Msg Active
Trigger Input
RS232 to LBB1925
24V
NC
C
NO
1
2
3
4
5
6
7
8
9
10
11
12
Fault
GND
RS232 to PC
Direct O utput
100V
0
70V
0
8ohm
100V/70V
100V
0
70V
Prior ity O nly
Prior ity Controlled O utput
0
No Pr ior ity
Prior ity O nly
0
Prior ity
100V
0
LBB1920
115V
230V
LBB 1920/00
8900 192 00005
Apparatus delivired
connected for 230V-
115/230V~,50/60Hz
No.
Rated input
power: 25VA
T0,5AL250V
L
EMG Out
DC In
DC Out
R
+24V-
+24V-
LBB1965
Apparatus delivered connected for
230V~
230V~ 50/60Hz
WK
S/N
Rated Input
Power:50VA
Warning
To.5L250V
This apparatus must be earthed
LBB1938
0
8
No Prior ity
100V
0
Warning
This apparatus must be earthed
en | 14
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