Bosch LBB 1925 - Controls & Connections (front); Controls & Connections (rear)

Bosch Security Systems | 2003-09 | 3922 988 99483en
Plena System Pre-amplifier | Installation and Operating Manual | en | 8
1.1 Controls & Connections (front)
Figure 1.3
1.2 Controls & connections (rear)
Figure 1.4
1 VU meter (LED bar)
2 Power on indication LED (green)
3 Power on/off
4 Volume control, mic/line
5 Tone control, mic/line
6 Volume control, background music
7 Background music selection switch
8 Tone control, background music
9 Zone selection keys, background music
10 Headphone connection
11 Indication LED, call station active
0dB
-6 dB
-20 dB
Power
/Line
Select
CD AUX
00
Z1 Z2 Z3
Z4 Z5 Z6
4 567 9 10
11
8
1
2
3
Plena System Pre-amplifier
3
Tel/EMG
0
L
R
1-
45
/Line
/Line
Trigger 1 Trigger 2
PCAudoln
1. Audio+
2.0V
3.Audio-
4.24Vd.c.
5. Allcall
6.Data-
7.Data+
8.Chs.GND
RS232
CD Aux
MasterOut Out
100V 0100V 0 100V 0 100V 0
115V 230V
Rated Input
Power : 50VA
T0.5L 250V
Apparatus delivered
connected for 230V-
100V 0 100V 0
+24V- +24V-
This apparatus must be earthed
Warning
3
7
8
6
1
5
2
4
3 1
5
2
4
LBB1925/10
890019251005
115/230V~,50/60Hz
No.
3
1
+
-
2
GND
3
2
+
-
1
GND
11
1
12 1413 71718 19 2016
15
2
356 789 10
4
21
22
100V 0100V 0
About the system pre-amplifier
1 Mic/line input (DIN)
2 Mic/line input (XLR)
3 Call station input (8-pin DIN)
4 Audio input from PC (Cinch)
5 Master output (XLR)
6 Background music output (XLR)
7 100V LSP output (zone 1 to 6)
8 24V DC output for relays (terminal)
9 24V DC input (terminal)
10 Earth connection screw
11 Volume control (Tel/Emergency input)
12 Telephone/Emergency signal input
13 Alarm/time signal, trigger inputs
14 Control input for PC (RS232; 9-pin)
15 CD/ Tape/Auxiliary input (Cinch)
16 Tape output (Cinch)
17 Call active control output (terminal)
18 Call input from booster (terminal)
19 Music input from booster (terminal)
20 Mains voltage switch (115/230V)
21 Mains socket
22 Mains fuse