Controls & Connections (Front); Controls & Connections (Rear) - Bosch LBB 1925 Installation And Operating Manual

Plena System Pre-amplifier | Installation and Operating Manual |
1. 1 Controls & Connections (front)
Plena System Pre-amplifier
1 0 dB
-6 dB
-20 dB
2
/Line
Power
3
0
Figure 1.3
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
1.2 Controls & connections (rear)
11 12
Trigger 1 Trigger 2
Tel/EMG
0
1. Audio+
2.0V
/Line
3.Audio-
4.24Vd.c.
/Line
1- 3
3 1
4 5 5 4
2
1 2
Figure 1.4
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)
Bosch Security Systems | 2003-09 | 3922 988 99483en
4 5
13 14
LBB1925/10
890019251005
115/230V~,50/60Hz
No.
5. Allcall
CD
RS232
6.Data-
PCAudoln
7.Data+
8.Chs.GND
L
R
7 6
8
3 1
MasterOut Out
5 4
2
3 5
4
About the system pre-amplifier
Select
CD AUX
0
6 7 8
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
15 16
Aux
100V 0
+ +
GND GND
2 - 1 1 - 2
3 3
100V 0 100V 0
6
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
Z1 Z2 Z3
Z4 Z5 Z6
9
7 17 18 19
Apparatus delivered
connected for 230V-
100V 0 100V 0 100V 0
100V 0 100V 0 +24V- +24V-
Warning
This apparatus must be earthed
7 8 9
en | 8
11
10
20
115V 230V
21
22
Rated Input
Power : 50VA
T0.5L 250V
10