Connection And Indicators; Front Panel Indicators; Rear Panel Connectors And Switches - Bosch PLENA LBB1938/30 Installation And Operation Manual

PLENA power amplifiers
5

Connection and indicators

5.1

Front panel indicators

0 dB
-6 dB
-20 dB
Figure 5.1: LBB1930/20, LBB1935/20 and LBB1938/x0
1.
2.
3.
4.
5.
6.
5.2

Rear panel connectors and switches

Figure 5.2: LBB1930/20 and LBB1935/20
Bosch Security Systems B.V.
1
VU meter LED's for -20, -6, 0dB and power ON.
Pilot‑tone supervised function that monitors a 20 kHz pilot tone.
Battery supervised function to indicate battery operation.
Mains supervised function to indicate mains supply.
Overheat supervised function to give warning of overheating.
Air inlet cooling is made by forced ventilation from front to back. Amplifiers can be
stacked on top of each other. A supply of cool air from the front is necessary.
Input 1 Priority
Loopthrough 1
Input 2 Program
Loopthrough 2
Input 1 Priority +
2...24V- Input 1 -
0V- Input 2
Input 2 Enable +
2..24V- Enable -
0V- Mute
S lave Input 100V 100V
0
Installation and operation manual
20 19 18 17
Input 1 Input 2 Slave Input Fault Relays' Output
Enable
Priority 100V
Input
Pilot-tone
Detector
O On
NO COM NC
2..24V GND 2..24V GND 100V 0
Default O Default On
Input 1-Priority Input 2-Program
Input Input
1 2 3 4 5
Connection and indicators | en
2 3
Status
Pilot-Tone B t a e t y r
16 15 14 13
Apparatus delivered
connectored for 230V~
Battery Main Power
230V~ 240V~
Battery
Detection
O On
NO COM NC NO COM NC
100V
0
Direct O utput
70V
0
8ohm
100V 0 70V 0 8
100V/70V
S election (12A)
Priority Only
0
No Priority
0
Priority
Priority Controlled Output 24V DC In
100V 0 1 00V 0
Priority Only No Priority
6 7 8
2018.11 | V1.2 | LBB193x/x0
9
4 5 6
Mains O e v h r e t a
12
Power
Rated input
Power : 1600VA
11
10
9