3-Wire Volume Override; Connecting Audio Inputs; 4.10.1 Connecting Bgm Sources - Bosch Plena Installation And User Instruction Manual

Plena Voice Alarm System | Installation and User Instructions | Installation
4.9.2

3-wire volume override

To create a 3-wire volume override, see figure 4.10:
• Connect the NC contact of the Volume Override to the
0 pin of Ext Booster In.
• Connect the NO contact of the Volume Override to the
100V Call out pin.
LBB1990/00
Voice Alarm Controller
Int Booster
BGM/Call
Ext Booster
A
100V
Z1
0
100V
Z2
0
100V
Z3
0
100V
Z4
0
100V
Z5
0
100V
Z6
0
Ext 100V
Booster
In 0
DC In 24V
100V
Z+
0V
figure 4. 1 0: 3-wire volume override
Bosch Security Systems | 2004-06 | 9922 141 10371en
1 Channel 2 Channel
BGM/Spare
N.C./Spare Call
Override/Trigger Output
B
24V
N
100V NC
Z1
Z1 EMG
COM
0
NO
Z2
100V
NC
Z2
COM Fault
0 Z3
NO
100V
NC
Z4
Z3
COM Call
0
NO
Z5
100V
NC
Z4
24V Volume Ov
0
Z6
NO
100V
Z5 TRG 1
TRG2
0
100V Out
Z6
0
100V
Int
70V Booster
Out
0
GND
100V Call out
Extern
4. 1 0

Connecting audio inputs

The controller accepts two types of audio sources:
• BGM sources (see section 4.10.1).
• Mic/line input with VOX functionality (see section
4.10.2).

4.10.1 Connecting BGM sources

The controller provides two sets of double cinch sockets
for the connection of background music. The following
inputs can serve as audio sources:
table 4.7: Audio sources
Audio source Description
CD/Tuner A CD or a tuner.
AUX Auxiliary sound equipment.
Use a double cinch hifi-cable to connect an audio
source. For each set of double cinch sockets, the signals,
connected to the L (left) and R (right) sockets, are mixed
to form a single input signal.
LBB1990/00
Voice Alarm Controller
In
CD/Tuner
figure 4. 1 1: BGM inputs
en | 38
AUX