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External Connections; Induction Loops; Audio Inputs - Bosch PLN-1LA10 Installation And User Instructions Manual

Security systems plena loop amplifier

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Table of Contents
Plena Loop Amplifier | Installation and User Instructions | External Connections
4

External connections

4. 1

Induction loops

Connect the induction loops to the rear of the loop
amplifier (refer to figure 4.1). Always twist wires that run
parallel and close to each other to avoid additional and
undesired inductions.
figure 4. 1 : Induction loop, connection
table 4. 1 : Induction loop, details
Number of connections:
1x screw terminal
Location:
Rear side
Current:
max. 10 A, max. 6 A
RMS
Induction loop DC resistance:
0.5 to 3 Ω
Induction loop area:
2
max. 600m
@ 100 mA
Bosch Security Systems | 2005-05 | 9922 141 50672en
Mast er
In
Slave
Line Out
Out
Maste
Metal
r in
Slave
90º
comp
loss
out
ensat
ion
Fault
Prior ity
input
Supe
rvisio
1
1
n
NO
AGC
C
NC
115V
Limite
r
5K 10K
230V
On
2
2
Off
Appa
ratus
Conn
deliv ered
ected
for 230V
100V
Phanto
0
m
Vox
Mix
Line fuse:
230V
On
Phanto
m
115V
3A
Off
Mic
6A
Line
Loop
Out
On
Com
Off
Mic
Line
L in e fu
s e : 2 3
0 V 3 A
1 1 5 V
6 A
L o o p
O u t
C o m
/m
RMS
4.2

Audio inputs

You can connect audio sources to the audio inputs of
the loop amplifier. For example, you can connect a
power amplifier and a microphone (refer to figure 4.2).
Mast er
In
Slave
Out
Maste
Metal
r in
Slave
out
90º
comp
ensat
loss
ion
Prior ity
input
1
1
AGC
Limite
r
5K 10K
100V
0
Vox
Mix
1 1
Ph an to
m
Vo x
M ix
O n
O ff
+
100V
1
-
GND
2
GND
0V
3
1
3
-
figure 4.2: Audio inputs, connection
table 4.2: Audio inputs, details
Number of connections:
2x XLR sockets
Location:
Rear side
Sensitivity:
Switchable, 1 mV/1 V
Impedance:
> 1 kΩ
Dynamic range:
100 dB
Signal-to-noise ratio:
63 dB @ max. volume
75 dB @ min. volume/mute
Headroom:
25 dB
Phantom power:
Switchable, 16 V
VOX functionality:
Switchable, input 1 mutes input 2
en | 21
PLN-1LA10
Loop Amplifier
Line Out
Fault
Supe
rvisio
n
NO
115V
C
NC
On
230V
Off
2
2
Appa
ratus
Conn
ected
deliv ered
for 230V
Phanto
m
Line fuse:
Phanto
230V
3A
On
Off
m
115V
6A
Mic
Line
Loop
Out
Com
On
Off
Mic
Line
2 2
Ph an to
m
O n
Ph an to
m
O ff
M ic
O n
O ff
GN D
+
1
-
2
3
lin e o
u t
PLN-1P120
Power Amplifier
2
+
100V
230V
- 240V
70V
-
0
0
24V
8
DC IN
-
+
line out
Line
250V
fuse
T1A
Warn
ing
This
appar
Appa
ratus
atus
must
conn
deliv
be earth
ecte d
for 230V
ered
ed
-

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