Bosch PLN?2AIO120 BGM, Инструкция по установке и эксплуатации

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Bosch Security Systems | 2008-09 | 9922 141 50762 en
Plena All-in-One 120 Watt | Installation and User Instructions | Equipment en | 15
VOX mode
Connect the microphone to the phone jack socket at the
front of the unit and enable the VOX mode with
configuration switch 2 (set to ON-position). This mode
will attenuate the background music or microphones 2
and 3 to a predetermined ducking level as long as you
speak into the microphone. Use the ducking level
control (17) at the rear of the unit to set the required
ducking level (see figure 3.3).
The VOX mode is normally used with hand-held
microphones such as the LBC 2900/15 for making
casual announcements, temporarily surpressing the
music. Background music and announcements will be
heard in the selected zones. The front connection for
microphone 1 does not have phantom power for electret
or condenser microphones, so a dynamic microphone
must be used. A chime is not available in this mode, but
you can select the speech filter via configuration
switch 4.
When no priority or VOX mode has been selected,
microphone 1 will just mix with the background music
or the other microphones to the selected zones.
3.4.7 Microphones 2 and 3, auxiliary
inputs and tape output
• Connect microphones 2 and 3 to the rear XLR-
sockets. Enable phantom power for these
microphones with configuration switches 6 and 7, if
you use electret or condenser microphones. These
microphones just mix with the background music
• Connect an auxiliary music source, such as a
tape/cassette recorder or the audio signal of a DVD
player, to the auxiliary Cinch-sockets on the rear.
Stereo signals will be converted to mono.
• The tape output sockets may be used for connection
to a tape/cassette recorder to record microphone
and background music signals. Both sockets provide
the same mono signal.
Note
If the ducking level is set to maximum, the music
volume will be fully attenuated; If the ducking
level is set to minimum, the VOX mode will
operate as a mixer.
figure 3.8: VOX mode connections
M1/6
M2/7 M3/8
M4/9 Scan
0 dB
-6 dB
-20 dB
3
2
2
1
Select
CD/Tun
er
Aux
-12 -9 -6
0dB
-15 -3
-12 -9 -6
0dB
-15 -3
Zon e 1
Zon e 2
Master
Power
M5/0
Memory
AM/FM
Plena
BGM/Pa
ging Syst
em
Repeat
Eject
0 dB
-6 dB
-20
dB
3
2
1
Power
Repeat
Eject
6.3 mm phono jack
figure 3.9: Microphones 2 and 3, auxiliary inputs and
tape output
Switch 1
2
3
4
5
6
7
Off(0 )
Mix
Mix
Chime
off
Speech filter Phanto
m off Phantom off Phanto
m off
Mic. 1 rear
1 front
1 rear 1
1 rear
2
3
On(1 )
Priority Vox
Chime
active
Flat
Phantom
on Phantom on
Phantom on
100V
0 100V 0
100V
0
0 8
0
8
Call On ly
Zone 1 Call/BGM
Zone 2
Call/BG M
Call Ac tive
Warnin
g
Aux In
FM
Anten na
Chime
Ducking
1 2 3 45
6 7
2 1
+
- GND
3
1-
4
3
5
1
2
115V~ 230V~
Apparatus delivered connected
for 230V~
This appa
ratus mus t be earthe
d
Rated inpu
t power: 400V
A Line fuse
T2.5L250V (230V~) T5L250V(1
15V~)
3
CVBS SDDIF
Video outpu
t
B-Y
Y/C
Yc
R-Y
8
Aux
In
2
1
+
-
GND
3
2
T
3
CVBS
SDDIF
B-Y
Y/C
R-Y
TAPE