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Plena BGM/Paging System | Installation and Operating Manual |
5
Operation
5. 1 Operation of mixer amplifier
1 2 3 4
5
Plena BGM/Paging System
Repeat
0 dB
Program
-6 dB
-20 dB
Folder
1
0
Power
31
30
29
Figure 5.1
5.1.1 Source selection
•
Use the input volume controls (30, 28, 27 and 25) to balance the sound level of the microphone inputs and the
background music.
•
Use the music source selection button (26) to select the built-in CD-player/tuner or an auxiliary source. If the
auxiliary source is selected, the CD-player and the tuner are switched off. If the CD-player/tuner is selected, the
CD-player will be active as long as it is playing. If the CD-player stops, the tuner will take over automatically.
5.1.2 Volume and tone control
•
Use the master volume control (22) to control the volume of the music/microphone mix.
•
The bass and treble tone controls (23 and 24) affect the microphones as well as the music.
5.1.3 Zone selection
•
Use the output attenuators (20 and 18) to balance the sound level in zones 1 and 2, respectively.
•
Use the zone selection buttons (21 and 19) to switch a zone on or off. The priority microphone active LED (17)
indicates that a priority call is active. Such a priority call overrides the zone selection and attenuation settings. A
priority call addresses all zones with 0 dB attenuation.
5.2 Operation of tuner
5.2.1 Station selection
•
Use the tuner FM/AM selection key (13) to choose between FM and AM reception.
•
Use the tuner frequency up/down keys (12) to step up or down in frequency. Prolonged pressing makes the tuner
search for the next station.
Bosch Security Systems | 2003-09 | 3922 988 25012en
6 7
8
9
2
Select
0
3
0
0
28
27
26
25
Operation
CD/MP3
CD/Tuner
Master
Aux
0
24
23
22
10
11
12
FM/AM
Scan
M1/6
M2/7
M3/8
M4/9
M5/10
Shift
Program
Zon e 1
Zon e 2
-9
-6
-9
-6
-12
-12
-3
-3
0dB
0dB
-15
-15
21
20
19
18
en | 17
13
14
15
16
17
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