Bosch Plena BGM Source Operations Instructions download pdf (Page 17)

Bosch Security Systems | 2003-09 | 3922 988 25012en

Plena BGM/Paging System | Installation and Operating Manual | en | 17

5Operation

5.1 Operation of mixer amplifier

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.

Operation

Plena BGM/Paging System

Power

Zone 1 Zon e 2

Master

CD/Tuner

Aux

Select

-12 -12

-9 -9

-6 -6

-3 -3

0dB 0dB

-15 -15

Repeat

Program

Folder

M1/6 M2/7 M3/8 M4/9 M5/10 Shift Program

Scan

FM/AM

CD/MP3

1 2

0dB

-6 dB

-20 dB

12 3 4 6 7 11 12

29 25 23 22 20242728 21 18 17192630

5 8 9 10

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23 24

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