76 en | Operation Plena Voice Alarm System
9922 141 1037x (V2.16) | V0.6 | 2011.09 Installation and Operation manual Bosch Security Systems B.V.
7.2.3 Adjust volume
The voice alarm controller has two types of controls to adjust the BGM volume (see
Figure 7.5). The overall (maximum) volume of the BGM source is set with the master volume
control, which is located below the BGM source selector (Select button, see Figure 7.3). Per
zone that is connected to the voice alarm controller, the local volume can be adjusted with the
zone volume switches, which are located below the zone selection buttons (Zone select, see
Figure 7.4. Each zone volume switch has six settings, ranging between 0 dB and -15 dB.
Figure 7.5 BGM volume controls
The local volume in the zones that are connected to voice alarm routers must be adjusted
using local volume controls, that must be connected to the loudspeaker line of each individual
zone.
7.2.4 Adjust frequencies
The voice alarm controller has two rotary knobs to adjust the sound of the BGM (see
Figure 7.6).
– Use the upper rotary knob to adjust the treble or high frequency content of the BGM.
– Use the lower rotary knob to adjust the bass or low frequency content of the BGM.
Figure 7.6 BGM tone controls
7.3 Business calls
Business calls can only be distributed with call stations. It is not possible to use a hand-held
emergency microphone to distribute business calls. Proceed as follows to distribute a
business call:
1. Select the zones (see section 7.3.1 ).
2. Make the announcement (see section 7.3.2 ).
NOTICE!
It is also possible to distribute business calls using business trigger inputs. When an business
trigger input is activated, the system automatically takes the action that is programmed with
the configuration software.
NOTICE!
See the Configuration Software Manual (9922 141 1038x) for more information about the
configuration software.
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