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Praesideo 3.5 | Installation and User Instructions | 9 | System Configuration
43.3.3 Audio inputs
figure 43. 1 2: Configure power amplifier, step 4
table 43.8: Audio inputs configuration
Item
Input
Audio type
Input gain
Input function
Phantom
Supervision
Connection supervision
Bosch Security Systems | 2011-02
Value
Line
Microphone
-8 to 7 dB (mic)
0 to 12 dB (line)
Auxiliary
AVC
On, Off
On, Off
On, Off
Description
Unique name for the audio input. The input can be enabled
and disabled using the checkbox.
Sets the type of audio source. This is either line (Line) or
(Microphone).
Sets the input gain of the audio input with reference to the
nominal value.
Sets the input function. Auxiliary inputs (Auxiliary) can be
used to make calls. AVC inputs (AVC) are used to
measure the ambient noise level.
Specifies whether the microphone receives a phantom
supply (On) or not. This option is only visible if (2) is set to
Microphone.
Switches supervision on (On) and off (Off) for the
microphone. This option is only visible if (2) is set to
Microphone. The phantom supply is only active when the
microphone input is active.
Specifies whether the 20 kHz pilot tone detector of the
input is enabled (On) or disabled (Off). This function is only
available if the Audio type is set to Line. It provides cable
and connection supervision if the source uses a pilot tone.
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