Praesideo 3.5 Installation and User Instructions 9 System Configuration

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43.3.3 Audio inputs

figure 43.12: Configure power amplifier, step 4

table 43.8: Audio inputs configuration

Item

Value

Description

Input

 

Unique name for the audio input. The input can be enabled

 

 

and disabled using the checkbox.

Audio type

Line

Sets the type of audio source. This is either line (Line) or

 

Microphone

(Microphone).

Input gain

-8 to 7 dB (mic)

Sets the input gain of the audio input with reference to the

 

0 to 12 dB (line)

nominal value.

 

 

 

Input function

Auxiliary

Sets the input function. Auxiliary inputs (Auxiliary) can be

 

AVC

used to make calls. AVC inputs (AVC) are used to

 

 

measure the ambient noise level.

Phantom

On, Off

Specifies whether the microphone receives a phantom

 

 

supply (On) or not. This option is only visible if (2) is set to

 

 

Microphone.

Supervision

On, Off

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.

Connection supervision

On, Off

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.

Bosch Security Systems 2011-02

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Bosch Appliances 3.5 manual Microphone Input gain To 7 dB mic
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