Bosch Appliances 3.5 Audio inputs, 5: Configure network controller, step, Input, Audio type, Line

Praesideo 3.5 Installation and User Instructions 9 System Configuration

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43.2.3 Audio inputs

figure 43.5: Configure network controller, step 4

Caution

Only set Phantom to On for condenser microphones connected to the XLR connector of the audio input.

table 43.2: 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 (Microphone).
Input gain	-8to 7 dB (mic)	Sets the input gain for the XLR input and for the Cinch
	0 to 12 dB (line)	input (line only), with reference to the nominal input level.
Input function	Auxiliary	Sets the microphone function. Auxiliary microphones
	AVC	(Auxiliary) can be used to make calls. AVC microphones
		(AVC) are used to measure the ambient noise level. Note
		that microphones that are connected to the network
		controller or audio expander are not supervised. If
		supervision is required, connect the microphone to a
		power amplifier.
Phantom	On, Off	Specifies whether the microphone receives a phantom
		supply (On) or not (Off). This item is only available if (2)
		has been set to Microphone. The phantom supply is only
		active when the microphone input is activated for a call.
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