Praesideo 3.5 Installation and User Instructions 9 System Configuration

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43.3.4 Audio outputs

taken over from the main amplifier that this spare amplifier replaces when it becomes active. The output configuration of a spare amplifier is only valid when it is in spare state.

When the spare amplifier takes over a main amplifier, the configuration of the main amplifier is copied. Line/Lsp Supervision can be used to supervise the interconnection between the spare amplifier and the connected main amplifiers.

If the connected main amplifiers use Single Line/Lsp Supervision, then the spare amplifier must not use Multiple Line/Lsp Supervision, otherwise a conflict will arise between both supervision slave boards when the spare amplifiers takes over the from the main amplifier. If the connected main amplifiers use the Multiple Line/Lsp Supervision, then the spare amplifier can also use Multiple Line/Lsp Supervision.

figure 43.13: Configure power amplifier, step 5

Power amplifiers that are configured as spare amplifiers do not have the Delay (distance) setting. This setting is

table 43.9: Audio outputs configuration

Item

Value

Description

Output

 

Unique name for the audio output. The output can be

 

 

enabled and disabled using the checkbox.

Delay

0 to 95108 ms (PRS-1P500)

Sets the loudspeaker alignment time, also presented

 

0 to 47554 ms (PRS-2P250)

as distance in meters and feet.

 

0 to 23777 ms (PRS-4P125)

 

 

0 to 1479 ms (LBB4428/00)

 

Amplifier supervision/

On, Off

Switches the pilot tone to on (On,) and off (Off). The

Pilot tone

 

pilot tone is used to supervise the amplifier channel for

 

 

failures and for supervision of the loudspeaker line and

 

 

loudspeakers.

 

 

If set to On, the pilot tone enables supervision and an

 

 

internal calibration keeps the pilot tone at an optimum

 

 

level. If the load on the line changes by the addition or

 

 

removal of loudspeakers, the pilot tone stays at the

 

 

optimum level.

GND Supervision

On, Off

Switches ground supervision of the loudspeaker line

 

 

on (On) and off (Off).

Line/LSP Supervision

None

Sets the type of line or loudspeaker supervision.

 

PRS-SVSET (Single)

 

 

PRS-SVCO (Multiple)

 

Configure supervision

 

Opens a screen to configure LBB4441 and LBB4443

devices

 

supervision devices (see section 43.3.5).

Bosch Security Systems 2011-02

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Bosch Appliances 3.5 Delay To 95108 ms PRS-1P500, To 47554 ms PRS-2P250, Pilot tone, GND Supervision On, Off, Devices

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