Filter
Top Products
Bosch Security Systems | 2011-02
Praesideo 3.5 | Installation and User Instructions | 9 | System Configuration en | 349
43.3.4 Audio outputs
Power amplifiers that are configured as spare amplifiers
do not have the Delay (distance) setting. This setting is
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
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)
0 to 47554 ms (PRS-2P250)
0 to 23777 ms (PRS-4P125)
0 to 1479 ms (LBB4428/00)
Sets the loudspeaker alignment time, also presented
as distance in meters and feet.
Amplifier supervision/
Pilot tone
On, Off Switches the pilot tone to on (On,) and off (Off). The
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
PRS-SVSET (Single)
PRS-SVCO (Multiple)
Sets the type of line or loudspeaker supervision.
Configure supervision
devices
Opens a screen to configure LBB4441 and LBB4443
supervision devices (see section 43.3.5).