System Overview - Bosch PAVIRO PVA-4CR12 User Manual

PAVIRO Controller
3

System overview

This chapter explains the basic features of the PAVIRO system and its most important
functions.
General overview
The PVA-4CR12 is the controller of the PAVIRO system. The controller contains all necessary
audio functions and is responsible for controlling and monitoring the complete PAVIRO
system. The type and number of connected audio sources, amplifiers, and relays are extremely
variable, and can be adjusted to individual requirements. A single controller can manage up to
16 call stations and up to 492 loudspeaker zones. Control inputs and outputs can be used for
controlling and monitoring functions. Both logic level and the analog level signals can be
processed. Configuration is performed on a PC using the IRIS-Net software, which also
provides access to system documentation and the required user interface. A configuration can
be changed at any time, and adjusted to new circumstances without having to modify the
system installation. A PC is required only for loading or changing the configuration; it does not
need to be connected during live operation. In many cases, however, a permanently connected
PC is helpful; for example, to provide detailed status displays and log reports, real-time
loudspeaker and sound control, or for remote diagnosis and maintenance via the network. The
user interface can be individually tailored, and up to 32 password levels can be assigned.
Audio routing
A digital audio matrix is integrated into the controller. Up to 8 local audio inputs, 2 message
playback channels, and 4 internal generators are available. The 4 audio output channels are
connected to the amplifiers via a 4-channel audio bus. The amplifiers include an audio input
router where the correct input signal is selected automatically. Each loudspeaker circuit can
be connected with amplifier outputs via a relay matrix, which allows for 492 loudspeaker
zones. The controller manages the audio signals, and distributes them according to priority. In
addition to the call stations, other audio sources can also be connected to the audio inputs
such as microphones, mixing desks, CD players, MP3 players, tuners, and so on. A number of
different connections are available for optimum adjustment.
Audio processing
The controller provides separate volume controls with a mute function for each audio input
and audio output. Each audio input has a 3-band equalizer and a compressor for optimal
sound adjustment of the audio sources. All outputs are fitted with a 5-band equalizer and a
limiter. For the equalizers, the operator can select from five different filter types for each band
filter (peak, low-shelving, high-shelving, high pass, low pass). Volume levels, filter parameters,
and so on are set on the PC during configuration. However, these can also be changed in real-
time during operation using the graphical user interface, the special keys for the call stations,
or external operating controls.
Signal generators
The controller provides four signal generators: Two independent generators for generating
alarm signals and two independent generators for generating chime signals. Operators can
choose between 24 alarm types and six chime types that are available ex-works.
Message manager
The integrated message manager is for EVAC messages and alarm signals, as well as
commercial messages and chime/pre-chime signals. The message manager allows easy
configuration of EVAC and commercial messages, and other customized audio signals by using
the IRIS-Net software.
Bosch Security Systems
User manual
System overview | en 7
2022-11 | 07 | F01U306900