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Bosch Praesideo system overview

Praesideo is a fully digital public address system that meets all the requirements placed by professional users on a public address/emergency system. The system brings highly innovative and advanced digital technology to the public address market. The processing and communication of both audio signals and control data entirely in the digital domain makes the system superior to other currently available public address and emergency sound systems. Digital signal processing allows significant improvements in audio quality to be achieved. The Praesideo system is designed for configuration from a PC, which makes installation and setting of operating parameters very simple and user-friendly.

The Bosch Praesideo systems delivers many features and benefits to the user, click to view more information.
- Digital processing
- User-friendly software control
- Network approach
- High system flexibility
- Combination of functions
- Distributed control
- IEC 60849 certified
- External interfaces
- Reduced installation costs

Digital processing
All audio processing is performed in the digital domain. Communication between the units is via plastic fiber or glass fiber cabling, depending on the distance between the units. The cabling uses the daisy chain principle. This makes the cabling and installation very quick, simple and easy. The system cabling is a closed loop, which allows redundancy to be achieved.

User-friendly Software Control
The system is supplied with user-friendly software for system configuration. This allows all system functions to be configured. The software is based on web technology, which gives authorized users full freedom of configuration in terms of time and location. The software also provides clear indication of any parameters, which have not been programmed before exiting from any stage of the configuration process.

Network Approach
The system architecture is based on daisy-chaining of the units. It is possible to add or remove equipment anywhere in the network without affecting the performance of other units, provided that the network connection is available. This makes the system easily expandable, users can start with a small system in the initial stage and expand the system later simply by adding new units to the network. The system can be configured for redundant cabling using a ring cabling structure.

High System Flexibility
The Praesideo system is a highly versatile system which gives the user a high degree of flexibility in the number of zones, call stations, audio inputs and outputs, control inputs and outputs, etc.

Combination of Functions
The Praesideo range of equipment has multiple functions combined in a single unit. This feature drastically reduces the number of different types of equipment used in the system. For example functions like audio processing, audio delay, amplifier monitoring including spare switching and speaker line
monitoring are provided in the power amplifier unit itself. This makes the overall system highly cost-effective. The flexible architecture of the Praesideo range of equipment allows the customer to locate any type of equipment anywhere in the building. The configuration software enables the user to configure all the functional parameters. No programming is required at the equipment end, which drastically reduces the installation and commissioning time.

Distributed Control
The system is designed for distributed control of various system functions. The external interfaces, which are control inputs and outputs can be located anywhere in the network. The processing of audio input and output signals is located in each unit. This allows the network controller to concentrate on other activities like routing of announcement taking actions on control inputs, etc. As a result the response times are much shorter than for systems with centralized processing of all signals.

IEC 60849 Certified
The Praesideo range of equipment complies with the various emergency standards, which are applicable all over the world. In fact Praesideo is the first system which is certified according to the IEC 60849 standard. The network controller is capable of monitoring all the units in the system, from the microphone capsule of the call station to the loudspeaker line. A built-in memory stores the last 200 fault messages. Any fault is reported back to the network controller. The system also meets emergency requirements for emergency call stations. The open system concept, with the possibility for large numbers of control.

External Interfaces
The interfaces to the system can be audio, control input or Ethernet. The ethernet open interface is provided at the network controller. The audio and control inputs can be anywhere in the system, for example at the power amplifier, audio expander or network controller. The system accepts even low-level signals via the control inputs. The configuration allows the user to configure the input to initiate the desired actions in the system. The flexibility to route any input from one system unit to another makes it possible to use the Praesideo range of products for a wide range of public address and emergency sound system applications.

Reduced Installation Costs
The Praesideo architecture uses the daisy chain principle for both data and audio signals. This makes the system wiring very cost-effective, using 2 fiber cores for data and audio communication and a copper wire pair to supply power to the units. Power supply for the system units can be provided locally if the distances are very long. Combining various functions in a single unit also makes the equipment more cost-effective than systems in which separate units have to be purchased for all the specific functions. This combination of functions also saves lot of rack space and further reduces installation costs.

For more information about Bosch Praesideo voice evacuation systems please do not hesitate to contact us directly. Or if you know which part you are looking for, please complete our quotation request form and our Bosch team will respond to your enquiry immediately.



NTE Limited, 1 Faraday Road, Peterlee, Co Durham, SR8 5AP. Registered in England no. 3451873