The central module in the base unit:­ interface, logic and decentralized intelligence of the NEXUS system

Signal generator for system-wide use

This central module provides a systemwide test signal, which consists of a sine tone with adjustable level and frequency, a white or pink noise.

NEXUS Logic Control as integrated media control

NEXUS Logic Control can be used to program the simplest to the most complex interactions and automations. Each base unit has a stand-alone logic unit that communicates with the entire NEXUS system. For example, the status of crosspoints can be evaluated or the level of specific signals can be monitored. In combination with other NEXUS boards, certain additional functions are available. Thus, relay inputs can be queried and set with the XRI card.
 In conjunction with complex conditions, Logic Control
 can trigger virtually any control functions throughout the NEXUS network, such as switching relay contacts, setting crosspoints, setting levels or even controlling mixer functions. This can also be used, for example, to integrate the NEXUS system into comprehensive external disaster systems or to trigger alarms.

Extensive internal and external synchronization options

The NEXUS system can be synchronized and the internal clock can be output via the integrated word clock inputs and outputs. The board can also synchronize the NEXUS system to any digital input. A sync hierarchy can be created so that, in the event of a source failure, an uninterrupted and inaudible fade over to the next sync source.

System state fail-safe memory

All volatile data is immediately stored on a battery-buffered SRAM memory and is retained in the event of a power failure or switch-off. This means that the system boots immediately to the last operating state and is ready for use again within seconds.

Determination of level data for level indication

The level measurement data converge on the XCPU card and can be visualized via the operating program.

System-wide level monitoring of any NEXUS I/Os

The XCPU card calculates the level data of the inputs of the respective base unit. By exchanging data with the other XCPU boards in the NEXUS network, each one can monitor and display the channel levels of the input and output boards of the entire audio network. The XCPU board forms the intelligent control center in every NEXUS base unit: here, the operating computer is connected to display level values and offer the user the possibility of changing all parameters and querying the status. The XCPU modules communicate with each other via the fiber optic network and exchange information on the status of the modules, control information and the central synchronization clock clock.

Management of the most complex networks without a single point of failure

A total failure of a NEXUS network cannot be caused, especially not by the failure of a single base unit, since each XCPU board knows the state of the entire system at all times. The burning process, which is part of commissioning, provides the control board with information about the number of NEXUS base devices, the cards they contain, and the intended network topology, so that discrepancies can be detected immediately. This means that in the event of a power failure, e.g. of a base unit's power supply, only the base unit and the associated I/Os are affected. Maintenance and operation can be performed from any point in the NEXUS network, since the XCPU modules continuously exchange the status information of the base units.

NEXUS / NEXUS Star Technical specifications

XCPU Technical specifications