NEXUS System

Operation

NEXUS Base Devices and fibre-optic transmitters use digital Time Division Multiplex (TDM) technology. Every Base Device features an audio bus with 256 time slots and can therefore process 256 different signals at the same time. The time slots can be dynamically assigned in order to increase the number of possible simultaneous routing processes in large networked systems.
The I/O boards convert input signals to the internal data format and assign the resultant data to time slots, or read and convert them for output, respectively. Multiple boards can read and use the same signal at the same time.
The XFOC fibre-optic interface boards bundle the 256 signals to transfer them to other Base Devices over optical lines.
The XCPU Base Device controller board controls and monitors all functions (including TDM handling and synchronisation) and all boards. The controller board also handles the control information on the audio network and the routing system. It communicates to the user-interface computer and — via optical lines — to the other Base Devices on the network.