NEXUS – RCX – The concept:

The RCX card is the central board of every NEXUS Star Router. It takes over the control and monitoring of all modules in it. Up to 16 I/O modules can be equipped per Star Router, 256 audio channels of which are exchanged with the RCX module. An audio matrix of 4,096 inputs to 4,096 outputs is implemented on the board for this purpose.

Similar to the XCPU boards for NEXUS base devices, the RCX router board also contains the NEXUS Logic Control responsible for this base device and is informed at all times about the overall status of the entire NEXUS system. For external control access, the card has two RS232/RS422 ports on the front panel, a USB port and an Ethernet interface. A computer with the NEXUS "Matrix 5" operating program or other control systems can be connected here.

It is possible to connect several controllers, also distributed on different routers and base devices, as well as a word clock input and an output at the front. In addition to this sync function, the Star Router can of course synchronize with the NEXUS system clock or generate it itself on the RCX card. In the unlikely event of an RCX board failure, a second board can be redundantly equipped. A simple push of a button on the front panel is all it takes to activate the switchover. There is no noise during switching, as the audio output is automatically muted for a short time.