NEXUS – RSYNC – The concept

RSYNC board is designed to synchronize a NEXUS network with various external systems. Since a NEXUS system can generally synchronize to any digital audio input, the RSYNC card is particularly useful if separate clock lines are used. The various synchronous inputs support video genlock, black burst, word clock and AES/EBU signals. With video sync, both bi-level and tri-level sync are automatically detected.

The AES/EBU connectors provide both 75 Ohm BNC sockets and 110 Ohm balanced lines accessible via D-Sub connectors. The card recognizes the occupancy automatically.

All connectors have switchable composite filters for noise suppression, and the incoming clock information can serve as a synchronous source for the entire NEXUS network. To ensure continuous operation even in the event of a source failure, a sync hierarchy can be created so that in the event of interruption or excessive inaccuracies of the current synchronous clock, the system fades over to the next available source.

If no other input is selected, the very accurate NEXUS internal clock generator is used. A key quality criterion in NEXUS networks is that external clock sources are always re-clocked by the internal clock generator, which gently fades over to the next clock in the event of a switchover or failure of a sync source, so that there are never dropouts or crackles in the audio.

In conjunction with a cleverly defined sync hierarchy, the board offers a wide range of connection options that ensure that the NEXUS system synchronizes itself to the current application, stabilizes this sync and passes it on to other systems.