Previously the only way to trigger the ROSA system way via OSC. However, this made the ROSA system less approachable for small shows as they may not have the infastructure to do so. This module converts a DMX signal to an OSC trigger allowing the system to be triggered from any DMX capable lighting desk.
As the name suggests, the DMX input module takes a DMX line out of the desk, and when triggered sends an OSC cue to the ROSA system’s server, triggering the system just like any other OSC capable software. This means that it can be used in conjunction with triggers from other sources or used as the sole input for the system.
The way that it works operationally is that it listens on two DMX channels. The first channel acts as a safety, meaning that the ROSA system will stop all operation and will not acknowledge any new cues unless it is set to 75%. the second channel acts as a cue number. For example, if channel 2 is at a value between 1 and 10, it will fire cue 1, 11 to 20 is cue 2 etc. These intervals can be as small as 1% (giving a potential 100 cues) or as large as required.
As a side note this module also has a non-ROSA use as an OSC trigger. The OSC strings it fires can be completely customised such that you could trigger other programmes from any lighting desk which outputs DMX.
Ethan Kent Lighting Design 