ColorSource Spot flashing to full on no DMX

An odd thing happened today when I powered up the rig which I clearly didn't pay enough attention to at the time. The 12 ColourSource Spots on our upper circle rail all came on at level and stayed there until I had powered powered up the nodes that provide DMX to them. Rig check was fine, but we had a rehearsal this afternoon and on a number of occasions lamps randomly flashed up. When I investigated each of the units was showing P:01 on the displays, which are usually blank when powered up and receiving DMX. When I unplugged the DMX input to check settings with my DMXcat the lamps again went to level. I managed to reset the units by actively selecting preset 1 with UP > DOWN > MODE which change the behaviour so that they now go out when DMX is removed rather than flashing up. Presumably two problems at once, dodgy DMX, and some weird random mode change. I couldn't find any obvious signs of problems with the DMX runs, but power cycled the nodes and splitters just to be on the same side and wiggled all connections. Not enough time to run a fresh DMX today so that will go in tomorrow, but does anyone have any thoughts on why the spots might have powered up in this odd mode? Would it also not be better if loss of DMX left the unit in its current state?

tt2

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  • They were working normally on Saturday when the rig was powered down, and I powered up today at about 11. We don't have anything configured for RDM programming connected to the network. Control is an Ion XE (master) and a Gio @5 (client). There are a number of nodes and about 8 DMX universes. The network is standalone for lighting control but we do have a wireless access point so we can connect iRFR.

    tt2 

  • FWIW the units are running firmware 1.7.0.9.0.21 and have been in place for just over a year. Had one die dead as a dodo on Saturday which is probably a coincidence and unrelated to this issue, but one can't be sure. The unit we swapped in behaved normally and there were no other signs of problems on Saturday.

    tt2

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