[SML] Lightronics xc 40

[Dale Farmer]

On 8/2/2015 11:04 PM, Matthew Whiton via Stagecraft wrote:
> Hello all,
>
>        I'm using a rented Lightronics xc 40 4 channel dimmer pack. Each
> channel is powering a 3amp 12v power supply which in turn powers between
> 5-10 ft of LED tape at 4.8 watts per meter. The channels are all doing
> an (unwanted) repetitious flash more or less in sequence even when no
> power it applied to the channel. The CnFG is set for 5 pin dmx, so I'm
> not running chase sequence. I've changed the Dimmer curves to LED1 and
> LED 2, that didn't help. The manual doesn't say that I need a DMX
> terminator. (should it?)
> There's no pulsing of the lights when the channels are up on the board.
>
> Many Thanks in advance for any suggestions you may have.
>
> Matt
>
> Matthew Whiton
> Production Manager
> Lyric Stage Company of Boston
>
>
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Try sticking a dummy load on the output of the dimmer in addition to the 
LED power supply.  Shouldn't need to be much, maybe a 25 watt lamp. 
Some dimmers get wonky when the load of the channel is very small.

Consider a LED driver that is directly DMX controllable rather than 
indirectly controlling the LED driver via the dimmer powering it.

   --Dale