Can I connect the ground wire to the DMX LED Dimmer input ground?

I am wanting to try using this LED dimmer controller for one of my light fixtures. The light fixture I have has two wires: (the PWM control wire and the ground wire). Would it be okay if I connect the ground wire to the DMX input ground?

Our DMX decoder is not designed to be compatible with residential or commercial lighting fixtures. As such, it does produce any PWM-based dimming signals. It sounds like your LED controller is not DMX compatible and would not be a good fit here.

The lighting fixture that I am trying to control is described here: This lighting fixture has 3 wires and is controlled by PWM:

Wire1: 850nm, Wire2: 940 nm, Wire3: ground

Regarding the DMX decoder, I tried measuring the output but I didn’t see any changes on the oscilloscope. I tried measuring the PWM from 5/W2, 4/W1, 3/B-, 2/G-, and 1/R-. 

In addition, I tried changing the settings manually such as PF01 to PF30, and 1-00 to 1-99…etc but didn’t notice any changes in the output.

I think I should be able to see PWM. Am I measuring the output incorrectly? What is the correct way to measure the signal from this device?

Unfortunately, we weren't able to see any technical information on the PWM input requirements so I'm not sure if I can provide any further assistance here concerning this product. If the manufacturer has some additional datasheets or information they can provide, that may be helpful for us to better determine this.

For example, see below for the Meanwell HLG power supply, which provides detail on the 10-volt PWM input requirements (middle chart, page 4):

https://www.meanwell.com/Upload/PDF/HLG-240H/HLG-240H-SPEC.PDF

We do suspect that the CMVision product has some special requirements for dimming and the manufacturer may be better equipped to provide assistance with the necessary accessories and components.

​Otherwise, we suspect that our DMX decoder product is not compatible with the CMVision product you have linked to, and do apologize for the inconvenience. 

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