Hardware not interfacing with pc

Kits PC Related Projects
1

I have recently purchased this K8062 interface kit, and have the following symptoms when attempting to use:

  1. When connected to the PC, the interface powers up correctly, with the Power LED illuminated and the DMX light off.
  2. When I load the supplied DMX control software (which doesnt seem to be very good at supporting any lights), the DMX light flashes continuously, and does not “go steady” at any point. I experience the same symptom when I load “FreeStyler” software.
    When I exit said software, the DMX light then goes steady, and stays on, but starts flashing again as soon as I reload the software. None of the fixtures respond to any DMX commands sent via the interface regardless of software used
  3. When running in standalone “test” mode, none of the fixtures respond.
  4. The fixtures all work fine off my Stairville DMX lighting desk controller, and also when using our Zero88 Fat Frog lighting desk.

The fixtures I’m using are : Stairville MH-250’s, Robe Colorspot 250XT’s, and a Robe Colorspot 575XT. I’ve also tried using it with a Mojo Spinmaster and standard Par 64 Par Cans. Can you please advise what may be the problem? As I’ve said, the PC detects and recognises the interface as a USB Human Interface Device, but nothing appears to work on the DMX side of the equation. All the wiring seems correct (both myself and a colleague have checked the wiring) and there appear to be no problems with the solder joints, however any help you can give would be most appreciated.

2

The operation of the unit seems to be OK. The DMX LED flashing indicates that there is communication between the PC software and the K8062 unit.
The problem seems to be at the XLR connector or in the wiring between the connector and the board.
If you can check that the signal is coming out from the pins 6 and 7 of IC1. Check that the signals are output from the XLR connector pins 2 and 3 and the ground is connected to pin number 1.
Some light devices have connectors with reversed polarity on pins 2 and 3. In that case you have to swap the wires between pins 2 and 3.