The DMX cable connection inside the FiberSource CMY 150 has been modified for easier servicing as of S/N 4222980001. The combined input/output cable now connects to a connecting block - with screw terminals - mounted to the chassis. (Earlier units have a spring-loaded connecting block mounted directly on the PCB.)

The leads from the new connecting block to the PCB are as follows: Red = Cold, Black = Hot, and Blue = Ground.

The leads on the included DMX cable are still coded as follows: Green and Brown = Cold, White = Hot, and Screen = Ground. Note that the color code may be different on other cables.