What I do not understand was the terminology. When I went to the site -reasons unknown, 1/2 the page was in German, and the rest of the project links were in German. I had to use Google-translate to get what I could.
I do have an oscilloscope that I am still learning how to operate. If the "Symmetrical frequency generator output (sFG)" signal is something that can show up as a pulse, then I can find it. If it was not a square wave pulse, then I probably did not recogonize it. Should signal output be a standard digital pulse, or are we talking about some analog sine-wave kind of thing?
The hexagon board has 5 pins, 2 pins are the motor power +12v or +24v I still can not confirm, I just run at +12. Ground pin. 3 other pins, 1 pin enables the motor to spin, 1 pin is the clock-pulse INPUT pin that controls the speed. The OTHER pin must be the mystery feedback signal that I will trace on the oscilloscope. I just realized now I should probably also spin it by hand to see what the scope reads as well. With a tachometer signal right off the motor driver itself, helps me a lot to synchronize the diode laser timing.