Decoder board vs Galvo driver inputs for X/Y (solved)

[Arcygenical]

Hey all,

I have a decoder board that accepts both ILDA and Bluetooth input.
The board does very well controlling the colours of an RGB laser source.

My issue, though, is the board only has an [Y,N,X] output for galvo control.

All of my galvo drivers (this is just 1 example, I have 15kpps, 25kpps and 40kpps drivers) require [X,N,Xpos] | [Y,N,Ypos] type input.

Is there any way to interface these boards?

Thanks kindly!

EDIT1

I'm beginning to realize the ILDA standard is +/-5v for galvo control. I'm assuming the decoder board I have only sends a +5v signal, and not the +/-5v differential signal required via ILDA. Hmmm.

EDIT2 [solution]

I tied the grounds from both X and Y signals together, put the +5v from the decoder board into the X+ and Y+ inputs respectively. Originally I tried regulating the -15v source for the galvo control to -5, and tying the signals to that. Worked, but was horribly distorted.

At the end of the day, I left the X- and Y- floating. Probably awful practice, but the test image is working great.