J. Kissel More experience with the SPI in the optics lab yields an explicit ADC / DAC channel usage list for the SPI pathfinder. I've uploaded it as a part of G2401479-v2, but attached here for convenience. This kind of critical info / easy look-up table should be a part of the Altium wiring diagram, D2400111, but sometimes given there saturation of information it's nice to just have a look-up table especially when building front-end models. Enjoy, future us!