Verify that the expression pedal auto calibration is set to ON in the System Menu > UTILS > PDLCAL > ON. If it’s ON already, turn it off then back on again. Plug your TRS cable to the expression pedal first, then to the H9 EXP input. Move the expression pedal back and forth. You should see the value go from 0 to 100. That’s how you know the pedal is calibrated.
