The Foot Splash Sensitivity adjusts how sensitive the hihat pedal is when you're stepping on it to perform pedal "chick" and splash sounds.
A higher value will make the triggering more sensitive. A lower value will make the triggering less sensitive. Here's how to adjust it:
1. Press the TRIGGER button.
2. Press the PAGE UP button to choose PAGE 1.
3. Press the F4 button to select the HI-HAT tab.
4. Press the cursor down button to highlight the Foot Splash Sens value.
5. Turn the dial to adjust the sensitivity (-10 - +10).
6. Press the EXIT button when you're finished. The new settings are saved automatically.