FUTABA 16SZ Instruction Manual page 156

The hovering pitch, low pitch, and high pitch trim setup screen can be called from the Pitch curve setup
screen.
Hovering pitch trim
The Hovering Pitch trim function trims the pitch
near the hovering point. Normally, it is used with
the hovering condition. The hovering pitch can be
conditions. Adjust the hovering pitch so that
rotor speed is constant. This function can be used
together with the hovering Throttle Trim function
for more delicate operation.
Setting method
Hovering pitch trim Low/high pitch trim
setting setting
High Pitch/Low Pitch Trim
High Pitch/Low Pitch Trim is the pitch servo
high side and low side trim function.
Setting method
＜ Model Menu (Helicopter Functions) ＞ 157