FUTABA T32MZ Instruction Manual page 76

This is used for testing servo movement. Touch "Moving
mode) depending on which one shows on the screen. To
and you will move from "Moving Test" to "Neutral Test"
position.
＜ Linkage Menu ＞
76
Servo Test & Graph Display/Displays servo
positions.
the neutral position of a servo horn.
■ Inadvertent rotation of the motor or acceleration of the
Don't set a servo test mode when the drive
motor is connected and the engine was started.