# ZC - Zero Crossing

Tools
QST

This monitor calculates the true start of a spring compression.

Parameter | Description
--- | ---
Trigger Torque | Torque value from where the monitor starts. Must be < End Point Torque.
End Point Torque | Torque value for stop measuring. Must be > Trigger Torque.
Start Point Angle | Angle value from where the monitor starts. Must be < End point angle.
End Point Angle | Angle value for stop measuring. Must be > Start point angle.
Torque Rate Limit High | Maximum torque rate. Must be > Torque Rate Limit Low and < 999.
Torque Rate Limit Low | Minimum torque rate. Must be < 999 and < Torque Rate Limit High.