The Reference Value For The Calibration Of The R-Axis Offset on Samsung SM321 Real Max(Min): Max(Min) error between command value and measured value Head1~Head6 : -0.500 ~ 0.500(deg) Err Max(Min) : Max(Min) error between measured value and compensated value Head1~Head6 : -0.200 ~ 0.200(deg) Watch “Server Assembly Comprehensive” on YouTube Head Assembly – B of Required Materials for Head Module on Samsung SM321