Testing labs apply precise incremental inputs to the device across its entire operational span (e.g., 0%, 25%, 50%, 75%, and 100% of the scale). The resulting outputs are recorded during both increasing and decreasing cycles to check for alignment with the manufacturer's specified transfer function. 2. Hysteresis and Dead Band Assessment
The exact hardware revision, firmware build version, and calibrated span settings of the device. iec 612982