Sensor Saturation Effects on NLTS Measurements

The effects of sensor saturation on measure- ments of nonlinear transition shift(NLTS) are compared for the harmonic elimination and extracted dibit methods. The error in the fifth harmonic method is sensitive to the normalized pulse width and to the amount of saturation; the NLTS measured by this technique underestimates the actual NLTS value, and the reduction can be more than 30% for reasonable values of PWm T and sensor extracted dibit method is relatively insensitive to the amount of saturation, with errors typically less than 5%. Index teims - nonlinear transition shift, saturation, magnetoresistive sensor, extracted dipulse saturation. The NLTS calculated from t I( e €1 echo in the