In order to compare or calibrate instruments, a standard is needed. JIS Z 2316-2 as a standard defines 18 characteristics of instruments and measurement methods for the eddy current testing. We made a process document and an automatic measurement system for calibrating eddy current instruments, and tested the effectiveness of this system through experiment. This paper explains the standard and automation of the measurements of the standard. First, the characteristics and measurement methods used in the standard are discussed. Users of this standard need to select proper characteristics in many characteristics for each purpose in accordance to goals. We tried to explain how to select proper characteristics. Second, the results measured by the system are discussed. We measured characteristics of a lock-in amplifier, in comparison with that of other settings of the amplifier using the system. The results rightly show characteristics. It is hoped that the automation will help in measuring characteristics and compare of the eddy current instruments.
