METHOD AND DEVICE FOR MEASURING IMPEDANCE

摘要

PROBLEM TO BE SOLVED: To provide an impedance measuring method for measuring the impedance of a large number of circuit boards in a short time with excellent accuracy. SOLUTION: The end face 61 of a circuit board 3 is set at a predetermined position. After a probe A is moved so as to face the end face 61 of the circuit board 3, the probe A is brought into contact with a test pattern 62 exposed to the end face 61 of the circuit board 3. The impedance of the test pattern 62 is measured by a measuring instrument connected to the probe A. The probe A can be easily brought into contact with the very small test pattern 62 exposed to the end face 61 of the circuit board 3, and the impedance can be easily measured.