DIFFERENTIAL WIRING INSPECTION METHOD FOR PRINTED CIRCUIT BOARD, DIFFERENTIAL WIRING INSPECTION PROGRAM, AND DIFFERENTIAL WIRING INSPECTION DEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a differential wiring inspection method capable of reducing limitation on wiring design, and capable of precluding an emission noise from increasing. PSOLUTION: This differential wiring inspection method of the present invention is provided with a step for calculating a wiring length difference between a positive signal line and a negative signal line of differential wiring provided on a printed circuit board, and a step for comparing the calculated wiring length difference with an allowable wiring length difference determined based on a frequency of a signal transmitted to the differential wiring, so as to determine the quality of the wiring. PCOPYRIGHT: (C)2006,JPO&NCIPI