| 摘要 |
PROBLEM TO BE SOLVED: To simply, easily and accurately execute measuring works such as inspections for countermeasures to electromagnetic troubles, etc., by providing a small magnetic field sensing loop coil, etc., on a sheet-like board and a peelable adhesive surface on the board back side. SOLUTION: This is a near magnetic field probe P for measuring electromagnetic noises and identifying the electromagnetic noise sources for inspecting the electromagnetic compatibility(EMC) regulation measures or inspections for electromagnetic interference countermeasures. On a sheet-like flexible board a small magnetic field sensing loop coil, a coplanar transmission line and high frequency connector are provided with a peelable adhesive surface provided on the board back side. On a printed wiring board 9 to be evaluated many harnesses 10, connectors, etc., and other components are disposed in a complicated manner, the probe P is inserted at a specified position by avoiding them and adhered or fixed to measure a high frequency noise current, i.e., a measuring unit 8 measures the high frequency induced electromotive force sensed by the loop coil, through a coaxial cable 6.
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