The RFS-R 3-2 is a passive near-field probe. The H-field probe is designed to be used very close to the components and where high magnetic field strength occurs. It has a current attenuating sheath and, therefore, is electrically shielded. The magnetic field scanner probe can be connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. The H-field probe does not have an internal terminating resistance of 50 Ω.