The S2 set contains active and passive magnetic field probes. They measure the nonreactive fast transient pulse magnetic fields in electronic devices and assemblies under interference. Burst and ESD processes, which cause problems in the device under test, can be analyzed. The magnetic field probes transmit the measured signals via the LWL connection to the optical receiver of the SGZ 21. The S2 set can only be operated with the SGZ 21 burst generator included in the E1 set.