I. Introduction
Our society is faced with an increasing dependence on computer networks, wireless communication and microelec-tronics. Even safety critical systems are more and more based on networked electronic devices reducing non-electronic redundancies at the same time. This development makes our society vulnerable against intentional electromagnetic interference (IEMI) or in other words against attacks with High-Power Electromagnetics (HPEM) sources [1], [2]. In the past efforts have been made to investigate the susceptibility of mainly single electronic parts and components against such threats [3] but susceptibility tests of whole (networked) IT systems happened rather rarely. Even in classical Electromagnetic Compatibility (EMC) testing the equipment is usually not in its later application environment. Experience in EMC taught that combining EMC proofed components does not guarantee an EMC proof system. This is of course true as well for HPEM threats. The coupling through connecting cables is a main path for transferring electromagnetic energy into the target system. Also integrating electronic components into racks or chassis may enhance the susceptibility of the whole system because of resonance effects.