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Abstract. Currently, electromagnetic interference constitutes one of the major complications for a function of electronic or electrical devices. Because these devices are constantly exposed to effects of electromagnetic radiation, it is desirable to increase the electromagnetic immunity of device. One of the possibilities is to applicate the suitable shielding materials which can protect the device against the radiated electromagnetic emissions. This paper devotes to finding suitable materials for shielding security devices.

Due to the increasing susceptibility of electronic device, the importance of electromagnetic immunity to interference also increasing. The basic task of testing the electromagnetic susceptibility of electronic device on the harmful interference is comparison of the data obtained by testing with data which are required by the relevant standards for the device. When the electronic device does not have a sufficient immunity can occur a deterioration of its functionality, temporary failure or even a permanent damage to the device. The aim of this paper is perform the test of electromagnetic susceptibility for the electrostatic discharge at the keyboard of the alarm system. Immunity test will be performed according to instructions in the standards of electromagnetic compatibility.

Operation of electrical and electronic systems can be disturbed by the influence of natural or artificially generated electromagnetic pulses (EMP). In this connection for many years people successfully developed means for generating the power EMP also in the form of weapon systems. Potential targets can be the important elements of critical infrastructure, military systems or transport vehicles, for example if necessary stopping the moving vehicle, as well as vehicles, which penetrated to vicinity of the protected object or stopping of vehicles at control posts. Streszczenie. Praca systemów elektrycznych I elektronicznych może być zakłócana przez generowane impulsy elektromagnetyczne. Takie impulsy mogą też służyć jako broń przeciw systemom militarnym w tym także pojazdom. Możliwości zatrzymania ruchu pojazdu za pomocą impulsów elektromagnetycznych