AFJ VDH 30 Van Der Hoofden test system allows to determine the human exposure to radiation caused by luminaries into the frequency range from 20kHz to 10MHz. The measurement is based on IEC 62493 (IEC 34/116/CD:2008). Through different ways of coupling between luminaries and humans, a level of exposure of a person to electromagnetic fields can be derived. One part of the exposure is based on capacitive coupling between lighting equipment and person. This induces current densities that must be measured and evaluated using an EMI receiver and a Van Der Hoofden test head. The Van Der Hoofden test head consists of 3 elements: an electrically conductive sphere with a diameter of 210mm, a connection line of 300mm length and a protection network for the EMI receiver. The test head is equipped with M6 female thread. It can be mounted on an insulated mast system with height adjustment. The EMI receiver measures a voltage across 50 Ohm. It must be connected to the BNC connector of the mast clamp. To determine the compliance of a luminary to the standard the measured voltages must be converted into induced current densities. The measured densities must be expressed in relation to the allowed densities and they must be summed up. The result is a factor called F. A DUT is compliant if F does not exceed 0.85.
