Swedish Recommendations for VDUs ================================ MPR-I TCO'89 MPR-II TCO'91 Coordinate system sphere sphere cylinder cylinder Distance 30 cm 30 cm 50 cm 30 cm X ray 5000 nGy/h 5000 nGy/h 5000 nGy/h 5000 nGy/h Electro-static +/- 500 V +/- 500 V +/- 500 V +/- 500 V field (equivalent surface potential) Dynamic electric field Band I (5 Hz.. 2 kHz) --- --- 25 V/m (RMS) 10 V/m (RMS) Band II (2 kHz..400 kHz) --- --- 2.5 V/m (RMS) 1 V/m (RMS) Dynamic magnetic field Band I (5 Hz.. 2 kHz) --- --- 250 nT (RMS) 250 nT (RMS) Band II (2 kHz..400 kHz)50 nT (P-P) ---25 nT (RMS)25 nT (RMS) 25 mT/s (P-P) 10 mT/s (P-P) ----------------------------------------------------------------------------- (P-P) peak-to-peak (RMS) effective value MPR-I : Testing visual display units -- test methods. Statens maet och provraad, MPR 1987:2, 1987-05-15. (These are known as *the Swedish guidelines*) MPR-II: Test methods for visual display units. Statens maet och provraad, MPR 1990:8, 1990-12-01. (Update to MPR-I). TCO'89: Alternative suggestions by Swedish Trade Unions, 1989. TCO'91: Update to TCO'89. Quoted according to c't 7/91, Hannover, Germany. No guarantees of correctness, fitness for any particular purpose, etc \Gisbert