                    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         <s00100@dbnrhrz1.bitnet>
