Osvetlitev, ki jo proizvaja žaromet, se preveri z uporabo vertikalnega zaslona, ki ga je treba postaviti v oddaljenosti 25 m pred žarometom in pod pravim kotom na njegovo os (glej dodatka 1 in 2 k Prilogi V), in z etalonsko žarnico z nazivno napetostjo 12 V, ki mora imeti ima gladek balon iz brezbarvnega stekla, pri tej napetosti pa naslednje lastnosti:
The illumination produced by the headlamp shall be checked on a vertical screen set at a distance of 25 m in front of the headlamp and at right angles to its axis (see Appendices 1 and 2 to Annex V), and with a standard filament lamp designed for a nominal voltage of 12 V, having a smooth and colourless glass envelope and exhibiting the following characteristics at that voltage: