Document ID: chunk:federal_register_of_legislation:F2021C00466:body:0:p7
Version: federal_register_of_legislation:F2021C00466
Segment Type: other
Provision Reference: 
Character Range: 18360–21430

defined in the diagrams in Annex 3 to this Regulation, the intensity of the light emitted by each of the two samples shall:
7.2.1.                              In each direction corresponding to the points in the luminous intensity distribution table reproduced in Annex 4 to this Regulation be not less than the value shown in the said table for the direction in question, expressed as a percentage of the minimum specified in paragraph 7.1. above;
7.2.2.                              In any direction within the space from which the light in question is visible, not exceed the maximum specified in paragraph 7.1.above;
7.2.3.                              However, a luminous intensity of 60 cd shall be permitted for parking lamps directed to the rear incorporated with stop lamps (see paragraph 7.1.2. above) below a plane forming an angle of 5° with and downward from the horizontal plane;
7.2.4.                              Moreover,
7.2.4.1.                        Throughout the fields defined in Annex 3 the intensity of the light emitted shall be not less than 0.05 cd,
7.2.4.2.                        The requirements of paragraph 2.2. of Annex 4 on local variations of intensity shall be observed.
7.3.                                    Annex 4 to this Regulation to which reference is made in paragraph 7.2.1. above, gives particulars of the methods of measurement to be used.
8.                                          Test procedure
8.1.                                    All measurements, photometric and colorimetric shall be carried out with an uncoloured or coloured standard light source of the category prescribed for the device, supplied with the voltage;
             (a) In the case of filament lamps, that is necessary to produce the reference luminous flux required for that category of filament lamp;
             (b) In the case of LED light sources of 6.75 V or 13.5 V; the luminous flux value produced shall be corrected. The correction factor is the ratio between the objective luminous flux and the mean value of the luminous flux found at the voltage applied;
             (c) In the case of lamps with non-replaceable light sources: 6.75 V and 13.5 V respectively;
             (d) In the case of a system that uses an electronic light source control gear being part of the lamp[4] applying at the input terminals of the lamp the voltage declared by the manufacturer or, if not indicated, 6.75 V, 13.5 V or 28.0 V, respectively;
             (e) In the case of a system that uses an electronic light source control gear not being part of the lamp, the voltage declared by the manufacturer shall be applied to the input terminals of the lamp.
8.2.                                    The test laboratory shall require from the manufacturer the light source control gear needed to supply the light source and the applicable functions.
8.3.                                    The voltage to be applied to the lamp shall be noted in the communication form in Annex 1 to this Regulation.
8.4.                                    The limits