Test voltage. The voltage shall be applied to the terminals of the test sample as follows:
(a) In case of replaceable filament light source( s) operated directly under vehicle voltage system conditions: the test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable, except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used.
(b) In case of replaceable gas discharge light source(s): The test voltage for the electronic light source control-gear is 13.2 + 0.1 volts for 12 V vehicle voltage system, or otherwise specified in the application for approval.
(c) In the case of non-replaceable light source operated directly under vehicle voltage system conditions: All measurements on lighting units equipped with nonreplaceable light sources (filament light sources and/or others) shall be made at 6.3V, 13.2V or 28.0 V or at other voltages according to the vehicle voltage system as specified by the applicant respectively.
(d) In the case of light sources, replaceable or non-replaceable, being operated independently from vehicle supply voltage and fully controlled by the system, or, in the case of light sources supplied by a supply and operating device, the test voltages as specified above shall be applied to the input terminals of that device. The test laboratory may require from the manufacturer the supply and operating device or a special power supply needed to supply the light source(s).
(e) LED module(s) shall be measured at 6.3V, 13.2V or 28 V respectively, if not otherwise specified within this Regulation. LED module(s) operated by an electronic light source control gear, shall be measured as specified by the applicant.
(f) Where signalling lamps are grouped, combined or reciprocally incorporated into the test sample and operating at voltages other than the nominal rated voltages of 6 V, 12 V or 24 V respectively, the voltage shall be adjusted as declared by the manufacturer for the correct photometric functioning of that lamp.
Test voltage. The voltage shall be adjusted so as to supply 90 per cent of the maximum wattage specified in Regulation No. 37 for the filament lamp(s) used. The applied wattage shall in all cases comply with the corresponding value of a filament lamp of 12 V rated voltage, except if the applicant for approval specifies that the headlamp may be used at a different voltage. In the latter case, the test shall be carried out with the filament lamp whose wattage is the highest that can be used.
Test voltage. The voltage shall be adjusted so as to supply a wattage 15 per cent (26 per cent for 24 V types) higher than the rated wattage specified in this Regulation for the type(s) of SB headlamp(s) concerned is (are) obtained.
Test voltage. The voltage shall be applied to the terminals of the test sample as follows:
(a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used;
(b) In case of replaceable gas discharge light source(s): the test voltage for the electronic light source control-gear is 13.2 ± 0.1 volts for 12 V vehicle voltage systems, or otherwise specified in the application for approval;
Test voltage. (a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The voltage shall be adjusted so as to supply 90 per cent of the maximum wattage specified in Regulation No. 37 for the filament light source(s) used. The applied wattage shall in all cases comply with the corresponding value of a filament light source of 12 V rated voltage, except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source whose wattage is the highest that can be used.
(b) In case of replaceable gas discharge light source(s): The test voltage for the electronic light source control-gear is 13.5 ± 0.1 volts for 12 V vehicle voltage system, or otherwise specified in the application for approval.
(c) In the case of non-replaceable light source operated directly under vehicle voltage system conditions: All measurements on lighting units equipped with non- replaceable light sources (filament light sources and/or others) shall be made at 6.75 V, 13.5 V or 28.0 V or at other voltages according to the vehicle voltage system as specified by the applicant respectively.
(d) In the case of light sources, replaceable or non-replaceable, being operated independently from vehicle supply voltage and fully controlled by the system, or, in the case of light sources supplied by a supply and operating device, the test voltages as specified above shall be applied to the input terminals of that device. The test laboratory may require from the manufacturer the supply and operating device or a special power supply needed to supply the light source(s).
Test voltage. The voltage shall be adjusted so as to supply 90 per cent of the maximum wattage specified for filament lamps category HS1 in Regulation No. 37.
Test voltage. In the case of a Class B, C and D headlamp, the voltage shall be adjusted so as to supply 90 per cent of the maximum wattage specified in Regulation No. 37 for the filament lamp(s) used. The applied wattage shall in all cases comply with the corresponding value of a filament lamp of 12 V rated voltage, except if the applicant for approval specifies that the headlamp may be used at a different voltage. In the case of a Class E headlamp, the test voltage for the ballast is 13.5 ± 0.1 Volts for 12 V network system, or otherwise specified in the application for approval. If there are reciprocally incorporated filament lamps, the voltage producing the reference flux shall be used.
Test voltage. The voltage shall be applied to the terminals of the test sample as follows:
(a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used;
(b) In case of replaceable gas discharge light source(s): the test voltage for the electronic light source control-gear is 13.2 ± 0.1 volts for 12 V vehicle voltage system, or otherwise specified in the application for approval;
(c) In the case of non-replaceable light source operated directly under vehicle voltage system conditions: all measurements on lighting units equipped with non-replaceable light sources (filament light 2 Should two or more lamp filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filaments simultaneously.
Test voltage. The voltage shall be applied to the terminals of the test sample as follows:
(a) In case of replaceable filament light source(s) operated directly under vehicle voltage system conditions: The test shall be performed at 6.3 V, 13.2 V or 28.0 V as applicable except if the applicant specifies that the test sample may be used at a different voltage. In this case, the test shall be carried out with the filament light source operated at the highest voltage that can be used; 2 Should two or more lamp filaments be simultaneously lit when headlamp flashing is used, this shall not be considered as being normal use of the filaments simultaneously.
Test voltage. The voltage shall be adjusted so as to supply 90 per cent of the maximum wattage specified in this Regulation for the type(s) of HSB headlamp(s) concerned is (are) obtained.
