Discharge Forward Lighting System and Subsystems
This SAE Recommended Practice applies to motor vehicle forward illumination systems and subsystems generated by discharge sources. It provides test methods, requirements, and guidelines applicable to the special characteristics of gaseous discharge lighting devices which supplement those required for forward illumination systems using incandescent light sources. The document is applicable to both discharge forward lighting systems, subsystems and components. This document is intended to be a guide to standard practice and is subject to change to reflect additional experience and technical advances.
Section 2, updated references with revisions, titles and addresses (SAE, ANSI, CFR Title 49 Part 571, ASTM International, IES, UN Regulation 98 and 99, CIE).2.1.3, added Canada Motor Vehicle Safety Standard, CMVSS 108.
3.1, 3.3, 3.4, 3.10, 3.11, revised definitions for clarity.
Section 5, updated references of testing procedures to SAE J575 which were previously referenced to other documents.
5.1.1, replaced burning positon with nominal operating position.
5.1.3, 5.2.4, 5.4.3, revised to 20 minutes for consistency.
5.4.3, removed [Continuous Low Beam Mode].
5.1.5, 5.5, 5.7, 5.8, minor grammar updates.
5.2.1, 5.8.1, changed term to “nominal” for consistency.
5.4.1, changed normal to nominal.
Table 1, added light sources D5S, D6S, D7S, D8S, D8R, D9S and associated information. Revised format for legibility.
Table 3, modified values to reflect levels for 25 watt systems. 25 watt systems have lower steady state luminous flux values than 35 watt systems. The run-up characteristic is scaled to the total lumen values output – e.g., 3200 lumens/2000 lumens = 1.6. Therefore, the run-up values are scaled to the 1.6 value factor – e.g., 10000/1.6 = 6250.
Table 5, revised punctuation of decimal numbers.
Section 6, updated references of testing requirements to SAE J575 which were previously referenced to other documents.
6.1, removed wording; relocated to proper section (6.6).
6.6, revised wording for clarity (added words from previous 6.1). Changed incorrect section reference from 7.3 to 5.8.
7.3, removed as no specific guideline was given. This was listed for awareness and general background information.
7.7, this guideline removed as test for ultraviolet energy is covered in section 5.7. Other information was for background information when this technology was first introduced.
7.9, revised to include note about vehicle start/stop systems.
Section 7, renumbered to reflect changes made.
8.1, wording is revised to agree with new template (Marginal Indicia).
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