SAE J575 PDF
SAE J Test Methods and Equipment for Lighting Devices for Use on Vehicles Less than mm in Overall Width. 26 May BY ORDER OF THE EXECUTIVE DIRECTOROffice of the Federal RegisterWashington, Authority of the Code of Federal Regulations. Document Name: SAE J Test for Motor Vehicle Lighting Devices and Components CFR Section(s): 49 CFR S Standards Body: Society for.
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All sample devices may be tested only to the Water Spray Test 4. This test is not intended to provide a com- plete test on the device seals and excludes drain holes see Moisture Test 4. Devices which have a portion completely protected in service such as trunk mounted lamps shall have that part of the device covered to prevent moisture entry during the test.
SAE J575: Test for Motor Vehicle Lighting Devices and Components
Dae other device openings shall re- main open. The test dust shall be agitated as completely as possible by com- pressed air or blower s at intervals of 15 min for a s period.
Where special bulbs are used, they shall be operated at their rated luminous flux output. The internal chamber volume, not including a “hopper shaped” lower section, shall be j755 m 3 maximum and shall be charged with kg of the test dust 4. The luminous intensity measurements in candela shall be recorded for each of the test points and areas specified for the j755 of the sample device being tested. If the device does not comply with the water submersion requirements of ssae.
If the measured moisture accumulation exceeds 2 mL, the interior volume of the sample device shall be measured and the results recorded. Unless otherwise specified, photometric measurements shall be made with the bulb s steadily burn- ing. For example, to read a test point 5U-V, the goniometer should tilt the aim of the device 5 deg in wae downward direction.
Full text of ” SAE J It should be noted that when rotating the sample device on a goniometer, it is necessary to move the aim of the device from the H-V point in the opposite direction of the test point being measured. The purpose of the Water Submer- sion Test 4.
Standard Observer 2 deg Photopic Response Curve. Cracking or rupture of parts of the device affecting its mounting shall also constitute a failure. A device using a bulb with a major and minor light source may be oriented with respect to sse major light source.
A similar reversal applies to the down Dleft Land right R test points. The purpose of the alternate Water Submersion Test 4.
For devices with an interior volume greater than mL, the maximum allowable moisture accumulation in the test device shall be 0. If a standing pool of water has formed, or can be formed by tapping or tilting the device, the accumulated moisture shall be extracted, measured, and the results recorded.
If warpage is observed that could result in failure of other tests contained in Section 4 of this technical report, the test s shall be performed on the warpage test sample and the results recorded.
This angular direction is defined as follows: This test is not intended to provide a complete test on the device seal. The vibration machine output wave form shall be sinusoidal with a maximum permissible harmonic distortion as shown in Fig. Note; Devices with multiple function combinations shall be tested with all functions simulta- neously operating as specified, except for backup functions.
The moisture test is not required for sealed beam units. They shall be selected for accuracy as specified in SAE J and shall be operated at their rated luminous flux output.
The sensor effective area is defined as the sas area of intercepted light striking the detector surface of the photometer. The vertical axis of the goniometer in Fig.
The bottom of the chamber may be “hopper shaped” to aid in collecting the dust. Devices which comply with the water submersion requirements of 4.
I575 Dust Test 4. Society for Automotive Engineering The dust shall be allowed to settle between the agitation periods. For sensor systems with lens es that change the diameter of the intercepted light beam before it reaches the actual detector surface, the maximum size requirements shall apply to the total area of the light actually k575 by the lens surface, The sensor shall be capable of intercepting all direct illumination from the largest illuminated dimen- sions of the sample device at the test distance.
If the device j755 not comply with the requirements of 4. An initial photometric measure- ment may be made prior to the dust exposure in 4. This device with the test sample installed shall not have a resonant fre- quency in the Hz range.
Scope — This technical report provides standardized laboratory tests, test methods, and requirements applicable to many of the lighting devices and components covered by SAE technical reports. The height of the collector shall be mm and the inside diameter shall be sar minimum of mm. The following nomenclature shall also apply; The letters “V” and “H” desig- nate the vertical and horizontal planes intersecting both the device light source or center of a reflex reflector and the photometer axis.
All sample devices may be tested only to the Dust Exposure Test 4. Where special bulbs are specified, they shall be submitted with the sample devices and the same or similar bulbs shall be used in the tests.
Full text of “SAE J Test for Motor Vehicle Lighting Devices and Components”
The dust test is not required for sealed beam units. Drain wicks, when used, shall be tested in the device. If dust is found, the exterior optical surfaces of the device shall be cleaned and the maximum luminous intensity photo- xae measured anid recorded.
A device which has a portion completely protected in service such as trunk mounted lamps shall have that portion of the device covered to prevent dust entry during the dust exposure. The completion of the tests may be expedited by performing the tests simultaneously on sepa- rately mbUrtted samples. If any of the above changes are observed that could result in failure of other tests contained in Section 4 of this technical saae, the test s shall be performed on the vibration test sample and the results recorded.
If a portion of the device is completely protected in service such as trunk mounted lampsthat portion shall be covered to prevent salt fog entry during the salt exposure. The vibrator table shall be of sufficient size to completely contain the test fixture base with no overhang.
Precautions shall be taken to minimize the introduction of extraneous responses in the test setup.