The high temperature load test of the digital TV environmental test [high temperature test chamber] specific methods and requirements are as follows:
Requirement: When the sample temperature is 40 °C, it should be able to continue to work normally for 16 hours, and meet the following requirements. The final test items to be carried out after the initial test items and condition tests performed before the condition test are specified. The sample is evaluated for its appearance, mechanical structure, safety, and sample performance parameters such as electricity, sound, light, and color to evaluate the environmental suitability of the product. The sampling plan and the test result judgment categories are based on the general specifications of the corresponding products, the environmental test content and the non-conformity criteria according to the SJ/T11326 standard Appendix A
Test equipment: It should meet the requirements of Chapter 4 of GB/T2423.2.
Test method: 1. The sample should be in the state of not being packaged, not energized and in the normal working position (the power switch is placed in the on position, but the power plug is not connected to the power supply), and placed in the test chamber with room temperature, the sample should be exhausted. Probably placed in the center of the high temperature test chamber so that there is as much space as possible between any part of the sample and the tank wall; 2. The tank temperature rises at an average rate of 0.7 to 1 ° C / min (average every 5 min), Gradually warm up to 40 ± 2 ° C, when the sample reaches the temperature stability, turn on the power supply for 16 hours; 3, the sample is disconnected from the power supply, the box temperature is reduced to the normal test atmospheric conditions at an average rate of 0.7 ~ 1 ° C / min A certain upper limit; 4, using visual inspection and hand sensing. When carrying out the load test, the output power shall be 1/8 of the rated output power, and input by the program signal; 5. When forced air circulation is required, it shall be carried out according to the provisions of 10.7.1.2 of GB/T2423.2.
Note: “Working†in the above content refers to normal answering, watching, playing images and sounds.
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