5.7.2.1 Lower limit of working temperature
According to GB/T 2423.1 "Test Ad". The sample must undergo initial testing. The severity level shall be taken as the lower limit value of the working temperature specified in Table 1, and the test program shall be powered on for 2 hours. The test sample shall operate normally. The recovery time is 2 hours
5.7.2.2 Lower limit of storage and transportation temperature
According to GB/T 2423.1 "Test Ab". The severity level is taken as the lower limit of storage and transportation temperature specified in Table 1, and the dropped sample is stored for 16 hours under non working conditions. The recovery time is 2 hours and post testing is performed To prevent frost and condensation on the test sample during the experiment, it is allowed to seal the test sample with polyethylene film before conducting the experiment. If necessary, moisture absorbent can also be installed inside the sealing sleeve
5.7.3 Temperature Upper Limit Test
5.7.3.1 Working Temperature Upper Limit
Perform according to GB/T 2423.2 "Test Bd". The sample must undergo initial testing. The severity level is taken as the upper limit of the working temperature specified in Table 1. Power on and run the inspection program for 2 hours, and the test sample should work normally. The recovery time is 2 hours and post testing is performed
5.7.3.2 Upper limit of storage and transportation temperature
According to GB/T 2423.2 "Test Bb". The severity level is taken as the upper limit of storage and transportation temperature specified in Table 1, and the test sample is stored for 16 hours under non working conditions. The recovery time is 2 hours, and post testing is performed
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