The purpose of the test is to check the accelerated aging performance of the cable on the projectile, evaluating its performance by testing at a temperature of 90 ° C +/- 2 ° C with a holding time of 168 hours. The test equipment includes a test chamber capable of maintaining the specified temperature, and the diameter of the test rod should be 4 to 5 times the diameter of the specimen. Specimen preparation includes the use of inspection-qualified cable assemblies manufactured according to the design drawings and technical conditions, or the use of a specimen with a length of 600mm, in which the Shielding layer should be stripped, the surface should not be mechanically damaged, and the insulating layer at both ends should be stripped 25mm each. The test procedure includes the appearance inspection and electrical performance inspection of the sample, and the sample is placed on the test rod and placed in the test chamber for testing to ensure that the sample is not in contact with the box wall.