Digital communication equipment environmental testing

Environmental testing of digital communication equipment can measure its adaptability in the environment, observe the adaptability and tolerance of products under various environmental conditions, eliminate early failures and improve product quality, and provide verification data and effective information for failure analysis.
Zhongke Testing Reliability Experiment Center has environmental testing capabilities for various digital communication equipment, and provides professional climatic environmental testing and mechanical environmental services for digital communication equipment.

1. Divided according to business type: telegraph, telephone, video conference, fax, data communication, etc.
2. According to the transmission medium, it is divided into: wireless communication and wired communication
3. According to signal type, it is divided into: analog communication and digital communication
4. According to the signal multiplexing method, it is divided into: frequency division multiplexing, time division multiplexing and code division multiplexing
5. According to whether the communicator is moving, it is divided into: fixed communication and mobile communication

1. The recommended test sequence is as follows:
Low temperature (storage, operation) test - high temperature (storage, operation) test - low air pressure (altitude) test - [temperature (altitude) test] - [temperature shock test] - [solar radiation test] - [rain test] - [immersion test] —[Sand and Dust Test]—Acceleration Test]—[Explosive Atmosphere Test]—Impact Test━Vibration Test━Alternating Humid Heat Test—[Mold Test]—[Salt Spray Test]—[Noise Test]—[Temperature, Humidity, Height Test].
Those with [] in the above sequence are tests with special requirements and can be omitted in the general equipment test sequence.
2. Severity level of single test
Temperature:
Low temperature: -55, -40, -25, -15, -5, +5℃.
High temperature: +40, +55, 60, +70℃.
Temperature change
Change rate: 5 ℃/min; 1, 5 ℃/s.
Humidity: Relative humidity 75%, 95%.
Air pressure: 106, 53, 20 kPa.
0 Air pressure change
1 Air pressure change rate: 0.1, 1.0 kPa.
2 Rain intensity: 1,2 mm/min.
3 Solar radiation (thermal effect) Intensity: 300, 700, 1 120 W/m
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GB/T 13543-1992 Environmental test method for digital communication equipment