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Internal handouts from Huawei Chief Hardware Engineer

2013-09-29
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Mobile phone static electricity test Standard static electricity test 1 Experimental conditions The test temperature is maintained at 25℃±2℃, the humidity is 30%RH -50%RH, and the test platform is used. [pic]2 The purpose of the test is to simulate whether the performance of the equipment will decrease or fail when it is subjected to electrostatic discharge, and whether the values of instantaneous voltage and instantaneous current will cause any harm to the human body. 3 The test standard refers to the electrostatic test specification, YD/T 1215 standard. Air discharge is a discharge through the air between the discharge electrode and the test object. Contact discharge (Contact Discharge) discharges through a high-voltage switch after the discharge electrode comes into contact with the object to be measured. The current of contact discharge is much larger than that of air discharge at the same voltage, which is more susceptible to damage to electronic devices. To make a call, set the module to automatically answer status (ATS0=1, AT&W), so that it can make the called call. Discharge test of ±AD and ±CD in call status, the test points and discharge voltage of call status discharge can refer to the following table: |Requirement |Contact discharge |Air discharge ||Vbat |±5kV |±10kV ||SIM port |±2kV |±4kV ||Antenna port |±5kV |±10kV ||GND |±5kV |±10kV ||RS-232 |±2kV |±4kV | |AUDIO……

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