What are the tests for the data cable? What is the test standard?

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    Electronic products are being updated day by day, and various new products are released every day. So what test standards are there to check whether the quality of the usb cable is qualified? The editor has compiled the following usb line test items and acceptance standards for your reference.

    1. Contact resistance
    2. Charging performance
    3. Data Transmission
    4. Free fall
    5. Tension test
    6. Bending and swing test
    7. Plug life test
    8. High temperature test
    9. Low temperature test
    10. ESD discharge test
    11. Constant heat and humidity test
    12. Salt spray test
    13. Detection of toxic and hazardous substances

    1.contact resistance

    Inspection method: Measure the impedance after matching the data cable with its matching plug
    Acceptance criteria: the impedance of each PIN pin is less than the specification requirements
    Testing equipment: multimeter

    2.Charging performance

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    Inspection method: Whether it is normal to use the power supply to charge when the machine is turned on and off;
    Acceptance criteria: normal charging
    Testing equipment: PC, charging head

    3.Data transmission Test

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    Check method: After connecting the hand to the PC in the power-off state, can you add, delete, format the TF card and other operations on the PC;
    Acceptance criteria: PC recognizes the USB port, and the data can be transmitted normally
    Testing equipment: PC

    4.Free fall Test

    Inspection method: Set the data cable to a height of 1 meter, and the connector parts at both ends of the data cable fall from the front and the side to the concrete floor respectively, and the number of drops is 10 times
    Acceptable standards: There is no obvious bad appearance of the data line, no loosening of the wiring head, and good function
    Inspection equipment: drop machine

    5.Pull test

    Inspection method: hang the data cable vertically on the tensile testing machine and fix it, hang a 5kg weight at the end, and hover for 1 minute
    Acceptable standards: There is no obvious defect in the appearance of the data line, no loosening of the wiring head, good function, and no bad contact when shaking the interface end.
    Inspection equipment: tension gauge

    6.Bending and swing test

    image 31

    Inspection method: Fix one end of the data cable, and apply a weight of 500g to the other end, with a lifting distance of 25cm, swing at a rate of 30 times/min at an angle of ±60°, and swing 1000 times
    Acceptable standards: The data cable has no obvious appearance defects, no loosening of the wiring head, and good function
    Inspection equipment: swing test machine

    7.Plug life test

    Inspection method: 5,000 consecutive plugs and unplugs.
    Acceptance standard: Fix one end of the data cable, and apply a weight of 500g to the other end, with a lifting distance of 25cm, swing at a rate of 30 times/min at an angle of ±60°, and swing 1000 times
    Inspection equipment: swing test machine

    8.High temperature test

    image 33

    Inspection method: Put the data cable in a high temperature test box with a temperature of 55℃±2℃ for 4 hours, and then restore it for 2 hours under normal weather conditions
    Acceptance standards: No abnormal appearance, no corrosion of data cable terminals, meeting electrical performance requirements
    Inspection equipment: constant temperature and humidity box

    9.Low temperature test

    image 32

    Inspection method: Put the data cable in a low temperature test box with a temperature of -20℃±2℃ for 4 hours, and then restore it for 2 hours under normal weather conditions
    Acceptance standards: No abnormal appearance, no corrosion of data cable terminals, meeting electrical performance requirements
    Inspection equipment: constant temperature and humidity box

    10.ESD discharge test

    image 34

    Inspection method: Electrostatic discharge test conditions matched with mobile phone test-contact discharge: ±4KV air discharge: ±8KV
    Acceptance standard: The data cable should have no bad appearance and good function
    Inspection equipment: electrostatic gun

    11. Constant heat and humidity test

    Inspection method: Put the data cable in a constant temperature and humidity box with a temperature of 40±2℃ and a relative humidity of 93%±2 for 48 hours, and then restore it for 2 hours under normal climatic conditions
    Acceptance standards: No abnormal appearance, no corrosion of data cable terminals, meeting electrical performance requirements
    Inspection equipment: constant temperature and humidity box

    12. Salt spray test

    Inspection method: The temperature inside the box is 35℃, the concentration of salt solution is 5±1%; the pH value is 6.5~7.2; the sedimentation volume of salt spray is 1~2ml/80cm2.h; the test time is 24 hours. After the test is completed, take out the test piece, wash off the adhering salt particles with water below 38℃ as soon as possible, remove other corrosion products with a brush or sponge, and blow dry the test piece with compressed air without oil mist. And return to temperature for 24h at room temperature.
    Acceptance standard: The data line terminal is non-corrosive and meets electrical performance
    Inspection equipment: salt spray test machine

    13. Toxic and hazardous substance detection

    In addition, the data cable also needs to detect toxic and hazardous substances such as RoHS, REACH SVHC, halogen, and o-benzene.

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