What are the electrical performance testing standards for J1939 splitter Y cable?

What are the electrical performance testing standards for J1939 splitter Y cable?

The performance testing standards for J1939 splitter Y cable are mainly based on the SAE J1939 protocol series, and the specific electrical performance testing standards are as follows:

Electrical Performance Testing Standards

Communication speed test: Oscilloscopes or professional bus analyzers can be used to measure the transmission rate and waveform of signals to ensure compliance with standard requirements.

Bus impedance test: According to the standard, when using shielded twisted pair cables, the bus impedance should be 120 Ω, with a certain tolerance range allowed. Generally, impedance analyzers are used for testing, measuring at different positions of the cable to ensure that the impedance value is within the specified range.

Insulation resistance test: Referring to the general cable standard, the insulation resistance should not be lower than a certain value, and it is usually required that the insulation resistance per kilometer should not be less than the specified value. Use an insulation resistance tester to measure the insulation resistance between cable conductors and shielding layers, as well as between conductors, at the specified test voltage.

Voltage endurance test: According to relevant cable standards, the cable should be able to withstand a certain AC or DC voltage test without breakdown. The test voltage and time depend on the specifications and usage environment of the cable. Generally, a voltage tester is used to apply the specified voltage to the cable and observe whether there are phenomena such as breakdown and flashover.

Electromagnetic compatibility testing: Relevant electromagnetic compatibility standards must be met. Including radiation emission testing, it is required that the electromagnetic radiation generated by the cable during operation does not exceed the specified limit to avoid interference with surrounding equipment; Immunity test: The cable should be able to operate normally in a certain electromagnetic interference environment without data errors, loss, or other issues. It can be tested using electromagnetic compatibility testing equipment such as anechoic chambers and electromagnetic interference testers.