Capacitance between twisted pairs
In order to ensure the integrity of the signal transmission, the CAN twisted pair must meet the requirements of the capacitance between the wires and the wires,
propagation delay
In order to ensure the real-time nature of signal transmission, the transmission time of the signal on the cable must meet the requirements, and the measurement method of signal delay is based on EIA-364-103.
In addition to the above requirements, high-speed CAN also has requirements for the wiring harness, the insulation layer of the wire, the twisting distance of the twisted pair, the position of the pin in the plug-in, and the routing requirements (avoiding antenna coaxial cables and easily affected signal lines) , while avoiding high-current lines), etc., when CAN lines are designed, they are more considered from the perspective of signal transmission theory, which is different from other power supply lines and ground lines. The design of coaxial cables also follows such design ideas, and if you have the opportunity to write your own thoughts on coaxial cables.