What are the details to pay attention to when purchasing J1939 male and female cables?

What are the details to pay attention to when purchasing J1939 male and female cables?

There are many details to pay attention to when purchasing J1939 male and female cables. The following will introduce specifications, quality, and performance:

In terms of specifications and parameters

Pin definition and arrangement: It must be strictly matched with the device used to ensure that the pin definition and arrangement order of the male and female heads are completely consistent with the J1939 device interface they are connected to, otherwise normal communication cannot be achieved.

Cable length: Select based on the distance between devices in actual usage scenarios. Too long can cause signal attenuation, while too short cannot complete the connection. Generally speaking, a certain margin should be reserved, but not too long.

Core specifications: Select the appropriate core specifications based on the requirements of transmission current and signal. If high current transmission or high signal quality requirements are needed, cables with large core cross-sectional area and good conductivity should be selected.

Protection level: Depending on the usage environment, such as humid, dusty, oily, or corrosive environments, cables with high protection levels (such as IP67 or above) should be selected to ensure their sealing and corrosion resistance.

Quality and performance aspects

Material: The core wire of high-quality cables is usually made of high-purity oxygen free copper, which has good conductivity and anti-interference performance; The insulation layer and shell should be made of durable, high temperature resistant, and wear-resistant materials such as polyurethane, fluoroplastics, etc.

Shielding performance: To prevent electromagnetic interference, J1939 male and female cables generally require a good shielding layer. You can choose cables with shielding layers such as metal braided mesh and aluminum foil, and check the coverage and grounding of the shielding layer.

Electrical performance: The cable is required to have low resistance, low capacitance, and low inductance to ensure fast and accurate signal transmission. At the same time, the insulation resistance should be high and able to withstand a certain withstand voltage value to avoid problems such as leakage and short circuit.

Manufacturing process: The manufacturing process of high-quality cables is fine, with tightly and evenly wound core wires, tightly wrapped insulation and shielding layers, no bubbles, and no damage. The male and female connectors are firmly connected, smoothly inserted and removed, and have good contact.