What Is a Patch Cable?

The jumper is actually a metal connection line connecting the two demand points of the circuit board (PCB). Due to different product designs, the jumper uses materials and thicknesses are different. Most jumpers are used to transmit the same potential voltage, and there are also reference voltages used to protect the circuit. For precision voltage requirements, the voltage drop caused by a little metal jumper will also have a great impact on product performance.

Jumper

There are computer board jumpers,

The connection method of RJ45 line is as follows

B end A end

1. pin white orange <> white green

As an important part of the wiring system, the jumper has not been paid much attention to. The test problem of the jumper is only mentioned in the standard in the past two years.

TIA / EIA-568-A-4-1999: 100

For jumpers, an important performance is performance when bending,

The UTP twisted pair is generally a solid wire core, so it is poor in manageability. The first is that the cable is relatively hard and is not conducive to bending. The second is that the solid core cable will have obvious return loss when it is bent, which will cause the performance of the cable to decrease. Therefore, the solid core cable generally has a bending radius. Explicit requirements. For multi-strand flexible core cables, which are specifically used to manage jumpers, these problems are eliminated.