• 

  index

Indicators are detailed

VSWR

1. VSSR closer to 1 the better, VSWR closer to 1 return loss is smaller, the system's measurement accuracy is high.

2.VSWR stability - test cable in the jitter, bending process VSWR curve can remain stable without drift, directly determine the consistency of the device under test.

Mechanical stability, steady amplitude

Mechanical amplitude: the degree of change in insertion loss of the cable during bending.

In the measurement process, the test cable bending will lead to the loss of insertion loss, that is, we often say that the amplitude changes. Causing the fluctuations generated by the test cable to be tested into the test data of the component, which directly affects the accuracy of the test data.

For example, if the test cable in the 6G bending produced 0.1dB drift, so

Measured components of the measurement error is 0.1dB. Many of the isolator itself, the insertion loss is very small, so that the measurement error is very large.

Mechanical stability: the degree of change in the phase of the cable during bending.

Part of the special applications of RF components need to measure its phase at a fixed frequency degree, in this case, the test system phase accuracy has a very high demand. The biggest factor affecting the phase in the test system is the test cable. Test the bending of the cable will cause the cable phase changes. High-precision test cable with repeated bending under the mechanical phase stability is good, the degree of change in the degree of small features.

Insert loss

The insertion loss of the test cable can be calibrated at the web port, not an important indicator of the test process, but the IL low test cable has the effect of reducing the energy loss of the test system.

The insertion loss of the test cable consists of the following parts:

V connector loss

V cable loss

V Impedance does not match the loss caused

Retention (longitudinal tension)

The test cable is easy to be pulled and twisted during use.

common problem:

V cable break

V connector is broken at the cable connection

The retention of the test cable has the characteristics of good material in the weaving layer and the optimization of the connector structure.

Number of Bends

The number of times of bending is directly related to the structure and material of the cable. If the repeated bending of the cable is not good, likely to cause:

Center conductor breaks

The braided wire is deformed or broken

Dielectric layer deformation

Armor solution

In order to enhance the protection of test cables, armor is required for components to enhance its environmental adaptability.