Industry News

How to check the quality of RF Coaxial Cables?

2021-05-19

How to check the quality of RF Coaxial Cables? 

 

 

Connexions Technology established in 2004 in China is professional manufacturer of all kinds of Coaxial Cables, Network Cables, SPT Power Cables,etc. Wed like to discuss about how to check the quality of RF Coaxial Cables today.

A bad quality RF Coax Cable directly affects the signal transmission and also causes unnecessary losses. The cross-section of a standard radio frequency coaxial cable is very round. The outer shield of the Coax Cable and the aluminum foil are attached to the outer surface of the insulating medium. The rounder the outer surface of the medium, the better its performance. Let’s figure out the good ways to check the quality of the RF Coaxial Cables.

  1. Observe the roundness of the insulating medium first.

    The section of the standard radio frequency Coaxial Cable is very round. The outer shield of the cable and the aluminum foil are attached to the outer surface of the insulating medium. The more rounded the outer surface of the medium, the gap between the aluminum foil and its outer surface will be smaller. The smaller, the less rounded the larger the gap. Practice has proved that the smaller the gap, the better the performance of the cable. In addition, the large gap air is likely to invade the shielding layer and affect the service life of the cable.

  2. Inspect the consistency of the insulation medium of the Coaxial Cable.

    The fluctuation of the diameter of the insulation medium of the Coaxial Cable mainly affects the echo coefficient of the cable. This inspection can cut out the insulation medium of a section of the cable. Use a micrometer to carefully check the outer diameter of each point to see it. Is it consistent? ,

  3. Check the quality of aluminum foil.

    Aluminum foil plays an important role in the shielding of Coaxial Cables. It plays an important role in avoiding external open-circuit signal interference and preventing cable TV signal leakage. Therefore, the quality of aluminum foil should be tested for new coaxial cables. First, cut the sheath layer to observe whether the surface of the braided wire and aluminum foil layer maintains a good luster; secondly, take a piece of cable and wind it tightly on a small metal shaft, straighten it and turn it in the opposite direction, and repeat it several times. Then cut the cable sheath to see whether the aluminum foil is broken or not. You can also cut out a small piece of aluminum foil and rub it and stretch it repeatedly in your hand. After repeated rubbing and stretching, it still does not break. The one with a certain degree of toughness is cooperative vomiting, otherwise For inferior products.