How to check the quality of coaxial cables?

1, observe the roundness of the insulation medium, the standard coaxial cable cross-section is very round, the cable outer conductor, aluminum foil affixed to the outer surface of the insulating medium, the more rounded the outer surface of the medium, the aluminum foil and its appearance of the gap is smaller, the more rounded the gap is larger. Practice has shown that the smaller the gap the better the performance of the cable, in addition, the large gap air is easy to invade the shielding layer and affect the service life of the cable. Dongguan Qinda high-temperature cable 2, test the consistency of the coaxial cable insulation medium, coaxial cable insulation medium diameter fluctuations mainly affect the return coefficient of the cable, this check can be dissected out of a section of the cable insulation medium, micrometer to carefully check the outside diameter of each point to see if it is consistent.

3, test coaxial cable braided wire, coaxial cable braided wire when the shielding performance of the coaxial cable plays an important role, and in the set in the power supply cable TV lines and the power supply return line, so the coaxial cable quality inspection must be on the braided network is tight and flat to see, the method is to cut open the outer jacket of coaxial cable, cut a small section of the coaxial cable braided network, the number of identification of braided nets, if the value of the indicators given with the qualified than the indicator value is less than the failed. If the value of the indicators are consistent with the qualified, less than the value of the indicators given for the unqualified. In addition to a single braided wire with a spiral micrometer to measure, at the same price, the thicker the wire diameter of better quality. 4, check the quality of aluminum foil, coaxial cable plays an important role in shielding is aluminum foil, which has an important role in preventing external open-circuit signal interference and cable TV signal leakage, so the new coaxial cable should check the quality of aluminum foil. Cut open the sheath layer, observe the braided wire and aluminum foil layer surface whether to maintain a good luster; then take a section of the cable, tightly wound in a small metal shaft, straighten to the reverse turn around, repeated several times, and then cut open the cable sheath layer to watch the aluminum foil with or without cracking phenomenon, but also dissected a small section of the aluminum foil in the hands of the hands of the repeated kneading and stretching, by many times kneading and stretching is still not fracture, with a certain degree of toughness of the qualified, or else for the second product. Dongguan Qinda high-temperature cable 5, check the tightness of the extrusion of the outer sheath, high-quality coaxial cable outer sheath are wrapped very tightly, so as to narrow the gap in the shielding layer, to prevent air from entering the cause of oxidation, to prevent the shielding layer of the relative sliding caused by the electrical properties of the drift, but extrusion is too tight will cause peeling off of the sheath to force can not be pulled out of the wire core as appropriate. 6, observe the shape of the cable into the circle, the cable into the circle is not only an aesthetic problem, but also a quality problem. And is also a quality issue. Cable into a circle flat, each cable to remain in the same concentric plane, cable and cable between the arc parallel to the whole contact, can reduce the cable mutual force, stacking is not easy to deformation damage, so in the acceptance of the quality of the cable can not be taken lightly.

2、About 3M electronic products network platform related to the introduction and sales of products briefly: 3M electronic products network - a professional agent / production / sales of a variety of {connectors | wiring harness | wire and cable products}; if you have a related [connectors | wiring harness | wire and cable products] purchasing / sourcing needs or would like to buy / to understand which connectors | wiring harness | wire and cable products we can provide solutions, please contact the Division I business personnel below; If you have related [connectors | harness | wire and cable products] sales / resources and promotion needs, please click on the ¡¡ Business Cooperation ← ¡" to discuss with a person!