RF connector Product quality, the advantages and disadvantages, the first characteristic is reflected from the appearance of the product quality, whatever the product, or the semi-finished products, must pay attention to appearance quality in production, the strict control and inspection. Sheath is the appearance of the cable, the requirement is smooth and rounded appearance, uniform luster, unbiased core (deviation) shall not exceed the stipulated, no mechanical damage, flattening, perception visible sundries, air bubble, no blister, clear grain, bamboo, twist, etc. Sheathed in addition to meet the quality requirements, quality of cable sheath thickness also has certain influence.
GPS antenna Sheath thickness less than standard requirement, of course, is not qualified, but the thickness is beyond the standard requirements, and unqualified. Such as: cable type for ZR - KVVP4 * was 1.5, the measured average thickness of sheath thickness of 1.6 mm, this model as reference to GB9330-88 standard request, the thickness should be 1.2 mm. For the unqualified reason has the following points:
(1) reduce the service life. Cable laying, after a long time electricity, electricity can generate heat, conductor allows working temperature is 70 ℃, polyvinyl chloride (PVC) long-term use of temperature should not exceed 65 ℃, if in the summer, the temperature will rise, the temperature will be through the outer sheath, and sheath thickness increase, the heat is difficult to send out, will affect the service life of the cable, because of polyvinyl chloride (PVC) under the action of heat, has brought a series of physical and chemical changes in the insulating layer, the loss of the good performance of the original cause insulation performance decreased obviously, and there will be a short circuit, affecting the normal operation of the unit.
(2) the material performance defects. Material performance is not reflected by thickness, according to the GB8815-2002 standard requirements,
It one of the indicators is not standard, the flame retardant PVC material, it the oxygen index of less than 30.
(3) the cable structure problems. If the conductor, insulation, weaving density, according to the standard control, selecting the appropriate filling material make it round, sheath how crowded so thick?
(4) increase the difficulty of cable laying. Now give priority to with bridge or wear tube cable laying, now many enterprises are the cable requirements on tight, small diameter, has space during the installation process, send out heat, ensure the cable outer sheath is not damaged, otherwise, bring some difficulties in construction unit and cable laying.
RF cable assembly To sum up, the thickness of sheath shall be in accordance with the standard controls, such already save resources for the enterprise, reduce material consumption, increase profits, and can ensure the quality of cable, create a high quality and low price products.
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