Summary:XLPEDue to the above-mentioned twisted pair characteristics, when the microphone cable is welded with the corresponding Canon connector, the twisted p...
Due to the above-mentioned twisted pair characteristics, when the microphone cable
is welded with the corresponding Canon connector, the twisted pair will cross at 2.3 feet, which is easy to cause the plastic to melt during welding and cause a short circuit. Therefore, some manufacturers have introduced heat-resistant switches. Connect PE as the material for the microphone cable pairPE
Since the microphone line has resistance and capacitance between lines, it produces an equivalent RC low-pass filter (which eats up high frequencies). To avoid high-frequency losses in the cable, one of the parameters of R or C must be reduced. R is resistance, which can generally be adjusted to a limited extent, and conductors that are too thick are not only cost-effective, but also affect the twist density. Generally, the thickness is set at 0.22mm, about 23AWG, and the multi-core cable will be thinner. C is the line-to-line capacitance, and the main influencing factor comes from the insulating material. Generally, the normal insulating material of the cable uses polyvinyl chloride (PVC), which has a large dielectric constant and is easy to cause obvious high-frequency attenuation at a certain distance. Therefore, polyethylene PE is mostly used as the line. against insulation. In addition, polyethylene has non-toxic chemical properties and is more environmentally friendly.