Coaxial cable so far can be divided into two basic types, baseband coaxial cable and broadband coaxial cable, baseband coaxial cable to date is also the longest use of a cable, it has high bandwidth and excellent noise suppression Sex, so widely used in digital transmission and analog transmission. And broadband coaxial because of its broadband system coverage area is also widely used.
SYV cable full name solid polyethylene insulated RF coaxial cable, coaxial cable in a.
SYV-75-5: SYV stands for video cable, 75 represents impedance of 75 ohms, and 5 represents wire thickness.
SYV 75-5-1 (A, B, C)
S: RF Y: Polyethylene insulation V: Polyvinyl chloride sheath A: 64 Series B: 96 C: 128
75:75 ohm 5: wire diameter 5MM 1: on behalf of a single core
SYV cable role: monitoring commonly used video lines are mainly SYV75-3 and SYV75-5 two. If you want to transmit video signals within 200 meters can be used SYV75-3, if the range of 350 meters can be used SYV75-5.
SYV cable use environment: equipment bracket connection, CCTV (CCTV), shared antenna system (MATV) and color or monochrome radio frequency monitor transfer. These applications do not require the selection of precision video coaxial cable with exceptionally stringent electrical tolerances. Video coaxial cable characteristic resistance is 75 ohms, this value is not arbitrarily selected. The physics proves that the attenuation characteristics of the video signal are optimized at 77 ohms. In low power applications, the material and design determines the optimal impedance of the cable is 75 ohms.