The difference between the split screen and the total screen in the cable
For the signal cable, shielding is only one aspect, not the most important side, the power cable is shielded, the key is the concept of twist: "the two insulated copper wire at a certain density twisted together, each wire The radio waves radiated in the transmission will also be offset by the waves emitted by another line. "Therefore, the transmission of many differential signals, the use of signal cables is necessary, and the actual analog signal transmission is more dependent on shielding, rather than twisting , For the analog signal using the total shielding plus single-shielded cable specification is also no clear requirements must be used (except for intrinsically safe grounding) View the original title & gt;
Called plastic terminal, there are four points, six points ....... and other sizes; if the iron pipe, there are ...50 and other sizes.
Summary Upstairs you can replace the control cable, but can not replace the communication cable? In some cases instead of the control cable, but can not replace the communication cable? View original post & gt; & gt;
