-
Anonymous users2024-02-07With the rapid development of network technology, the emergence, development, improvement and popularization and application of this technology is not only the gospel of the industry, but also the responsibility of everyone.
Around four or five hundred meters, the image quality is very poor.
In the transmission project of 1-2 km, coaxial is not good, optical fiber is too expensive, and twisted pair is the best"It solves the puzzle above very well"。It doesn't have coaxial cables"Faults", can transmit kilometers without distortion, and the transmitted image quality can be comparable to that of the optical transceiver.
**Cheap, simple construction, good anti-interference performance, can be multi-channel transmission and so on.
-
Anonymous users2024-02-06The internal resistance is small! The wear and tear is also small!
-
Anonymous users2024-02-05Yes, both coaxial wires and two-wire stranded wires are symmetrical wires, and they both have two or more concentric metal conductors that are kept at the same distance from each other. They have very good immunity to ground interference, transmission performance and service life.
-
Anonymous users2024-02-04In the beginning, there was a coaxial cable in the Ethernet erection medium (which required the support of the BNC interface network card), and later the advantages of twisted pair gradually surpassed that of coaxial cable, so it is rare to see a network built with coaxial cable nowadays.
It is also feasible to use twisted pair instead of coaxial cable as the signal transmission medium of the camera, and only 8 cores of 4 cores are used. However, for the ** signal with coaxial cable as the medium, the twisted pair will have a delay of a few seconds. Twisted pair (TP) is the most commonly used transmission medium in integrated wiring engineering, which is composed of two copper wires with an insulating protective layer.
Two insulated copper wires are twisted together according to a certain density, and the radio waves radiated by each wire in the transmission will be canceled by the radio waves emitted by the other wire, effectively reducing the degree of signal interference.
The twisted pair is generally made of two 22 26 gauge insulated copper wires wound with each other"Twisted pair"Hence the name. In practice, twisted pair wires are made up of multiple pairs of twisted pairs wrapped together in an insulated cable sleeve. If one or more pairs of twisted pair wires are placed in an insulating sleeve, it becomes a twisted pair cable, but in daily life, it is generally put"Twisted pair cables"Directly called"Twisted pair"。
Coaxial cable can be divided into baseband coaxial cable and broadband coaxial cable (i.e., network coaxial cable and **coaxial cable) in terms of use. Coaxial cables are divided into two categories: 50 baseband cables and 75 broadband cables. Baseband cables are divided into thin coaxial cables and thick coaxial cables.
The baseband cable is only used for digital transmission, with data rates up to 10Mbps.
A coaxial cable is a cable that has two concentric conductors, and the conductor and shield share the same axis. The most common coaxial cable consists of a copper wire conductor isolated by an insulating material, another ring conductor and its insulator on the outside of the inner insulation, and then the entire cable is encased by a sheath of PVC or Teflon material.
Are the coaxial cables you talking about a closed route for us to watch TV? In many cases, you can connect the core in the middle (preferably soldered with tin), wrap the insulating material, crimp the shield tightly together (connect as many as possible), and finally wrap it tightly with insulating tape. Note that the core and shield cannot be short-circuited. >>>More
But the broadband lines we use now are generally Category 5e cables; Super Category 5"Refers to the Category 5e unshielded twisted pair (UTP). >>>More
1. Hong Kong stocks have three advantages over A-shares:
2) Hong Kong stocks have abundant trading methods, and Hong Kong stocks have rich investment means, and they can make money regardless of bull and bear markets. In particular, you can use ** and the corresponding options to combine a variety of investment strategies to hedge risks. Relying on different portfolios, you can make a profit at **** or **, and you can also lock in gains or limit the range of losses. >>>More
There are two concentric conductors, and the conductor and shield share the same axis, the coaxial cable. >>>More
Comparing safety with other modes of transportation is not for winning or losing, but for reference to travel, and it is meaningless to blindly denounce or praise. There is no ideal environment for comparison, only analysis from different angles, so there is no single standard answer. In terms of the title, my answer is: >>>More