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Introduction of wire types
Sep 18, 2017


                            Introduction of wire types

If the structure and use of wire is divided, at present, the production of consumer-type cables in the market are mainly divided into DVI line, USB cable, IEEE 1394 line, coaxial line, SCSI cable, IEEE 1284 line, single-core or twisted-type computer lines, ATA 150 lines, telephone lines, network lines and miscellaneous rules line, etc.



DVI is the abbreviation of (Digital video Interface), called the digital visual interface. It is used to display the signal transmission between the card and the monitor, which is the line of the liquid crystal display. DVI is mainly divided into three categories, namely:

DVI (Dvi-digital)-digital signal transmission, which is divided into two types:

A) DVI single link, four pairs transmit R. G. b signal in Time pulse (Clock) signal;

b) DVI Dual Link: Double link, compared to single link, transmission two sets of R. G. B signals, sharing 1 pairs of time pulse signal, transmission equivalent to a single link twice times the signal.

Dvi-a (Dvi-analog)--Analog signal transmission

DVI--Analog and digital signal coexistence transmission

The structure of the DVI consists of 4 pairs or 7 pairs of signal lines, and the insulators are foamed polyethylene fm-pe, in the middle of the ground, and then foil, Mylar coated, my company's usual color is "brown * white, red * white, green * white, Blue * white", also includes a pair of unshielded stranded wire, used to control the screen up and down and move around, as well as 3-core power cord.

DVI-A structure is the use of RGB coaxial axis as a signal transmission bridge, insulation for Styrofoam fm-pe, the color is "red, green or gray, blue", the rest and DVI are basically the same.

The structure of DVI is the synthesis of DVI and dvi-a, and their structures are as follows:



IEEE1394 Cable

IEEE 1394a Computer Multimedia line

The structure consists of two pairs of signal lines (red * green, Blue * orange) and two power cords (black, white), also some specifications without power cord, signal line insulation for foam PE, with aluminum foil and tinned copper wire braided isolation, the total package for the Mylar, aluminum foil and woven. It is a high-frequency transmission line, mainly used in video, digital cameras, digital appliances, color scanners, and so on, its structure is as follows:


IEEE1394b Computer Multimedia Line

The structure and a version is different in the signal to the line by adding two ground lines, there is a package of different, B-version of the signal line to the package of aluminum foil, Mylar, no knitting. In the electrical characteristics, b version of the attenuation requirements to improve a lot, the transmission rate is also much faster than a version of the structure is as follows:


Coaxial Cable

Coaxial line in my company's production is also a considerable part of we divided it into four parts, the first part is the use of mil-c-17f (U.S. military standard) RG type High-frequency coaxial cable, the second part is the use of JIS (Japanese industrial standard) specifications of the coaxial cable, the third part is the RGB coaxial line, Finally, part four is the general single core coaxial cable.

RG Cable High Frequency coaxial cable

Definition: Coaxial cable, containing two concentric conductors, the two conductors are separated by appropriate medium, and the outer conductor is usually grounded potential, whose effect is to make the current of the central conductor have a circuit to prevent the radiation of the cable energy, the outer conductor is usually woven or covered with metal, and the insulator is PE or Fm-pe, FEP. such as RG58, RG316, RG179, etc., the general structure of the following figure:



High-frequency coaxial cable must have high speed, long distance and low leakage, in addition to the isolation effect to meet the requirements of FCC Rfi/emi, the use of low smoke non-toxic materials to meet the high density line and fire effect requirements. It is suitable for transmission system and signal control system, such as high frequency machine connection line, internal wiring, antenna feeder, carrier channel line and wire.

RGB Coaxial Cable

RGB is the first letter combination of red (red), green, or gray, blue (blue) Three colors, also known as the monitor Cable display line, which is dedicated to the computer screen. Single-core coaxial insulator is foam PE, the characteristic impedance of 10MHz requirements for the 75卤5蠅; surface is generally made of toothed, the structure of the chart is as follows:


General coaxial cable is also called single core isolation cable, refers to such as 1185 coaxial axis, 1354 coaxial axis, 1365 coaxial axis, 1792 coaxial axis, and so on, they are UL AWM model of the single core line, these single core lines are also composed of other composite cable basic unit, such as RGB in the single core coaxial.

Small computer system interface cable series

scsi (Small computer systemsinterface) cable conforms to the SCIS Association standard, and SCSI is the interface of the small calculator system. At present, our company produces SCSI line has 25 pairs and 34 pairs, insulators with Fm-pe. According to its multiple-line, low attenuation, large capacity and other characteristics, widely used in high-speed printers, multiple interface digital transmission interface, such as small calculator interface equipment.


IEEE 1284 Cable List Machine line

IEEE 1284 list Machine Line standard specifications for the 18P twisted Wire, with polypropylene (PP) insulation, each pair of line after the PP film longitudinal package, plus aluminum foil, tinned copper wire more than 85% masking rate braiding shielding. It is used for a connection to a list machine.


Single-core or twisted-pair computer line

As the name implies, this is a single core line or twisted wire cable. Depending on their structure's differences and uses, they can be divided into the following sections to illustrate:

Scanner Cable (UL20276) scanner line

By 12 pairs of twisted wire and 1-core single core line (that is, 12 halves), the conductor is 28AWG tinned copper wire, the insulator is pp. Apply a line to the scanner connection.


Computercable (UL2464) single, double layer shielded computer cable

Single-core computer line, core line for UL1061, data transmission cable, applied to broadcast, audio-visual equipment, equipment, computer line, in line with EIA RS-232 International electrotechnical specifications.


Twisted-type computer line, cored wire for UL1061, data transmission cable, used in broadcasting, audio-visual equipment, equipment, computer line, in line with EIA RS-232 International electrotechnical standards.


Computer Cable (UL2960) Double shading computer cable

Twisted-type computer line, core-line insulation for PP, data transmission cable. Used in radio, audio-visual equipment, equipment, computer lines, in line with EIA RS-232 International electrotechnical standards.


LAN Cable Area Network Line

The area network line has 22AWG and 24AWG, network cable is mainly based on four pairs of lines, with high-density PE insulation, the conventional color "blue */blue, Orange * white/orange, green * white/green, brown * white/brown", there are CAT3, CAT4, CAT5, $literal, CAT6 these wire, Conductors separate copper and stranded copper, includes shielded (FTP, SFTP) and unshielded (UTP), regional network lines support a variety of cabling structure and a variety of transmission media, such as voice, digital, message, image, video communications, such as local network environment, for high-speed, high-capacity, such as multimedia integrated Services, Data communication Network Intelligent building.



HDMI  Cable

The earliest HDMI version, launched in December 2002 1.0 version, can be said to be designed for the year Blu and other Full HD software, its biggest feature is the integration of video and audio transmission, compared to the computer DVI, DisplayPort pure image Transmission interface, more suitable for AV equipment use, HDMI 1.0 already supports DVD and Blu video, with a maximum HF width of 4. $number Gbps, of which 3. $number Gbps is used as a video stream to support 1080/60p or UXGA resolution; The audio aspect supports the 8 channel LPCM 24bit/192khz, In other words, it has been broadcast to multichannel hi-res, which is quite strong in comparison with cable specifications over the same period. The update has now been upgraded to HDMI2.1. The later version of the change is mainly in the design parameters above, wire structure did not make changes!




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