Point Grey Research, Inc.     APC by Schneider Electric     Digi-Key Corporation

Image credit:  Point Grey Research Inc.; APC by Schneider Electric; Digi-Key Corporation

 

Video cables are used for the transmission of video signals, including monochrome, composite and component color video signals. They are used with video cards, cameras, monitors, servers, and multiplexers; digital to video recorders (DVR); and scan and video converters.

Video Standards

Video standards include RGB, Y PbPr, Y/C (S-Video), and composite. RGB is a type of component video output in which red, green, and blue image components are transmitted as separate signals over three separate wires, allowing for full bandwidth for each component. Y PbPr is a component video format in which three signals (Y, R-Y, and B-Y) are transmitted via separate cables. S-Video or Y/C output contains two separate signals, luminance (Y) and color (C), which are transmitted on two separate video cables. The C color component is modulated on the same 3.58 MHz sub-carrier as it would be for NTSC output, but the bandwidth is not limited as it must be for composite output.

 

Specifications

 

Technology

 

The GlobalSpec SpecSearch database categorizes video cables according to technology (communication protocol) and/or application. 

  • CC-LINK cables use a high-speed industrial communications protocol that enables devices from different manufacturers to communicate.
  • Fibre channel cables are twisted-pair, coaxial, or fiber optic connections that provide high-speed, serial data transfers. Using optical fiber, fibre channel arbitrated loop (FC-AL) supports full-duplex data transfer rates of 100 Mbps.
  • FireWire video cables or IEEE 1394 video cables are used for high-speed connections between personal computers (PCs) and peripherals such as graphics cards, high-speed scanners, direct video, and monitors. They provide very fast digital data transfers such as streaming video.
  • HDMI cables use high-definition multimedia interface, a standard digital audio/video interface protocol.
  • Ethernet cables are designed to run at 10 Mbps, 100 Mbps, or 1 Gbps. They support the Ethernet network protocol for local area networks (LANs).
  • Patch cables or patch cords are flexible cables terminated at both ends with a plug. They are used for interconnecting circuits on a patch panel.
  • Parallel cables simultaneously transmit multiple bits of data over separate lines and are usually unidirectional.
  • SCSI cables use the small computer systems interface (SCSI) for parallel communications.
  • Serial video cables transmit data sequentially, one bit at a time. Examples include RS-232, RS-422, and RS-cables.
  • USB video cables are used for low-to-medium speed peripheral device connections to personal computers. They are also used for monitor controls.

Gender

Video cable connectors are available in multiple gender configurations.  Male connectors, sometimes called plugs, consist of a protrusion which fits into the female connector, sometimes known as a receptacle. 

 

 

A male (left) and female (right) connector.  Image credit:  Amphenol Alden Products Company

 

 Common video cable configurations include:

  • Male-Male:  both ends of the cable terminate in a male connector.
  • Male-Female:  the cable features a male connector on one end and a female on the other.

  • Female-Female:  both ends of the cable terminate in a female connector.

Connectors

  • BNC connectors are bayonet-style locking connectors.  They are typically used for A/V applications, as well as older devices and third party monitors.

 

A BNC connector.  Image credit:  CONEC 

  • DB connectors are used to connect computer peripherals.  They are available with a variety of pin arrangements.

DB9 (9 pin) connectors.  Image credit:  APC by Schneider Electric  

  • DIN connectors are designed to adhere to standards from Deutsches Institut für Normung (DIN), a German national standards body.
  • DVI connectors are able to transmit analog (DVI-A), digital (DVI-D) or analog / digital (DVI-I) data.  The DVI-D is the most common DVI connector.

DVI connectors. Image credit:  Digi-Key Corporation

  • FireWire® connectors are available in 4-, 6- or 9-pin configurations. 
  • High density 15 (HD-15) connectors are VGA connectors with 15 pins.
  • RJ connectors are modular connectors used for telecommunications and serial applications.

An RJ-11 connector.  Image credit:  Newark / element14

  • USB Type B connectors are square shaped with beveled edges and have 4 pins.

References

 

Columbia ISA - Audio Video Cables and Connections

 

DataPro - All About DVI

 

Digital Connection - Video Cable Selector and Usage Guide

 


Related Products & Services

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  • Ethernet Cables

    Ethernet cables are designed to support Ethernet, a standard protocol for the connection of computers in a local area network (LAN). They use twisted pair cables and modular connectors, and are designed to run at 10 Mbps, 100 Mbps, or 1 Gbps.

  • Network Cables

    Network cables are used in the transmission of data across networks. Choices include Fibre Channel, FireWire or IEEE 1394, GPIB, serial, parallel, patch, SCSI, Ethernet and USB.

  • Patch Cables and Cords

    Patch cables and cords are flexible cables that are terminated at both ends with a plug and used to interconnect circuits on patch panels. They are used with patch panels, groups of ports that connect lines between communications and electronic devices.

  • SCSI Cables

    SCSI cables are used for high-speed bus connections between small computers and intelligent peripherals such as hard disks, printers, and optical disks.

  • Serial Cables

    Serial cables are used for the serial transmission of data. They support communication standards such as RS232, RS422, and RS485, as well as Fibre Channel, IEEE 1394 or FireWire® (Apple Computer, Inc.), and universal serial bus (USB).