DB13W3 (13W3) is a style of

D-subminiature The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems. Description, no ...

connector commonly used for

analog Analog or analogue may refer to: Computing and electronics * Analog signal, in which information is encoded in a continuous variable ** Analog device, an apparatus that operates on analog signals *** Analog electronics, circuits which use analog ...

video interfaces. The 13 refers to the total number of pins, the W refers to workstation and the 3 refers to the number of high-frequency pins.

Usage

It was used primarily on Sun Microsystems,

Silicon Graphics Silicon Graphics, Inc. (stylized as SiliconGraphics before 1999, later rebranded SGI, historically known as Silicon Graphics Computer Systems or SGCS) was an American high-performance computing manufacturer, producing computer hardware and sof ...

(SGI) and IBM RISC

workstations A workstation is a special computer designed for technical or scientific applications. Intended primarily to be used by a single user, they are commonly connected to a local area network and run multi-user operating systems. The term ''worksta ...

, as well as some displays from Apple Computer,

NeXT Computer NeXT Computer (also called the NeXT Computer System) is a workstation computer that was developed, marketed, and sold by NeXT Inc. It was introduced in October 1988 as the company's first and flagship product, at a price of , aimed at the hig ...

and

Intergraph Corporation Intergraph Corporation was an American software development and services company, which now forms part of Hexagon AB. It provides enterprise engineering and geospatially powered software to businesses, governments, and organizations around the w ...

. The 13W3 connector is no longer used with modern displays; it was superseded for use with analog displays by the

VGA connector The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, as well as many monitor ...

, and as the display market has moved to digital flat panel displays that has in turn been replaced almost entirely by digital connections (

DVI Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source, such as a video display controller, to a display device, such as a comp ...

HDMI High-Definition Multimedia Interface (HDMI) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controlle ...

, or

DisplayPort DisplayPort (DP) is a digital display interface developed by a consortium of PC and chip manufacturers and standardized by the Video Electronics Standards Association (VESA). It is primarily used to connect a video source to a display device su ...

Non-video use

3Com 3C16987A SuperStack3 Switch 3300 SM

A variant of the DB13W3 connector, with high-current pins instead of the high-frequency pins used for video applications, is also used by some

3Com 3Com Corporation was an American digital electronics manufacturer best known for its computer network products. The company was co-founded in 1979 by Robert Metcalfe, Howard Charney and others. Bill Krause joined as President in 1981. Metcalfe e ...

SuperStack

Ethernet switch A network switch (also called switching hub, bridging hub, and, by the IEEE, MAC bridge) is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A netw ...

es to carry DC power. It has also been used in various industrial appliances.

Specifications

The connector contains 10 standard signal pins and 3 larger positions that can be fitted with either special pins with two concentric contacts for coaxial cable or with special high-current pins. When used for video signals on the computer side, the pins are female but the coaxial connectors in the large positions are male. The coaxial connectors carry the video signal split into red, green/gray, and blue; the standard signal pins carry four grounds, three "sense" pins used to communicate with the monitor, vertical sync, horizontal sync, and a composite sync signal. DVI-A to DB13W3 cable

The 13W3 connector can be converted into a standard

DVI-A Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source, such as a video display controller, to a display device, such as a c ...

using commonly available cables and adapters. This allows

multisync A multiple-sync (multisync) monitor, also known as a multiscan or multimode monitor, is a raster-scan analog video monitor that can properly synchronise with multiple horizontal and vertical scan rates. In contrast, fixed frequency monitors can o ...

monitors, which became prevalent in personal computing in the late 1980s, to be used with these workstations as long as they are sync-on-green compatible. Likewise, later-generation Sun monitors, which began supporting multisync in 1998, can be connected via similar cables to personal computers. Even though 13W3 is a standard connector, the sync signals are maintained on different pins based on the display and system. Sun, Intergraph, IBM and SGI each use different pin configurations for the monitor sense ID and sync signals. Sun and SGI each even have two different pin configurations: with and without

Display Data Channel The Display Data Channel, or DDC, is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the com ...

support. The Sun DDC connector was used at least on the UPA graphics adapters (Creator 3D, Expert 3D) and for their corresponding monitors (GD5410, GD5510). This can make matching the correct cable to the monitor virtually impossible. Many monitors with 13W3 connectors do not support separate sync as supplied on most PC systems. Other converters exist to allow connecting newer monitors with

VGA Video Graphics Array (VGA) is a video display controller and accompanying de facto graphics standard, first introduced with the IBM PS/2 line of computers in 1987, which became ubiquitous in the PC industry within three years. The term can no ...

connectors to the older systems and workstations. The most popular of these is a cable with a series of DIP switches built in that can be used to set the sync signals.

References

External links

Sun FAQ
- pinout for the 13W3 connector
13w3 connector applications and pinouts

Example of an Apple Inc. card which uses a 13w3 connector
{{AVconn Analog video connectors Sun Microsystems Silicon Graphics

Usage

Non-video use

Specifications

See also

References

External links