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Technology changes in flat screen displays have impacted video cables, as described in this selection guide.
Flat screen display technology is constantly evolving. After decades where monitors were driven by analog video signals, today's flat screens often have both analog and digital video input connections available. Also, these flat screens are growing larger and operating at higher screen resolutions.
These changes have led to a growing array of video cables available to connect control console equipment to flat screen monitors. As a result, picking the right monitor cables for your project involves informed cable selection. Provided here is an overview of common video cables you may encounter or require for your project.
- SVGA - Analog video signal only
This is the cable we supply as standard. SVGA typically supports screen resolutions up to 800 X 600 (5:3 aspect ratio). However, increased cable quality allows SVGA to handle resolutions up to 2048 X 1536. Most control room videos are primarily static displays with dynamic values or color changes occurring at relatively slow speeds, and are thus adequately serviced by an SVGA cable. If required, the cables shown below can be substituted for the SVGA cable:
- DVI-D - digital video only; single link
This is the most common digital video cable. It is identified by two sets of 9 pins and a single blade connector (wide pin on left).Typically supported are screen resolutions up to 1920 X 1200 (16:10 Ratio).
- DVI-D - digital video only; dual link
Used for higher resolution flat screens or high bandwidth applications like 3-D video, it is identified by one set of 24 pins and a single blade connector. Typically supported are screen resolutions up to 2560 X 1600 (widescreen 16:10 ratio), for which the maximum length is 5 meters (longer cables available). While DVI dual link video resolutions are similar to HDMI, they do not carry an audio signal.
- DVI-D - Single link to HDMI; digital video only
HDMI is a newer digital interface developed for consumer electronics, often used to connect electronic devices to large HDTV displays. The connector on the right end of cable above is the same as DVI-D single link, while the connector on left end is the HDMI. Typically supported are 1080P resolutions and flat screen resolutions up to 1915 X 1436 (4:3 ratio) or 1920 X 1200 (widescreen 16:10 ratio). This cable does support an audio signal.
- DVI-I - Integrated digital and analog video; single link
DVI-I single link carries both an analog and a single channel of digital video data. It is identified by two sets of 9 pins on right and a single blade connector (wide pin on left), with two small pins above and below the blade. Typically supported are screen resolutions up to 1600 X 1200 (widescreen 16:10 ratio).
DVI-I - Integrated digital and analog video; dual link
DVI-I dual link is identified by one set of 24 pins on right and a single blade connector (wide pin on left) with two small pins above and below the blade. Typically supported are screen resolutions up to 2560 X 1600 (widescreen 16:10 ratio).
When our AgileVIEW product line was first introduced in 2003, most control consoles used analog flat screens and required VGA or SVGA cables to connect computers or other control systems devices. Even today, most customers are connecting their new flat screens using the SVGA analog input connector, so currently offer an SVGA cable (with ferrites for noise reduction) as our standard for each monitor position. These cables, along with monitor power extension cords, are factory pre-installed during our assembly process to simplify console furniture installation. However, with the transition from analog to digital screen technology, we will eventually shift our standard cable offering to DVI.
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