|You Are Here: PacificCable.com DVI Tutorial|
|Part Number||Description||Click Picture for Specs||Price / Qty|
|DVIDL-1||1 Meter (3 Ft. 3 In.) DVI-D Male To DVI-D Male Dual Link Digital Cable|
|DVIDL-2||2 Meter (6 Ft. 6 In.) DVI-D Male To DVI-D Male Dual Link Digital Cable|
|IMPORTANT - Our DVI cables are high quality cables that meet all specs.|
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The following information is used by permission from the Wikipedia under the GNU Free Documentation License.
The Digital Visual Interface (DVI) is a video connector designed to maximize the visual quality of digital display devices such as flat panel LCD computer displays and digital projectors. It was developed by an industry consortium, the Digital Display Working Group (DDWG).
The DVI connector usually contains pins to pass the DVI-native digital video signals. In the case of dual-link systems, additional pins are provided for the second set of data signals.
The DVI connector may also incorporate pins to pass through the legacy analog signals using the VGA standard. This feature was included in order to make DVI universal, as it allows either type of monitor (analog or digital) to be operated from the same connector.
The connector also includes provision for a second data link for high resolution displays, though many devices do not implement this. In those that do, the connector is sometimes referred to as DVI-DL (dual link).
The DVI connector on a device is therefore given one of three names, depending on which signals it implements:
- I need a DVI-I to DVI-D cable - What part number do I buy?
A DVI-I enables digital and analog signals. A DVI-D only allows digital signals. The part number to buy is DVIDL-length
Part Number Description Click Picture for Specs Price / Qty DVIDL-1 1 Meter (3 Ft. 3 In.) DVI-D Male To DVI-D Male Dual Link Digital Cable DVIDL-2 2 Meter (6 Ft. 6 In.) DVI-D Male To DVI-D Male Dual Link Digital Cable View More
- Why are your DVI cables so much less?
You are coming right to the source. Our cables meet all wiring specifications. We don't know why everybody else is so expensive.
- Is there a distance limitation?
Yes. For digital DVI cables there is a 5 Meter distance limitation. If you go longer the video results will be unpredictable and not guaranteed. The only way to safely and efficiently go longer distances is to use our OC and OLC series DVI fiber cables.
- Do I need Dual-Link or Single-Link?
This depends on your equipment. Check with your equipment documentation. If you are not sure which you need then purchase the Dual-Link cables. Dual-Link cables are backwards compatible with Single-Link so they will work with both connection types.
Part Number Description Click Picture for Specs Price / Qty DVIIDL-1 1 Meter (3 Ft. 3 In.) DVI-I Male To DVI-I Male Dual Link Digital or Analog DVIIDL-2 2 Meter (6 Ft. 6 In.) DVI-I Male To DVI-I Male Dual Link Digital or Analog View More
- Can I connect a DVI-A to a DVI-D?
Because DVI-A is analog only and DVI-D is digital you can not directly connect a DVI-A device to a DVI-D device.
- Can I connect a DVI cable to VGA?
You can connect a DVI-I or DVI-A directly to VGA using our DVIVGA cables because DVI-I and DVI-A send analog signals. You can not directly connect a DVI-D to a VGA because DVI-D only uses digital signals. In order to connect a DVI-D to VGA you first need to use a DVI Converter to electronically convert digital to analog and analog to digital.
Part Number Description Click Picture for Specs Price / Qty DVIVGA-1 1 Meter (3 Ft. 3 In.) DVI-A Male To VGA Male Analog Cable DVIVGA-2 2 Meter (6 Ft. 6 In.) DVI-A Male To VGA Male Analog Cable View More
- What is HDCP?
HDCP stands for High-bandwidth Digital Content Protection. HDCP encrypts the digital signal to prevent it from being recorded. HDCP encryption / decryption takes place within your equipment. Check your equipment documentation to see if it offers HDCP. Cables simply pass the digital signal between the HDCP compliant equipment.
- What is the TFT LCD?
TFT stands for "Thin Film Transistor" and describes the control elements that actively control the individual pixels. For this reason, one speaks of so-called "active matrix TFT's". LCD means "Liquid Crystal Display" and stands for monitors that are based on liquid crystals.
- What's the difference between CRTs size and TFT size?
The visible diagonal size of a CRT tub monitor is always smaller than the tube's actual diagonal size. For example: a 17-inch CRT monitor has an edge area and it's visible diagonal is only 16-inches. But TFT LCD monitors do not have an edge area. This means that a 15-inch TFT LCD monitor is almost the same as the 17-inch CRT monitor.
- What's the Contrast Ratio?
The Contrast Ratio is derived from the maximum and the minimum values for brightness.
- What's the difference netween Digital and Analog Interface? Any advantages or disadvantages?
TFT LCD monitors with an analog VGA interface dominate the market. Because it is easy to install PC basis and not purchase a new graphics board. Although digital TFT LCD monitors don't need to adjust clock and phase and the no signal losses advantage. The Digital Interface standard has totally different connectors and it is not easy to buy a suitable graphic board. So the analog TFT LCD monitors still dominate the market. The following table gived you an overview of the most important points:
Digital Control Analog Control Advantages
- No signal losses due to DA and AD conversion
- Geometry, clock and phase settings unnecessary - therefore simple to use
- Lower costs as less electronic circuitry required
- Currently three standards (P & D (M1DA), DFP, and DVI)
- Low availability of models with digital interfaces
- Requires graphic board with digital output
- Compatible with standard VGA boards on a broad installed PC basis
- Not necessary to purchase separate board
- Clock and phase of the TFTs must be synchronized with the analog signal to avoid pixel jitter, which is a relatively complex issue
- Cables sensitive to external influences
- High cost of signal conversion inside the display
- Upgrade to digital interface not possible
- How many Digital Interfaces are there now? Which one do I choose?
Currently there are three digital interface standards (P & D (M1DA), DFP, and DVI) in the market. The following table is the comparison and summary of the three interface standards. According to the table, DVI will be a standard in the future. DVI not only allows high resolutions, it also enables the connection of analog devices.
Standard P & D (M1DA) DFP DVI Owner VESA (Video Electronics Standards Organization) DFP Group (Digital Flat Panel Group) and later VESA DDWG (Digital Display Working Group) Revision / Date 1.0 / Jun 06, 1997 1.0 / Feb 14, 1999 1.0 / Apr 02, 1999 Web page www.vesa.org www.dfp-group.org www.ddwg.org Workgroup leader VESA Compaq Intel Compatibility Own standard P & D (M1DA) compatible (adapter possible) P & D (M1DA) and DFP compatible (adapter possible) Transfer protocol TMDS - Transmission Minimizing Differential Signaling (PanelLink) TMDS (PanelLink) TMDS (PanelLink) Max. Pixel rate (Dot Clock) 165 MHz x 1 165 MHz x 1 165 MHz x 1 Max. number of channels 3 channels (single link) 3 channels (single link) 6 channels (dual link) Color depths 12 or 24 bit 12 or 24 bit 12 or 24 bit Max. Resolution SXGA (1280 x 1024) SXGA (1280 x 1024) (Single Link) WUXGA 1920 x 1200 @ 60 Hz
(Dual Link) WQXGA (2560 x 1600) @ 60 Hz
Optional transfer of other signals possible using the same connector Analog VESA video, USB, IEEE 1394-1995 No, only digital video Analog VESA video Digital Connector P & D (M1DA)-D (30 pin) MDR20 (20 pin) DVI-D (24 pin) Analog/Digital combination connector P & D (M1DA)-a/d (30+4 pin) No DVI-I (24 + 4 pin) Connector width 40.6 mm 33.4 mm 37.0 mm
DVI Wire Specs
|Maximum System Ratings
Exceeding these limits may damage the system.
|Termination Supply Voltage, AV||4.0V|
|Signal Voltage on Any Signal Wire||-0.5 to 4.0V|
|Common Mode Signal Voltage on Any Pair||-0.5 to 4.0V|
|Differential Mode Signal Voltage on Any Pair||±3.3V|
|Termination Resistance||0 Ohms to Open Circuit|
|Storage Temperature Range||-40 to 150 degrees Centigrade|
|Required Operating Conditions|
|Termination Supply Voltage, AV||3.3V, ±5%|
|Termination Resistance||50 Ohms, ±10%|
|Operating Temperature Range||0 to 70 Degrees Centigrade|
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