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Features and Application of D-Sub Connecto

Views: 3     Author: Site Editor     Publish Time: 2022-08-08      Origin: Site

D-Sub connectors, also known as D-subminiature or simply DB. Although in today's electronic devices, D-Sub connectors are less standard, some products will still use them, so what are the features of D-Sub connectors that can make them so durable? D-Sub Cable harness manufacturers Maojia through this article to discuss with you.


What is D Sub?

D-Sub connectors used to be the minor type of connector in computer systems. They connected computers to monitors, printers, and floppy disk drives. Although they are no longer popular in consumer electronics, they are still a relatively popular interface in some commercial equipment.


Features of D-Sub connectors

Their most vital feature is the two screws that hold the connector in place, creating a semi-permanent connection. Their D-shaped shield also provides mechanical support, ensuring proper orientation and potentially shielding against electromagnetic interference. Another advantage of the older electrical connector is that it can carry many pins and sockets. Choose between a low-density D-sub with two rows of pins/sockets or a high-density D-sub with three rows.


Applications for D-Sub connectors

RS-232 serial communication is one of the few places where D-Sub still exists. Network ports, computer video outputs, and game controller ports now feature smaller, more efficient connectors such as HDMI and DisplayPort. However, because of its rugged construction, D-Sub has survived these technological advances.


D-Sub connectors and the evolution of display interfaces

D-Sub vs. VGA v. DVI

The downside of D-Sub is not only its size but also its poor signal transmission. VGA or video graphics arrays are a specific type of D-Sub connector; DE-15. While most D-Sub connectors are entirely obsolete, DE-15s are still only slightly obsolete. They carry analog video signals and are used on older computer models and monitors. DE-15 refers to an "E" size D-Sub connector with three rows of 15 pins.


The first innovation in display interfaces was the DVI connector in 1999. The DVI or Digital Visual Interface can support both analog and digital signals. This connector is available in three variants: DVI-A (analog only), DVI-D (digital only), and DVI-I (analog and digital). The introduction of digital signals creates a more transparent, faster, and more accurate video display. DVI connectors are also hot-swappable, so users can quickly connect and disconnect cables without fear of potential damage. As you may have guessed, analog-only DVI connectors have been phased out along with VGA.


HDMI, DisplayPort, etc.

The problem with VGA and DVI connectors is that they can only transmit video signals. The HDMI and DisplayPort connectors solve this problem. HDMI (High Definition Media Output) was introduced in 2002 and combined video and audio signals in a compact, pluggable connector. It is used for computer monitors, digital TVs, and DVD or Blu-ray players. The latest updates to HDMI can support 24-bit uncompressed audio at 192 kHz and video resolutions up to 4096 x 2160, also known as 4K or Ultra HD.


DisplayPort is another digital display interface introduced in 2008 that can carry video and audio signals. It is primarily used to connect computing devices to the display. DisplayPort uses packet transfers shared in Ethernet and USB connections. The latest version of DisplayPort supports resolutions of up to 8K (7680 x 4320) at 60 Hz.


USB Type C over HDMI (HDMI Alt Mode)

If you can't decide which connector to use, don't worry. Like USB connectors, HDMI connectors are in the process of being standardized. The new USB Type C, when used with USB 3.1 technology, is an all-in-one connector that can carry data, power, and video signals. A new USB type C over HDMI cable is in development, eliminating the need for a USB to HDMI adapter. Only one cable is needed to connect electronic devices to the display.


With the advancement of technology, the D-Sub interface may be buried in history. However, even if it is eliminated from use in the future, it is still an essential part of the history of display interfaces, leaving an indelible and vital mark. What's more, today, many devices will still choose it because of their stability.


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