What is the recommended maximum DisplayPort cable length?

Updated: Mar 24

When manufacturing consoles for mission-critical environments, it is not rare to find command center operators working with multiple LCD monitors simultaneously. Since our consoles are built to integrate a cable management system, we often get asked about the recommended maximum length of VGA, HDMI, and DisplayPort cables. In this article, we will go over some important things to consider when using DisplayPorts.




DisplayPort Definition:


DisplayPort was developed by the Video Electronics Standards Association (VESA) to replace previous analog cable technology such as VGA. DisplayPort transmits information by sending data packets similar to how USB and Ethernet connections work. The technology was well received by consumers as it can keep a high image resolution without requiring multiple pins which integrates easily to newer laptops, televisions and computers.


What is the recommended length of a DisplayPort?


As with other cables, the length has a direct impact on the quality of the information being transmitted. The greater the distance, the higher the risk of transmitting a lower image and sound quality. In some cases, complete data loss. If we think of this in a mission-critical setting, it quickly becomes apparent why cable lengths are an important consideration. Facilities in this sector often operate 24/7 and require real-time information in order to make decisions. According to Dell, the maximum recommended cable length to ensure optimal performance is 1.8 meters (6 feet). Using anything beyond that increases the chances of the risks mentioned previously. However, it is still possible to use longer DisplayPorts without being affected by those risks.


If for some reason you need to use a long DisplayPort, there exist some options to do so without affecting the quality of the signal. For instance, using high-quality cables shielded with foil and braid layers to protect it from EMI/RFI interference. Another option for applications requiring 100+ ft. DisplayPorts is using signal boosters such as the B121–000. This device will even support monitor resolutions of up to 2560x1600 (60Hz) and 1920x1200 (120Hz).


In conclusion, DisplayPort cables are ideal for video presentations, point-of-sale displays, classrooms and other applications requiring high-resolution video and multi-channel audio. DisplayPort can be used with most recent computers /laptops, CPU monitors, projectors and HDTVs.


About Sustema


Sustema manufactures specialized furniture for mission-critical environments such as command centers, control rooms, emergency communication centers and more.

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