Allion Labs / Paul Chou
With the rapid development of technology, there is a growing demand for high-speed audio and video data transmission. The connectors and cables used by our daily public are gradually upgrading. For example, the specification of HDMI has evolved from HDMI 2.0 to HDMI 2.1, and the transmission rate is enhanced from 6.0 Gbps to 8.1Gbps. Moreover, the speed of USB 3.2 Gen 2 also reached 10 Gbps, and it is expected that USB4 will reach 20 Gbps as well, which is the same as Thunderbolt3.
Video Electronics Standard Association; VESA has released the DisplayPort High Bit Rate 3 ( or DisplayPort 1.4 ) early certification program in January 2017. Authorizing Allion to provide DisplayPort 1.4 Certification and testing service; as an ATL for VESA, Allion will introduce the specifications and details of DisplayPort 1.4 Certification and testing service.
DisplayPort 1.4 ( or in short DP 1.4 ) would be the latest specification presented from VESA, compared with DP1.2 the new DP1.4 incorporates the Display Stream Compression; DSC function. Hence, with a high compression rate of 3:1, it is able to support a higher resolution and refresh rate under the same bandwidth. Besides DSC, DP 1.4 includes Forward Error Correction, HDR meta transport in this new update. Therefore, allowing for better performance in video output.
As more and more of us rely on smart devices to lubricate and ease the perpetual motion of our daily activities, we may have alluded or taken for granted the safety and precautionary measures hence provided by industries and manufacturers.
Recent media coverage regarding the safety of consumer electronic devices, have caught our attention; especially when many of our gadgets today are manufactured and tested by the same institutions. Hence, possibly causing flaws or biased judgment during the certification process. Therefore, when another related incident from a product which, was born via this “α & Ω solution”. We as a responsible and professional institution had to ask ourselves the dodgy question we’ve all known for a while by now. “Is a one way arrangement from drawing board to certification and manufacturing, really what we want?” However, in defense of multinational conglomerates one must understand the implications and benefits of having everything wrapped up together as a single package. The following, will endeavor to shed light on these issues and possible alternatives that may further and promote better safety and scrutiny towards certification and compliance standards.
In view of high-frequency signal, mechanical properties, electrical properties and environmental factors that change in the performance of cables and connectors, developers need a complete package of professional laboratory tests and certification programs to ensure the products that can meet the quality conditions and can perfectly show the functional characteristics. In this article about validation technique, Allion experts will introduce different specifications of USB and emphasize on certification. It will also concentrate on products with different interfaces such as SAS 4.0, PCIe’s latest specification of OCuLink interface, and fiber optic cable AOC (Active Optical Cable) and will explain each interface’s characteristics. In addition, we will also introduce some equipment and testing content focusing on electrical test, mechanical test, and environmental test.