What is sdi

Blackmagic Design has the same in its Decklink series of capture cards. There are, of course, a lot of other manufacturers who also build 12G SDI solutions in addition to those mentioned above. One of the most important criteria for video standards is image quality. However, the SDI standards have a few benefits up their sleeves, compared to the others. Cable lengths Being able to distribute a video and audio signal over longer distances is one of the most prominent benefits of SDI.

The different serial digital interface standards all use one or more coaxial cables with BNC connectors. With optical fiber as the choice of transmission cable, you can send a high end 4K or 8K signal over impressively long distances.

Optical fiber support Manufacturers are gearing up for the next generation 12G-SDI with several products already on the market — pushing the boundaries for what is expected for transmission speeds and distances.

As an example, Blackmagic Design has introduced a converter named Teranex Mini , which has a built-in optical fiber connector. What are the benefits of a BNC connector, compared to its rivals? One of the chief advantages is that the BNC connector is a close-fitting connection which is physically locked when attached. The male connector has a pin, fitting into the main wire, which is further secured in place with an external ring that locks in position. They were mounted on the side of the TV, and the pressure of the cable pushing down gravity, you know!

Uncompressed video and audio Being able to transmit uncompressed video is not a game-changer as you can do that on the other video standards as well.

But the SDI family also has the added advantage of offering embedded audio. Embedded audio Not all display standards support embedded audio. The protection requires a handshake between the source device and the output device, which results in frequent problems no signal, signal drops, etc even in professional installations. Each of these is designed for a specific bit rate and video format. In other words, each can transfer an uncompressed video signal at a specific resolution. The higher the resolution and frame rate the camera can send to an external monitor, the more likely it will have a faster SDI-connection.

It backward compatible, so you can use it with slower standard monitors as well. That data then has to be interpreted in the recorder and encoded within the Atomos Recorder so that you can see an image on your screen. The reason is that SDI consists of a single strand of cable that works as a pipeline for serial digital data. This makes it more stable over longer cable runs and less prone to interference.

First of all, SDI is expensive. You pay a lot of money for the co-ax cable compared to other solutions such as Wi-Fi or fiber. And the faster the SDI-connection, the shorter the cable you can use for a secure transfer of data. As a rule of thumb, you can expect about half the cable run when you upgrade one step to a faster standard. If you move to fiber connections, you can run the cables much longer. But this is getting into broadcast territory and is beyond the scope of this article.

You must be logged in to post a comment. Remember me Log in. Lost your password? Learn more about Optcore SDI video transceiver solution. Introduction to DWDM. Geo says: 8k 10bit HDR 60hz uncompressed require 60 Gbps bandwidth! Optcore says: Thank you for the correction, we will follow and revise it accordingly.

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