What Are SDI Cables, and When Should You Use Them?

If you have used any modern AV device over the last decade or two, then you have likely seen an SDI cable. The oldest versions of this handy audio-visual connector date back to the late 1980s, and they remain a staple today. But for anyone unsure what SDI cables are and when to use them, the article below will provide answers. Keep reading to learn about the different types and uses of serial digital interface cables. 

Kanex Pro is the premier online resource for adapters, A/V converters, and other visual accessories. 

About SDI Cables

These dynamic cables are flexible adapters that can work to convert both audio and video. Most SDI types can send and receive audio/visual signals. Of course, various types serve more specific needs depending on what you are doing with your setup. SDI types include: 

Standard Definition

The original SDI cable is used to send and receive audio and video in compressed form. It used to be the go-to cable for devices with a standard video resolution of 480i to 576i. If you need something that will convert higher audio and visual qualities, then you may need a more updated SDI option.

High Definition

Developed for higher resolutions in the modern age, HD cables are for just about anything made in the last decade. These powerful cables are suitable for anyone looking to process video resolutions between 720p and 1080i.

12 Gbps SDI

This is one of the most advanced types of SDI cables on the market today. It provides optimal speeds for both audio and video transmission. This cable typically processes up to 2160p video and has a smooth 60 FPS framerate that stays consistent the whole time. 

How SDI Cables Work

These cables were originally designed as a protocol technology. This protocol acts as a communicator between two devices looking to transmit or receive compressed A/V files. Using coaxial connections, they bring the devices together and offer instant transmittal. Many video devices, such as gaming computers, theater screens, and projectors, can be seen with SDI cables because they are a reliable connection source. 

SDI Vs. HDMI

You may think that the way SDI cables work sounds a lot like the HDMI cable. And you would be correct! They are very similar. So why would someone choose an SDI cable over one of the many HDMI cable options? 

HDMI Cables

Though SDI is popular, HDMI cables are almost more widespread. This means that you will likely find HDMI cables and ports already included with or attached to your commercial items. The average consumer uses HDMI cables on a daily basis to connect TV screens to smart TV boxes, computers to monitors, and even laptops to phones. When it comes to speed and transmission rate, HDMI is typically just as reliable as any SDI option. 

SDI Cables

SDI cables are usually the cord of choice for professionals who need the absolute best for their video devices. Filmmakers or large businesses with video equipment may be more likely to use SDI cables as the most trustworthy type of connection. SDI cables may also be preferred because of their distinct locking mechanism. The coaxial cables can lock into place, making it very difficult for the connectors to become loose.

Professional SDI Cables Available at Kanex Pro

At Kanex Pro, you can find high-grade SDI cables, coaxial cables, HDMI cords, and other reliable connectors. Our online store provides a huge inventory of audio-visual equipment to suit your tech needs. Contact us today so we can help you find the best cable for your setup.