The Key to Video Cable Performance



 



Belden Professional Video Cables and Connectors




Virtually all TV broadcasters around the world have gone digital. Even Hollywood has converted from film to digital images. While some of these cameras record the data on hard drives or SSD (solid-state drives), ¬†at some point you’re going to send this data, those digital images, from Point A to Point B. If you want to carry the hard drive or SSD from place to place, that’s fine (so-called “sneaker net”) but it is time-consuming and inefficient. Why not put that signal on a cable to move it from place to place? That’s what most broadcasters do. And, while you could do this on fiber, converting from electrons to photons and back again at the other end, the economical and simple way is still over copper cable, most commonly coax cable.

1694A

The photo to the right is Belden 1694A, the world’s most popular video cable. It’s a good compromise between size, distance, and cost. It is easy to put on connectors, especially the one-piece compression connectors that Belden now offers. (Our current record is two connectors in 33 seconds.) And these connectors, and the 1694A cable, can carry virtually any video signal you might wish to use including analog, 4×3 digital (SD-SDI), high definition (HD-SDI) and even 3gig (1080p/50 or 1080p/60).

The only thing you have to consider is how far the cable can go. Here’s a chart showing the recommended distance for 1694A and all of our other digital cables. Read more »

In Defense of Tinned Copper

Oxidized-Copper-Statue-of-LibertyI spend a lot of time in the fancy cable section of Belden. These are cables for high-frequency applications, such as digital video coax, or 10-gigabit data cables. These cables all use bare copper conductors. On the other hand, if you look at the Belden catalog from the 50,000 foot view, you will see a whole lot of cables we make use tinned copper. If you’re an ancient engineer or installer (like me) you came from a time when tinned copper conductors were pretty much everything. Products like 8451 and 9451 and almost any analog audio cables are all tinned copper. Go back to the coax cables from long ago, and many of them are tinned copper. So what happened? And why is Lampen bringing up this issue now? Very simple. Read more »

On Twitter