Wednesday, October 2, 2013

USB3 cable lengths

USB3 is attracting attention from machine vision users, and for some cable length is a concern. Back in August (“USB3 Vision Clarification”), I said I understood the maximum length to be 3m, but Andy Wilson has provided an update.

If you read “USB 3 Vision: Extending camera to computer interfaces” you’ll learn that “Alysium-Tech has tested passive USB 3.0 Vision industrial cables … running at distances of up to 8m.”

That’s helpful, but it may not be enough. If that’s the case, Andy suggests you use an active USB3 cable, such as those available from Components Express or Icron. Those, apparently, will get you up to 100m, using fiber, which should be enough for most users.

If you need longer, there are other camera interface formats.

No comments: