With
various groups making plays for their preferred new standard – USB
3.0, CameraLink HS and CoaXPress – camera interfaces are in the
news of late. Everyone talks about data rates and cable lengths -
I’ve done my part, with “King
of the (camera interface speed) hill”
and “Everything
you ever wanted to know about USB3.0” – but writing in the
Adimec blog, Gretchen Alper offers another factor to consider: the
cost of the cables. (“How
to save cabling costs with new machine vision interfaces”
August 29th,
2012.)
Now
I knew that CameraLink cables were expensive, but I hadn’t
appreciated just how expensive in comparison to GigE, FireWire, USB
3.0 and CoaXPress. (Read Gretchen’s blog post to see the actual
numbers.) CoaxPress is of course just plain old co-ax cable, which is
why it’s so cheap. As backers of this new standard, Adimec aren’t
exactly neutral, so I would expect them to have done their best to
‘spin’ the cable cost issue, but even so, the numbers are pretty
startling.
I
wonder if this might change your choice of interface next time you
spec out a system?
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