"tony hague (SRI)" wrote:
>
> I need a ~10M long USB connection, for which purpose
> I have been given an active extension cable, which
> should do the trick. A Philips 'Toucam' is on the end
> of it.
>
> Trouble is, it doesn't seem to work properly. If I
> boot up, load the relevant USB modules, the camera
> is not seen. If I then unplug the extension cable
> and plug it back in again, the camera is then detected
> and works normally.
Any log entries?
> (*) As an aside, everything seems to work OK with the
> camera plugged in via just a long, passive, extension
> cable. The USB specs seem really negative about pushing
> your luck with overly long (>5m) cable lengths, but
> I'd welcome comments on how important the 5m limit
> really is ...
http://www.usb.org/developers/data/cablew~1.pdf
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