USB (cable) problems
Posted: Wed Mar 09, 2016 12:43 pm
Hi,
Some of our customers are experiencing problems with the six V120:Slim cameras we are using in our custom bicycle analysis system.
Windows (most have upgraded to windows 10, but some use 7 or 8.1) seems to, sometimes, have trouble recognizing the cameras when plugged in (analysed in Device Manager). For most, the success rate is higher when plugging the cameras in one by one and waiting inbetween.
The setup for our system consists of two bars with:
- three V120:Slim cameras, connected to a powered USB hub (http://us.dlink.com/products/connect/7-port-usb-2-hub/)
- a USB extension cable from the USB hub to the PC
The problem seems to occur more when using longer USB extension cables. We don't use cheap cables that are non-powered and longer than they should be:
- we have unpowered 4,5 meter cables. They almost never cause problems
- we have 10 meter cables which use two USB connections instead of external power (and claim to work as good as externally powered ones)
- we have 15 meter cables which use external power
Could the problems be caused by the extension cables? If they work as stated and are correctly powered, could they still cause issues? I guess most motion capturing setups have even longer distances between the HUBs and PC?
We don't see these problems when plugging in webcams for example.
I also saw a known problems with USB 3 ports, could that be the problems for us? http://help.naturalpoint.com/kb/article ... 3-0-issues
Kind regards,
Jeroen
Some of our customers are experiencing problems with the six V120:Slim cameras we are using in our custom bicycle analysis system.
Windows (most have upgraded to windows 10, but some use 7 or 8.1) seems to, sometimes, have trouble recognizing the cameras when plugged in (analysed in Device Manager). For most, the success rate is higher when plugging the cameras in one by one and waiting inbetween.
The setup for our system consists of two bars with:
- three V120:Slim cameras, connected to a powered USB hub (http://us.dlink.com/products/connect/7-port-usb-2-hub/)
- a USB extension cable from the USB hub to the PC
The problem seems to occur more when using longer USB extension cables. We don't use cheap cables that are non-powered and longer than they should be:
- we have unpowered 4,5 meter cables. They almost never cause problems
- we have 10 meter cables which use two USB connections instead of external power (and claim to work as good as externally powered ones)
- we have 15 meter cables which use external power
Could the problems be caused by the extension cables? If they work as stated and are correctly powered, could they still cause issues? I guess most motion capturing setups have even longer distances between the HUBs and PC?
We don't see these problems when plugging in webcams for example.
I also saw a known problems with USB 3 ports, could that be the problems for us? http://help.naturalpoint.com/kb/article ... 3-0-issues
Kind regards,
Jeroen