I am running a projector from a laptop and the distance is 50 feet from the laptop rack to the ceiling mounted video projector. SVGA and USB are required to do what I require to the projector from the laptop (Toshiba)
Since no one has a 50' USB, I ran a #432 cable. (6 Pair each pair indivigually shielded). I am going "wire to wire" for pinout.
I understand that a USB contains the following:
+/- Voltage
Digital I/O
Questions are this:
Will 50 feet work?
Is their one cable of the bunch that needs indivigual shielding?
This will be used in a moderate to low RF environment...not really noisy.
Thanks in advance
Comments
Hiya Prolab; I know you can have a USB cable to up to 80 feet, b
Hiya Prolab; I know you can have a USB cable to up to 80 feet, but dunno where you can buy one that long, there is a place in WPB you can make it to order: Universal PC (In Lake Worth, right by the Turnpike exit) Universal PC - 7753 Lake Worth Rd. • Lake Worth, FL 33467 Tel: (561) 968-4488 Hope this helps !! -Steve ;)
http://www.usb.org/faq/ans5 "In practice, the USB specific
http://www.usb.org/faq/ans5
"In practice, the USB specification limits the length of a cable between full speed devices to 5 meters (a little under 16 feet 5 inches). For a low speed device the limit is 3 meters (9 feet 10 inches)."
"Q3: Why can't I use a cable longer than 3 or 5m?
A3: USB's electrical design doesn't allow it. When USB was designed, a decision was made to handle the propagation of electromagnetic fields on USB data lines in a way that limited the maximum length of a USB cable to something in the range of 4m. This method has a number of advantages and, since USB is intended for a desktop environment, the range limitations were deemed acceptable. If you're familiar with transmission line theory and want more detail on this topic, take a look at the USB signals section of the developers FAQ."