Author Topic: USB2.0 cable requirements  (Read 490 times)

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Offline IconicPCBTopic starter

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USB2.0 cable requirements
« on: December 05, 2019, 10:34:55 pm »
A USB 2.0 camera is located on a robotic arm. It is connected to a USB port via a non standard  ( highly flexible )  USB cable  due to continuous movement of the arm.

In general are there specific electrical requirements the USB cable has to meet ( say pF/unit length between conductors, nH/ unit length etc )
 

Offline IconicPCBTopic starter

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Re: USB2.0 cable requirements
« Reply #1 on: December 05, 2019, 10:59:01 pm »
D+ and D- form a twisted pair transmission line with differential characteristic impedance of 90 +/-15% ohm .
 


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