A question regarding the Universal Serial Bus (USB) Specification. USB spec. 1.0 required the cable shield at the peripheral end to be DC isolated from the chassis; ie, it could be terminated only through a capacitor(s). That requirement always seemed strange for a cable with a max. length of 5 meters. And it has caused us some trouble with EMI.
Now, if I'm reading it correctly, USB 1.1 has quietly removed that restriction and allows the shield to be grounded to the chassis at both ends (as it should have been from the start!). Is this correct? Thanks, Jack Cook, EMC Engineer, Xerox Corp. <jack.c...@cax.usa.xerox.com> --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to majord...@ieee.org with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to ed.pr...@cubic.com, jim_bac...@monarch.com, ri...@sdd.hp.com, or roger.volgst...@compaq.com (the list administrators).
