Hello, I would ask for some information about Emission testing of a desk top PC with a USB bus. In the standards (EN55022 and FCC/ANSI C63.4) is given a PC test set-up and the explanation that on all on connections a device must be connected in normal use. My question is how must be tested a PC with USB connections. I could imagine that a passive USB device (for instance a mouse) is connected to one USB port. But is this according the EMC standard, because on a USB bus can go communication signals till 12 Mbps or even more and this has of course influence on the EMC emission behaviour of the PC set-up. Which (black box) USB device could be use as a standard USB device for EMC emission measurements.
Thanks in advance. Jan Mobers --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).

