Grant - One of the main prooblems that I can see will be with the ISNs (networks used to provide a reference common mode impedance to ground for the signal linethat are required for signal lines. Their construction will, for some data rates, corrupt the data and prevent the interface from operating.
Other concerns that spring to mind include the termination of shielded cables to the ground plane in order to measure the conducted emissions on ports with shielded cables. Without the spec in front of me I can't remember what the valu of the resistor should be. Finally - the length of time to perform tests. If you have a 16-port device, the time taken to measure the emissions on each port in turn and the numner of ISNs required would cost lots of $$$ in time and equipment. Mark Mark Briggs [email protected] --------- 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).
