I found a section of Japan MITI-JEIDA documentation that may be of interest.
This is probably not the latest information but provides an indication of the thought process. Document is MITI, Division 6, No. 378, dated Oct. 3, 1994. Author is Seija Murata, Director of Public Utilities Department. para 5.1 (7), Requirements When a hybrid piece of equipment or system consists of pieces or equipment belonging to different classes, even when each piece of equipment does not have its own power supply plug, measurements may be performed for each individual piece of equipment, and the limiting values for each respective class applied. I believe the 'may be performed' is the option of the test house, not the device manufacturer. If Patrick must market his product in Japan this may have direct impact. Also so much of the JEIDA detail requirement seems based on IEC-1000 work that there may be a similar statement somewhere. Hope this helps--- bo...@vnet.ibm.com