Hello Group, I have a couple of questions regarding the minimum PC configuration when testing a USB device such as a mouse and the minimum testing requirements. CISPR 22 contains the following: For a personal computer or a personal computer peripheral, the minimum configuration consists of the following device grouped and tested together: a) personal computer; b) keyboard; c) visual display unit; d) external peripheral for each of two different types of available I/O protocols, such as serial, parallel, etc.; e) if the EUT has a dedicated port for a special-purpose device such as a mouse or joystick, that device shall be part of the minimum configuration. If my EUT is a USB mouse, and I use a laptop as the host PC and the laptop doesn't have serial or parallel ports, how does one address the minimum configuration? There are total of 3 USB ports, 1 video port, and 1 Ethernet port available on the PC. Also, for the testing (CISPR 22 & CISPR 24), I would like to only do radiated emission, ESD, and radiated immunity since the EUT is USB powered and the cable is less than 3 meters in length for any I/O tests. Is this legally allowed? My associates want to reduce testing costs so they want to avoid AC powerline testing and I/O cable testing. In my engineering experience, I have seen USB devices get affected when EFT is applied on a host PC powerline. Would RRL (Korea) allow the same policies as above? I will need to get KCC approval as well. We all know that they can be strictly by the book with no tolerance for deviation from the standard. Any documented references for allowing or not allowing the above issues would be appreciated. Thanks, Tim Pierce TAP Engineering
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