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EMC Certification for Portable Laptop - Research Paper Example
Author : cletawyman
Pages 7 (1757 words)
A portable laptop was tested using special test software called "H" patterns, which exercises all external Input/Output (I/O) ports as well as the internal storage media by writing and reading a continuous stream of "H" characters. A pattern of continuous stream-scrolling black "H" on a white background was written to display…
Photos of the portable laptop (commonly also known as EUT = Equipment under test, for EMC testing requirements) is as shown below.
The equipment conforms to the requirement of CISPR 16-1, CISPR 16-4-2, ANSI C63.2 and other required standards. Calibration of all test and measurement, including any accessories that may effect such calibration, is checked frequently to ensure the accuracy. Adjustments are made and correction factors are applied in accordance with the instructions contained in the respective manual based on lab accreditations such as FCC (602285)-USA, VCCI (Japan) and ISO/IEC (170025)-CNAS agencies (Refer to Lab Accreditations Table at end of report). There were no special accessories used during these test and there is no EUT modification or test standard deviation.
Prior to taking the formal emissions data collected in this report many hours of pre-testing have been performed. The selection of the worst case system documented in this report was based upon this pre-testing.
The portable laptop system (EUT) was set up as per the test configuration to simulate typical usage per the user's manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 metres is used and is placed on the ground plane as per EN 55022.
Associated equipment, if needed, was placed as per EN 55022. ...
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