RE: Exercising test sample during emissions testing

The H pattern was to increase monitor emissions; turning the electron beam on and off periodically was a surefire way to raise emissions. I've seen a monitor with H's make a computer _beside the EUT_ test fail conducted emissions even though turned OFF. Nowadays a Windows (etc) halftone pattern is

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for UL1439 testing luck, Brian - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ T

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Advanced Energy(r) develops innovative power and control technologies that drive high-growth, plasma thin-film manufacturing processes worldwide, including semiconductors, flat panel displays, data storage products, solar cells, architectural glass, and other advanced product applications. We have

Re: Exercising test sample during emissions testing

Thanks to all who responded on this subject! Ken Javor - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.o

RE: Exercising test sample during emissions testing

Per CISPR 22:2006 Annex G (informative): Settings: worst case, positive or negative video, and size-char/line for the maximum number of characters/screen. "... For monitors with graphics capabilities, a pattern consisting of all scrolling Hs should be displayed. For monitors with text only capabil

Re: Exercising test sample during emissions testing

In message , "Tarver, Peter" writes >The only present day standard (that I've seen) that comes right out and >says to use an H pattern is CISPR 22:1997. I don't see the scrolling H >as a specific requirement in EN 55022:1998. Because the latter is based on CISPR22:1994, and becomes invalid i

RE: Exercising test sample during emissions testing

Hi Ken, Check in ANSI C63.4 for (at least for US) testing requirements. Para 11.1.3 lists the operational conditions for VDU or monitor. Best Regards Charles Grasso Compliance Engineer Echostar Communications Corp. Tel: 303-706-5467 Fax: 303-799-6222 Cell: 303-204-2974 Pager/Short Message: 3032

RE: Exercising test sample during emissions testing

> From: Ken Javor > Sent: Wednesday, June 06, 2007 9:42 PM > > A long time ago, when DOS was the PC operating system, I seem > to recall that a PC undergoing emissions testing was supposed > to continually write the character "H" to the CRT display. > > What is the requirement today under CISPR

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Exercising test sample during emissions testing

A long time ago, when DOS was the PC operating system, I seem to recall that a PC undergoing emissions testing was supposed to continually write the character "H" to the CRT display. What is the requirement today under CISPR or other emissions testing requirements to ensure that the PC is being fu