Hello John, Thank you for your comment. The only problem is that the BS EN55022:1998 that I order through Global Engineering Documents Service in Denver Colorado does not have this paragraph, only a blank space line a vertical line at the left end side.
Regards, At 12:55 PM 5/9/2000 -0600, Wagner, John P (John) wrote: > >When EN55022 was adopted, there were several "common technical >modifications" to CISPR 22. One of those changes was to delete subclauses >8.2.1, 8.2.2 and 8.2.3. > >In the EN, the following paragraph was added to 8.2 > >"The operational conditions of the EUT shall be determined by the >manufacturer according to the typical use of the EUT wilth respect to the >expected highest level of emission. The determined operational moed and the >rationale for the conditions shall be stated in the test report." > >In other words, the Europeans did not buy the rationale of C63.4, possibly >for good reasons. There are many terminals which are exclusively graphic >and their host units simply cannot produce the conditions called for in >CISPR 22. I think the EN makes sense. > >However, for worldwide products, we are now stuck with two methods. > >John P. Wagner >Lucent Technologies, Bell Labs >11900 N. Pecos St, Room 2F58 >Denver CO 80234 >email: [email protected] >phone: 303 538-4241 >fax: 303 538-5211 > >> ---------- >> From: Benoit Nadeau[SMTP:[email protected]] >> Reply To: Benoit Nadeau >> Sent: Tuesday, May 09, 2000 10:06 AM >> To: [email protected] >> Subject: Where is 8.2.1 is EN55022 ? >> >> >> Bonjour de Montreal, >> >> In CISPR22:1997 one can read in section 8.2: >> >> ... Any mechanical activities should be performed and visual display units >> should be operated as in 8.2.1. >> >> 8.2.1 Operation of visual display units >> >> If the EUT includes a visual or monitor, The following operating rules >> shall be used. >> >> - Set the contrast control to maximum. >> >> - Set the brightness control to maximum or at raster extinction if raster >> extinction occurs at less than maximum brightness. >> >> - For colour monitors, used white letters on a black background to >> represent all colours. >> >> - Select the worse case of positive or negative video if both alternatives >> are available. >> >> - Set the character size and number of characters per line so that >> typically the greatest number of characters per screen is displayed. >> >> - For monitors with graphics capabilities, a pattern consisting of all >> scrolling Hs should be displayed. For monitors with text capability, a >> pattern consisting of random text shall be displayed. If neither of the >> above apply, use typical display. >> >> The EUT shall be operated in the operating mode that generates the >> greatest >> level of emission while satisfying the above operating rules. >> >> >> In BS EN 55022:1998 one can read in section 8.2: >> >> >> ... Any mechanical activities should be performed and visual display units >> should be operated as in 8.2.1. >> >> | >> | >> | >> | >> | >> | >> >> ??? There is no section 8.2.1, although it is referenced in the text. >> >> What happen to 8.2.1? obviously it has been deleted, without editorial >> review, when CENELEC adopted CISPR22:1997. >> >> What is the rational behind this? Should visual display unit be configured >> as in CISPR22:1997 or is this field wide open? >> >> The CISPR22:1997 is quite similar to ANSI C63.4 requirements. Is this >> deletion some sort of denial of the ANSI method? >> >> What should visual display units (or graphic cards as in my particular >> case) do? >> >> Any comment will be helpful. >> >> Regards, >> >> >> >> ---------------------------------------------- >> Benoît Nadeau, ing. M.ing (P.eng., M.eng.) >> Conformity Group Manager >> Matrox >> Tel: (514) 822-6000 (x2475) >> Fax: (514) 822-6275 >> >> Chairman >> 2001 IEEE EMC International Symposium on >> Electromagnetic Compatibility >> Montreal August 13 to 17, 2001 >> ---------------------------------------------- >> >> ------------------------------------------- >> This message is from the IEEE EMC Society Product Safety >> Technical Committee emc-pstc discussion list. >> >> To cancel your subscription, send mail to: >> [email protected] >> with the single line: >> unsubscribe emc-pstc >> >> For help, send mail to the list administrators: >> Jim Bacher: [email protected] >> Michael Garretson: [email protected] >> >> For policy questions, send mail to: >> Richard Nute: [email protected] >> >> > >------------------------------------------- >This message is from the IEEE EMC Society Product Safety >Technical Committee emc-pstc discussion list. > >To cancel your subscription, send mail to: > [email protected] >with the single line: > unsubscribe emc-pstc > >For help, send mail to the list administrators: > Jim Bacher: [email protected] > Michael Garretson: [email protected] > >For policy questions, send mail to: > Richard Nute: [email protected] > > > > -------------------------------------------------------------------------- Benoit Nadeau, ing. M.ing. (P.Eng., M.Eng) Gerant du Groupe Conformite (Conformity Group Manager) Matrox <http://www.matrox.com/> -------------------------------------------------------------------------- 1055, boul. St-Regis Dorval (Quebec) Canada H9P 2T4 Tel : (514) 822-6000 (x2475) FAX : (514) 822-6275 Internet : [email protected], <mailto:[email protected]> ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
