If you go back to issue 2 for individual equipment the distances are 1500 mm above the floor and 600 mm from the face of each equipment. For major systems the height is the same but the horizontal measurements are are at the midpoint of each on third sections within all within all equipment aisles and cross aisles. That puts you at the center of the aisles from the meter to equipment.
But this is issue 2 not 4 – and it’s sound pressure level not sound power being measured there. I believe the ETSI equipvalent documents had sound power measurements but I’ve forgotten the reference number Gary _____ From: [email protected] [mailto:[email protected]] On Behalf Of Finlayson Joe-G3162C Sent: Friday, April 13, 2007 6:20 AM To: [email protected] Subject: RE: NEBS GR 1089 Issue 4 Richard, The acoustic noise requirements are called in GR-63 Issue 3 as opposed to GR-1089 Issue 4. The test methods, as specified in GR-63 Issue 3, are contained in ANSI S12.10 as well as other ANSI S12.12 and S12.54. Have you reviewed these documents for the information you are seeking? Thx, Joe Joe Finlayson Tel: (508) 357-8273 Fax: (508) 357-8289 Email: <mailto:[email protected]> [email protected] Motorola, Inc. Embedded Communications Computing 46 Lizotte Drive Marlborough, MA 01752 USA _____ From: [email protected] [mailto:[email protected]] On Behalf Of Stone, Richard Sent: Friday, April 13, 2007 9:04 AM To: [email protected] Subject: NEBS GR 1089 Issue 4 Group, In reading this for Sound Power in DB for Acoustic Noise, It doesn’t state the distance for the measurement device from the EUT in the 1089 document above, is it 1 meter? Also it states different DB levels based on location with or without operator present. Is there a consensus for location testing? Thanks Rich, Richard Stone Cantata Technology 75 Perseverance Way Hyannis, MA 02601 Ph. 508 862 3311 Fax 508 862 3020 www.cantata.com ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ - ---------------------------------------------------------------- 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 [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- 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 [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- 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 [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
