ETSI ETS 300 753 (downloaded for free at
http://pda.etsi.org/pda/queryform.asp)
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: McInturff Gary [mailto:[email protected]]
Sent: Friday, April 13, 2007 10:23 AM
To: Finlayson Joe-G3162C; [email protected]
Subject: RE: NEBS GR 1089 Issue 4
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
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