Greetings everyone, I was wondering if anyone has already worked this out. The test under question measures the sound power level generated by fan trays or other noise producing structures in Central Office type telecom equipment. ETS 300 753 Acoustic noise test calls for the test to be carried out under 23+-2 deg C ambient conditions. Apparently the results from this test are the "official" results from which one would derive a rating for the product. The standard then asks that the test be repeated at the maximum operating temperature (i.e. 50 deg C). Is this second test at elevated ambient for informational purposes only or does it factor into the rated sound power level for the product?
Thanks in advance for any help Dave Heald ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
