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Hi Chad, I thought about this comment and I am proposing simpler solution that in my opinion will be good enough. Currently the text looks like this: “A PSE shall maintain an output voltage no less than VTran-2P
for transient conditions lasting more than 30
μs and less than 250
μs, and meet the requirements of 145.2.10.9.
[SPACE] Transients less than 30
μs in duration may cause the voltage at the PI to fall below VTran-2P.
See 145.3.8.6 for PD transient requirements. Transients lasting more than 250
μs shall meet the VPort_PSE-2P
specification.” The problem is if I read the above text: I see a clear requirement on the first paragraph addressing the requirements for 30usec-250usec.
The second paragraph starts with informative text regarding transients below 30usec that invite the question
“OK what to do with it, what is the requirement”
and then you have again a clear requirement for behavior above 250usec. If I make small editing change such as follows (append both paragraphs): “A PSE shall maintain an output voltage no less than VTran-2P
for transient conditions lasting more than 30
μs and less than 250
μs, and meet the requirements of 145.2.10.9. Transients less than 30
μs in duration may cause the voltage at the PI to fall below VTran-2P.
See 145.3.8.6 for PD transient requirements. Transients lasting more than 250
μs shall meet the VPort_PSE-2P
specification.” Now if I read this: I see 1st requirement. Clear informative part. 2nd requirement. What is your inputs on this proposal? Does it make sense that it is simple change just remove space and merge both paragraphs so it will not look like two different paragraphs that the 2nd
one starts new requirement which is not the intent. Yair
Darshan Yair Chief R&D Engineer Analog Mixed Signal Group Microsemi Corporation 1 Hanagar St., P.O. Box 7220 Cell: +972-54-4893019
E-mail: <mailto:ydarshan@xxxxxxxxxxxxx>. To unsubscribe from the STDS-802-3-4PPOE list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=STDS-802-3-4PPOE&A=1 |