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Hi Lennart and all, Regarding your comment 54: I believe that we can’t change it as you suggested: My arguments are: Yair:
1. It is part of Objective (implicit).
3. We need to meet local and national EMI codes for PSEs and PDs with their cables when they are powered or not.
4. The value of this text is that the common mode ripple and noise specified in Table 145-16 and Table 145-29 are not sufficient to meet EMI and much lower values are required. 5. It is specified for all IEEE systems and subsystems. 6. If the text is not clear we can clarify it but not delete it. I also talked with Geoff Thompson about this comment and I am attaching his response: The text that Lennart wants to fiddle with is as old as the hills, e.g. see: 14.7.3 Environment 14.7.3.1 Electromagnetic emission The twisted-pair link shall comply with applicable local and national codes for the limitation of electromagnetic interference. so any change to that text will run up against the rest of 802.3 since it is precisely the same requirement as we have for twisted pair MAUs in general. 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 |