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IPeak-2P indeed depends on Rchan, in 2 ways.
First in Eq 33-10, IPeak depends on Rchan.
Second, KIPeak in Eq 33-12 also depends on Rchan.
Because this is so complex (and useless to optimize for), a 'simple' worst-case calculation is provided in the form of IPeak-2P-unb_max. This number is higher than IPeak-2P-unb and using this would automatically mean meeting peak unbalance requirements.
With regard to George's comment that the lowerbound template should not depend on Rchan... that has always been the case, since at least AT.
ICon also depends on Rchan for instance. Here it does make sense as it allows a PSE to optimize the power output to match with the channel losses.
From: Heath Stewart <00000855853231d4-dmarc-request@xxxxxxxx>
Sent: Friday, January 6, 2017 0:13
Subject: Re: [802.3_4PPOE] Rewrite of 126.96.36.199
We are noticing a few incongruities after looking at this longer.
1) Inadvertent change
"Alternatively, an over-margined value of IPeak-2P-unb, IPeak-2P-unb_max which is defined by Equation (33–14), may be used."
is incorrect. It creates an alternate definition of IPeak-2P-unb.
It used to create a new variable, IPeak-2P-unb_max, which happens to have a relationship to IPeak-2P-unb. We need to preserve the original wording. This term is only used to form Iunb.
"The worst case value of IPeak-2P-unb is IPeak-2P-unb_max which is defined by Equation (33–14)."
2) The lower-bound template as defined by IPeak-2P (by way of IPeak-2P_unb) now has a third dimension, Rchan-2P. This is not only strange but is at odds with the definition of Icon-2P_unb, which is a scalar.
Is this what we want?
On Wed, Jan 4, 2017 at 1:30 PM, Abramson, David <david.abramson@xxxxxx> wrote: