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Indeed, the 0 Ohms point indeed cannot result in anything but 0V.
If we try to specify a minimum (say 1 Ohm) we create a small gap.
Given that 0 Ohms is easy to meet, I also would say this isn't an issue.
Kind regards,
Lennart
On Thu, 2018-04-05 at 18:02 +0000, George Zimmerman wrote:
While what you say is true (0 ohms implies 0 volts by definition), i don’t see a problem, except that if you create an idealized (not practical) zero-ohm resistance measurement, you would meet the requirement....
George A. Zimmerman, Ph.D.
President & Principal Consultant
CME Consulting, Inc.
Experts in PHYsical Layer Communications
1-310-920-3860
George@xxxxxxxxxxxxxxxxxxxx
From: Peter Johnson <peter_johnson@xxxxxxxxx>
Sent: Thursday, April 5, 2018 9:37:39 AM
To: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_4PPOE] Backfeed presentation
Lennart:
Does this make sense ?
Change 145.3.8.8 as follows:
…the voltage measured
across the PI for on
the other Mode with
any resistance of 0
to 100 kΩ
connected across that other Mode shall not exceed Vbfd
as
defined in Table 145–29.
I would think 0 ohms would guarantee zero volts.
Regards,
Pete Johnson
Sifos
From: Lennart Yseboodt [mailto:lennart.yseboodt@xxxxxxxxxxx]
Sent: Wednesday, April 04, 2018 11:46 AM
To: STDS-802-3-4PPOE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_4PPOE] Backfeed presentation
Made a correction in the baseline, "a resistance" vs "any resistance".
On Tue, 2018-04-03 at 23:36 +0200, Lennart Yseboodt wrote:
Some thoughts on backfeed and suggested changes to spec for the adhoc tomorrow.
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