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Re: 10/100/1000 "4578" power

To: "Larry Miller" <ldmiller@xxxxxxxxxxxxxxxxxx>, JR Rivers <jrrivers@xxxxxxxxx>, "Rick Brooks" <ribrooks@xxxxxxxxxxxxxxxxxx>, stds-802-3-pwrviamdi@xxxxxxxx, JR Rivers <jrrivers@xxxxxxxxx>
Subject: Re: 10/100/1000 "4578" power
From: R karam <rkaram@xxxxxxxxx>
Date: Mon, 15 May 2000 09:50:54 -0700
In-Reply-To: <3.0.32.20000515065855.00c4c980@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Sender: owner-stds-802-3-pwrviamdi@xxxxxxxx


 Hi Larry

Please clarify the statement below.


>
>I hope that it was shown that sending power over the signal pairs raises
>the technical difficulty bar by the amount of isolation between pairs. (15
>dB at least)
 

are you saying that because power is on the used signal pairs, I get
possibly up to 15db of noise injected on there, what about the supply
filter that insures DC- Pure DC on the wire, I am not clear on this?

thank's
roger

References:
- Re: 10/100/1000 "4578" power
  - From: Larry Miller

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