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Re: [8023-POEP] classification section intro text

Yair,
 
In case Geoff is not available, I can answer that; You may assert either a current or a voltage and measure the resultant voltage or current respectively.
 
Thus, Geoff's language is correct, although a minor typo is corrected below;
 
Hardware Physical Layer (HPL) classification occurs before power-on when the PSE asserts a specified signal onto the PI and the PD responds with an impedance representing one of a limited number of power classifications.
 
Regards,

Dan

From: owner-stds-802-3-poep@IEEE.ORG [mailto:owner-stds-802-3-poep@IEEE.ORG] On Behalf Of Darshan, Yair
Sent: Friday, October 19, 2007 10:22 AM
To: STDS-802-3-POEP@LISTSERV.IEEE.ORG
Subject: Re: [8023-POEP] classification section intro text

Goeff ,

 

The spec. specify current range for each class. Why you prefer impedance?

 

Yair

 

From: owner-stds-802-3-poep@IEEE.ORG [mailto:owner-stds-802-3-poep@IEEE.ORG] On Behalf Of Geoff Thompson
Sent: Thursday, October 18, 2007 8:56 PM
To: STDS-802-3-POEP@LISTSERV.IEEE.ORG
Subject: Re: [8023-POEP] classification section intro text

 

Chad-

Please change one sentence to be more precise:

From

Hardware Physical Layer (HPL) classification occurs before power-on when the PSE asserts a voltage onto the PI and the PD responds with a current representing a limited number of power classifications.

To

Hardware Physical Layer (HPL) classification occurs before power-on when the PSE asserts a specificed signal onto the PI and the PD responds with an impedance representing one of a limited number of power classifications.

Thanks

        Geoff


At 10:24 AM 10/18/2007 , Chad Jones (cmjones) wrote:

The text we are discussing in the AdHoc right now...
 

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