Thread Links Date Links
Thread Prev Thread Next Thread Index Date Prev Date Next Date Index

RE: it's time for another poll




Rick,
Attached our votes below.
Regards
Yair.


Darshan Yair
Chief  R&D  Engineer 
> PowerDsine Ltd.  -  Powering Converged Networks
> 1 Hanagar St., P.O. Box 7220
> Neve Ne'eman Industrial Zone
> Hod Hasharon 45421, Israel
Tel:  +972-9-775-5100, Cell: +972-54-893019
Fax: +972-9-775-5111
> E-mail: <mailto:yaird@xxxxxxxxxxxxxx>.    
> http://www.powerdsine.com
> 
> 
> -----Original Message-----
> From:	Rick Brooks [SMTP:ribrooks@xxxxxxxxxxxxxxxxxx]
> Sent:	ג, נובמבר 21, 2000 5:23 PM
> To:	stds-802-3-pwrviamdi@xxxxxxxx
> Subject:	it's time for another poll
> 
> OK, 
> we have decided one thing, but there are many other items that we have not
> really agreed to yet. 
> 
> I wanted to take a non-binding poll to see what people are thinking. 
> In order to facilitate this, I have compiled several PD front end
> schematics for your enjoyment. 
> I show the needed polarity diodes and the under-voltage lockout circuit,
> followed by some kind of power supply. 
> The under-voltage lockout circuit could close the series load FET at the
> same time as opening the signature FET, 
> but that is of course optional. 
> 
> These circuits help to illustrate how many components are needed for the
> various options. 
> Please look at this file before proceeding: 
> <http://www.ieee802.org/3/af/public/documents/pd_configs1.pdf> 
> 
> 
> **************************************************************************
> *********** 
> Please reply with you votes, or comments on these questions: 
> 
> 
> 1) Should we accommodate crossover cables, i.e. take either polarity of
> power?  (more cost in the PD) 
> NO
> 
> 
> 2) Should we require having a non-linear component in series with the
> signature resistor for discovery? 
> NO
> 
> 
> 3) Should we pick one and only one pair at this time to send power? 
> NO
> 
> We agreed to either pair  or  45,78 at Mid Span and 12,36 at integrated
> Switch solution.
> If yes, then pick one:    1236_____     4578_____ 
> 
> 
> 4) Should we specify power for both pairs, with the second pair being
> optional for higher power? 
> NO  
> 
> 
> 5) Should we leave open the possibility of using the second pair for power
> in the future? 
> YES
> 
> 
> 6) If we were to allow power on both pairs, 
> should we make discovery on each pair independent of the power on the
> other pair? 
> YES
> **************************************************************************
> *********** 
> 
> This poll is certainly not official or binding, I'm just trying to get
> some discussion and opinions going. 
> 
> thanks, 
> - Rick 
> 
> 
>