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AW: [EFM] RE: Link Model




Hi Larry

Thanks for the files.  

That answers my question, i.e. which parameters were used rather
than how the calculations are made

All the best

Tom



-----Ursprüngliche Nachricht-----
Von: larry_golob@xxxxxxxxxxx [mailto:larry_golob@xxxxxxxxxxx]
Gesendet am: Freitag, 8. Juni 2001 18:49
An: Thomas.Murphy@xxxxxxxxxxxx; larry_golob@xxxxxxxxxxx;
efmoptics@listserv.excitehome.net; stds-802-3-efm@ieee.org
Betreff: [EFM] RE: Link Model

Tom,

The model does not take an entered distance and compute the required
parameters.  It works by computing losses due to many factors including link
distances.   Those factors will add and need to be balanced by the entered
value in for power budget (E9). Column W show the Margin (difference between
the total losses and E9) for the various distances.

Attached is a zipped version of models for the various distances and
splitter losses.

Thanks
Larry

-----Original Message-----
From: Thomas.Murphy@xxxxxxxxxxxx [mailto:Thomas.Murphy@xxxxxxxxxxxx]
Sent: Friday, June 08, 2001 9:22 AM
To: larry_golob@xxxxxxxxxxx; Thomas.Murphy@xxxxxxxxxxxx;
efmoptics@listserv.excitehome.net; stds-802-3-efm@ieee.org
Subject: AW: [EFM] RE: Link Model


Thanks,

My question however, also related to the actual values used.
For example, if I enter 20km into the 1300nm_SMF spreadsheet, then 
I don't get a result as several parameters are not real, e.g. Pmpn Pisietc.

Does this mean that the results presented were for 1310 nm operation etc?
The values on the OH's differ from those in the spreadsheet.

Tom


-----Ursprüngliche Nachricht-----
Von: larry_golob@xxxxxxxxxxx [mailto:larry_golob@xxxxxxxxxxx]
Gesendet am: Freitag, 8. Juni 2001 18:11
An: Thomas.Murphy@xxxxxxxxxxxx; efmoptics@xxxxxxxxxxxxxxxxxxxxxxx;
stds-802-3-efm@ieee.org
Betreff: [EFM] RE: Link Model

The model is available on the 10 GBE section of the IEEE Working Group
website. http://grouper.ieee.org/groups/802/3/ae/public/index.html

I used the Enhanced Gigabit Ethernet Link Budget Spreadsheet (Version
2)(which is attached) as the model for my brief presentation at the St.
Louis meeting.

Regards,
Larry Golob

-----Original Message-----
From: Thomas.Murphy@xxxxxxxxxxxx [mailto:Thomas.Murphy@xxxxxxxxxxxx]
Sent: Friday, June 08, 2001 3:45 AM
To: efmoptics@listserv.excitehome.net; stds-802-3-efm@ieee.org
Subject: Link Model


Hello All

I am sending this mail to both reflectors as I think the 
reflector for the EFM Optics group is not 'reflecting'.


I am working on link models for PON and p-p systems
based on component information I have here at my disposal.
Could somebody please send me a copy of the Excel spread-sheet
containing the values used to generate the results presented
at the St. Louis meeting.

Thanks in advance

Tom Murphy