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

Re: [802.3_100GCU] Recommended channels to use

Charles,

Thanks for volunteering and taking the time to do this. This is very useful!
I am parsing the data as we speak, and will have some meaningful feedback soon.

BTW, I noticed that for the TEC channels, you are using many of the same pins for NEXT as well as FEXT. I understand that this channel configuration is somewhat academic, but should we try to make it more realistic by making the NEXT and FEXT ports mutually exclusive?

Regards
Vivek 




-----Original Message-----
From: Charles Moore [mailto:charles.moore@xxxxxxxxxxxxx] 
Sent: Tuesday, June 12, 2012 4:42 PM
To: STDS-802-3-100GCU@xxxxxxxxxxxxxxxxx
Subject: [802.3_100GCU] Recommended channels to use

folks,

    At the June 7 channel model consensus group discussion i agreed to 
provide recommended channels to use for testing potential channel 
evaluation methods.  Enclosed is a csv file with my recommendations for 
NRZ channels intended to work without FEC. A recommended set for PAM4 
will be following at a later date.

   In the file i list 10 channels,

   2 which qikSN says are definitely bad, even with FEC,
     one a long channel, the other short;

   6 which qikSN says are near the limit without FEC, some
     slightly above the limit, some slightly below.

   2 which qikSN say are definitely good both moderately long.

Two of the channels, which i call FCI_Long4, and FCI_short_7 have 
questionable data at 50MHz, the lowest available frequency.  I recommend 
that anyone trying to use them delete or correct the 50MHz data.

                       charles

-- 
|--------------------------------------------------------------------|
|       Charles Moore 
|       Avago Technologies
|       APD
|       charles.moore@xxxxxxxxxxxxx
|       (970) 288-4561
|--------------------------------------------------------------------|