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[802.3_B400G] IEEE P802.3dj [optical track] - Going Forward for May Meeting



Further to Kent’s email.  Within the optical track, here are some of the topics that we anticipate being relevant and important to the Working Group ballot review and comment resolution that will start after the May interim.  We would therefore like to encourage some early contributions and discussion to happen in both the ad hoc and the May interim meetings to help us collectively get ahead on these topics.  Some known topics are listed below (but is not intended to be exhaustive).  Please follow up with me on anything additional that you think needs to be identified too.

 

Optical related

  • Reconciliation of the Cl 185 and clause 187 specification methodologies
  • ETCC validation (test data, script)
  • Overall coherent clauses spec validation (more than just ETCC) – test data
  • Link performance specification methodology updates 
    • TDECQ related
    • Rx performance related
  • Multi-path Interference (MPI) penalty
  • 200G/lane IMDD spec validation – test data

 

Regards,

Mark

 

 

From: Kent Lusted <00003dd2e253c6a1-dmarc-request@xxxxxxxxxxxxxxxxx>
Date: Friday, March 21, 2025 at 10:02
AM
To: STDS-802-3-B400G@xxxxxxxxxxxxxxxxx <STDS-802-3-B400G@xxxxxxxxxxxxxxxxx>
Subject: Re: [802.3_B400G] IEEE P802.3dj - Going Forward for May Meeting

Dear Colleagues,

 

As requested by the Task Force Chair, the electrical editorial team and I provide the following electrical-related topics that are likely to be raised during the Working Group ballot phase.  (The list below is not intended to be an exhaustive list of topics; if a topic is missing, please call it to my attention via a private email.) 

 

Electrical-related: 

  • COM quantization noise
  • Reference receiver equalizer limits 
  • Max swing and initial ILT setting
  • DC common mode
  • Steady State voltage
  • AN/LT timers and timeouts
  • S-param Frequency range
  • Mated fixture ILdd
  • R_peak values 
  • ERL with reference impedance other than 50 Ohm
  • Jitter 
  • SNR_isi and SNDR

 

Participants working on these Working Group ballot phase topics are strongly encouraged to consider contributions for the May 2025 interim meeting.  This will facilitate discussion and consensus building in advance of the start of Working Group ballot and comment consideration in July. 

 

With regards,

-Kent

 

 

 

Kent Lusted

IEEE P802.3dj Task Force Electrical track chair

 

 

 

 

 

From: John D'Ambrosia <jdambrosia@xxxxxxxxx>
Sent: Friday, March 14, 2025 12:58 PM
To: STDS-802-3-B400G@xxxxxxxxxxxxxxxxx
Subject: [802.3_B400G] IEEE P802.3dj - Going Forward for May Meeting

 

All,

First, I would like to congratulate the Task Force on its success this week and its decision to pre-submit D1.5 (our next draft) for consideration by the IEEE 802.3 WG to grant approval for us to proceed to WG Ballot after the May 2025 Interim.  

As noted in my closing comments at the March 2025 Plenary, I encourage individuals to consider the submission of any comments for the sixth task force review, as the entire draft will be open for comment with the initial WG Ballot.

  

Given the state of the project, some may be assuming that the May meeting will be light.  However, given the expected high number of comments that are typically submitted during an initial WG Ballot, the leadership will utilize any extra time in May for consensus discussions and / or presentation time on critical discussions (i.e.. challenging issues, deferred topics, other??).   

The track chairs will provide a list by next Friday (21 March) that identifies topics that they believe will be raised during the WG ballot.  Contributions are encouraged and the Track Leaders will use these contributions for discussion and consensus building that can be leveraged in July for quick resolution of these issues raised in the WG Ballot.

Regards,

John D’Ambrosia

Chair, IEEE P802.3dj Task Force


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