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Subject: Meeting minutes 40GBASE-T cabling channel held June 7.
Next meeting: Friday, June 21 8 AM PST webex to follow...
Discussed cabling modeling report(s) listed below- These contribution were presented at the June 5th Channel ad hoc and the June 7 Cabling ad hoc didn’t feel necessary to re-review but agreed to hear summary’s
Paul Kish comments: Short length patch cord dominant factor for RL – (.5m meets Cat8 RL) (.15 m won’t meet C8 RL) – Better RL than Cat8 can be achieved with improved components (LF/cable, HF/connector). Improvements of channel RL are observed for 4 connector vs 2 connector channels.
Sterling Vaden comments: Component RL selected worse than Paul’s and Sterling’s results track the differences; cable structure different than Paul’s. IL model shows positive margin from Cat8 limit and further work necessary to evaluate. Sterling will contribute to touchstone format.
Chris DiMinico comment(s): It would be useful for those modeling to agree on a cable RL model…
Consider: Min patch cable to model (.15m) – [Specify insertion loss of cable (TBD)]
Reviewed possible channel configurations in source document.
Potential Path Forward for Channel Modeling Ad Hoc - updated during meeting -zimmerman_02_0513_40GBTah.pdf
Cabling ad hoc agreed to modeling configurations listed below
Ultra short patch cord in long channel - [.15m-24m-5m]
Max IL - [5m-20m-5m]
Ultra short .15-3-.15
Ugly short .5-3-.5
ISO short ref- 1-10-1
30m asym#1 1-26-3
30m asym#3 1-24-5
Modeling Volunteer list:
Discussed scope of cabling ad hoc utilizing contribution…
Chris DiMinico: >>40GBASE-T PHY-cabling ad hoc.pdf
Measurements of modeling configurations were discussed.
Agreement to generate 16 port measurements – (single ended - touchstone)
Wayne – Commscope
Mike Good -
Peter Cibula (Intel) suggested there may be an opportunity to use Intel’s 16 port VNA for testing; to be determined as part of the measurement activity.
Chris DiMinico suggested that UNH-IOL and Agilent might be interested in supporting channel characterization.
In a message dated 6/6/2013 1:18:38 P.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes: