[802.3_NGBASET] 40GBASE-T cabling channel webex minutes August 9

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(1)Reviewed IEEE patent policy

(2)Reviewed July 21 minutes and August 9 agenda; no changes to agenda

(3)Discussion on measurement models and volunteers

++Agreement to use the 3-24-3 channel topology instead of 5-20-5 for the maximum insertion loss case.

++Agreement on the following topologies as measurement priority:

>>3m-24m-3m
>>0.5m-3m-0.5m

>>1m-3m-1m

(4)Measurement volunteers

Wayne Larsen, Mike Good, and Bob Wagner all committed to providing data on these channels within the next two weeks.

(5)Comment on asymmetric measurement topologies

George Zimmerman suggested collecting measurements of asymmetric channels and agreed to follow-up with recommendations and rationale.

(6)The next meeting 8/23.

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August 23 Webex

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In a message dated 8/7/2013 12:10:55 P.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

Colleagues,

Reminder: Subject: 40GBASE-T cabling channel August 9 ; July 21 minutes attached below.

August 9 agenda

(1)Timeline(s) for measurement models

>>>>Max IL [5m-20m-5m] consider [3m-24m-3m]

>>>>Min IL [0.5m-3m-0.5m]

(2)Volunteers

Sterling OCC

Wayne Larsen – Commscope

Mike Good - Neaxans

Bob Wagner - Panduit

Agreements:

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

Use version 1 Touchstone files to transfer data.

Use 1 MHz step size

Start at 1 MHz

Stop at 2000 MHz or higher

Use the port mapping in figure 4 from Sterling’s contribution

(http://www.ieee802.org/3/bq/public/channelmodeling/Vaden_03_0613_16_Port_nomenclature.pdf),

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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In a message dated 7/15/2013 2:14:31 A.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

Colleagues,

Subject: 40GBASE-T cabling channel July 12 minutes; next meeting August 9 webex to follow.

July 12 attendance:

Paul Wachtel

Panduit

Peter Wu

Marvell

Sterling Vaden

OCC

Victor Renteria

Bel Stewart

Brian Buchmeier

Bel Stewart

Dave Jeskey

Sentinal

Mike Good

Nexans

Mike Grimwood

Broadcom

Chris DiMinico

MC Communications/Panduit

Wayne Larsen

CommScope

Brian Celella

Siemon

July 12 minutes:

Minutes from last meeting were approved.

Agenda was approved.

Port Mapping:

Sterling presented contribution.(http://www.ieee802.org/3/bq/public/channelmodeling/Vaden_03_0613_16_Port_nomenclature.pdf),

Agreements:

Use version 1 Touchstone files to transfer data.

Use 1 MHz step size

Start at 1 MHz

Stop at 2000 MHz or higher

Use the port mapping in figure 5 from Sterling’s contribution

Modeling:

Agreed that the modeling (from contributions made at previous meetings) shows that 0.5 m patch cords can be supported with the 2 dB enhanced return loss limit i.e., a 0.5 meter patch cords can be supported with a 2 dB (1 GHz-2GHz) improvement in Category 8 RL (D0.7) channel limits.

Agreed that shorter patch cords can be used, if they have the same insertion loss as 0.5 m patch cord (e.g., 0.5m 26 AWG stranded - IL TBD).

Next meeting August 9.

In a message dated 7/11/2013 8:44:25 A.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

Sent: June 27

Colleagues,

Subject: 40GBASE-T cabling channel June 21 minutes and July 12 meeting scheduled

Apologize that the reflector does not seem to be reflecting well; likely in need of counseling. Many never received the last meeting notice and minutes. As Geneva will likely be busy like to hold one more call prior; July 12.

June 21 meeting minutes;

(1)Port mapping: Reviewed Sterling Vadens port mapping proposal (http://www.ieee802.org/3/bq/public/channelmodeling/Vaden_03_0613_16_Port_nomenclature.pdf), General support for the need to label differential mode and single ended ports. Hope to reach consensus on labeling convention July 12.

(2)Update on RL modeling -

Paul Kish: A 0.5 meter patch cords can be supported with a 2 dB (1 GHz-2GHz) improvement in Category 8 RL (D0.7) channel limits.

(3)Chris DiMinico: Discussion on minimum patch cord IL to constrain patch cord loss to 0.5 m equivalent.

(4)Modeling and measurement models:

Martin Rossbach (nexans): Reaffirmation on the scope of the work to include measurements of the modeled configuration to generate s16p i.e., s16p measurements for PHY- channel modeling.

George Zimmerman: Asked about measurement scaling... General agreement to hold off scaling discussion till we receive (some amount of) measurement results.

July 12 agenda

(1)Close RL modeling discussion..

>>min patch cord length

(2)Close port mapping

(3)Planning for July Plenary

(4)Review measurement models submitted

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

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In a message dated 6/21/2013 9:59:13 A.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

Colleagues,

This is a resend announcement as I'm hearing that some have not received it...Sorry for multiple copies...

Subject: 40GBASE-T cabling channel Friday, June 21 8 AM PST

June 7th attendance as received in e-mail

Bob Wagner - Panduit

Peter Cibula - Intel

Wayne Larsen - Commscope

Brian Cellela - Siemon

Mike Grimwood - Broadcom

Mike Good - Nexan

Peter Wu - Marvel

Agenda

(1)Update on RL modeling

(2)Ultra short patch cord insertion loss

(3)Port definitions

(4)Planning for July Plenary

+++++++++++++++++++++++++++++++++++++++++++++

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

++++++

webex

++++++

1. Please join my meeting, Friday, June 21, 2013 at 11:00 AM Eastern Daylight Time.
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2. Use your microphone and speakers (VoIP) - a headset is recommended. Or, call in using your telephone.

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In a message dated 6/11/2013 7:40:43 P.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

In a message dated 6/20/2013 4:13:47 P.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes:

Colleagues,

Subject: 40GBASE-T cabling channel Friday, June 21 8 AM PST

June 7th attendance as received in e-mail

Bob Wagner - Panduit

Peter Cibula - Intel

Wayne Larsen - Commscope

Brian Cellela - Siemon

Mike Grimwood - Broadcom

Mike Good - Nexan

Peter Wu - Marvel

Agenda

(1)Update on RL modeling

(2)Ultra short patch cord insertion loss

(3)Port definitions

(4)Planning for July Plenary

+++++++++++++++++++++++++++++++++++++++++++++

Cabling ad hoc agreed to modeling configurations listed below

++++++++++++++++++++++++++++++++++++++++++

Ultra short patch cord in long channel - [.15m24m-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

++++++

webex

++++++

1. Please join my meeting, Friday, June 21, 2013 at 11:00 AM Eastern Daylight Time.
https://global.gotomeeting.com/join/606432669

2. Use your microphone and speakers (VoIP) - a headset is recommended. Or, call in using your telephone.

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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

In a message dated 6/11/2013 7:40:43 P.M. Eastern Daylight Time, CDimi80749@xxxxxxx writes: