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Re: [802.3_NGBASET] Reminder: 40GBASE-T cabling channel webex July 12

 

 

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

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

1. Please join my meeting, Friday, July 12, 2013 at 11:00 AM Eastern Daylight Time.
https://global.gotomeeting.com/join/790498221
2. Use your microphone and speakers (VoIP) - a headset is recommended. Or, call in using your telephone.
Dial +1 (510) 443-0605
Access Code: 790-498-221
Audio PIN: Shown after joining the meeting
Meeting ID: 790-498-221
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Not at your computer? Click the link to join this meeting from your iPhone®, iPad® or Android® device via the GoToMeeting app.
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.
https://global.gotomeeting.com/join/606432669

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

Dial +1 (213) 493-0606
Access Code: 606-432-669
Audio PIN: Shown after joining the meeting

Meeting ID: 606-432-669

GoToMeeting®
Online Meetings Made Easy®

Not at your computer? Click the link to join this meeting from your iPhone®, iPad® or Android® device via the GoToMeeting app.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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 - [.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.
https://global.gotomeeting.com/join/606432669

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

Dial +1 (213) 493-0606
Access Code: 606-432-669
Audio PIN: Shown after joining the meeting

Meeting ID: 606-432-669

GoToMeeting®
Online Meetings Made Easy®

Not at your computer? Click the link to join this meeting from your iPhone®, iPad® or Android® device via the GoToMeeting app.

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