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Brad,
Please find responses inline....
Brad: If there is no information provided that indicates 24 AWG twinax
copper cabling can meet the bend radius, diameter and weight requirements for
inter-rack and intra-rack interconnect, then has the study group sufficiently
responded to broad market potential?
Chris:
>>24 AWG twinaxial copper cables are used for inter-rack and
intra-rack interconnects.
>>Although there are documents that address specifications for 24 AWG
twinax copper interconnects related to bend radius, they don't constitute
requirements for inter-rack and intra-rack interconnect applications.
>>For CX4, CR4 and CR10 the cable assembly differential
characteristics are specified. During the development of these
specifications, 24 AWG cable assembly measurements were presented.
>>In the formulation of the IEEE 802.3 100 Gb/s Backplane and
Copper Study Group call for interest material, I provided outer dimensions
for 24 AWG twinaxial cable - 9.3 mm (0.366).
Regards, Chris
In a message dated 5/30/2011 10:50:28 P.M. Eastern Daylight Time,
bjbooth@xxxxxxxxx writes:
John,
Glad to hear that the meeting was successful.
Was there any consideration for listing the gauge of the wire for the 5m
twinax copper cabling objective?
At the meeting in Singapore, there was a request during the straw poll to
list the gauge of wiring and it did slightly alter the results of the poll.
Even the presentation by Mark Gustlin at last week's meeting highlighted the
importance of bend radius and diameter which can be directly related to the
gauge of wire. Did the study group discuss the bend radius and
diameter requirements? Is it fair to assume that the gauge of wire for
the twinax copper cabling objective is the same used in the Singapore straw
poll (24 AWG)? If 24 AWG is assumed, was there any information presented or
provided to indicate that the cable would be able to meet the bend radius,
diameter and weight requirements for the intended application?
If there is no information provided that indicates 24 AWG twinax copper
cabling can meet the bend radius, diameter and weight requirements for
inter-rack and intra-rack interconnect, then has the study group sufficiently
responded to broad market potential?
Thanks,
Brad
On Sat, May 28, 2011 at 11:39 PM, John D'Ambrosia <jdambrosia@xxxxxxxxxxxxxxx>
wrote:
Dear Study Group Participants,
I hope everyone had safe journeys home.
I have to say it was one of my more adventurous travels. However,
given the success of the meeting, the travel was well worth it!
The Study Group was successful in reaching consensus on
the objectives, PAR, and 5 Criteria responses. They have been posted,
and may be found at http://www.ieee802.org/3/100GCU/index.html.
July will be the next key milestone, as we look forward
to the necessary approvals to move from Study Group to Task Force.
The minutes will be posted shortly.
Best Regards,
John D’Ambrosia
Chair, IEEE 802.3 100Gb/s Backplane and Study Group
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