[10GBT] Channel models and frequency range and other details of measurements
At the last meeting
in Long Beach, there was mention of a TIA meeting and an ISO meeting. I don't
recall the exact dates but I believe the TIA meeting should be over by now and
possibly the ISO meeting too.
1) Can any of the
folks who were at either of those meetings summarize any items that may be
relevant to the 10GBASE-T task force? What I am asking for will not replace any
official liaison letter we get so please don't flame all over this request.
If official liaison letters have been received, can we get copies of those
before our July meeting?
2) Were there
any recommendations made by either of these bodies requesting us
to change our NEXT models or return loss models? If the appropriate
officials of either of these organizations are on this task force, can they
provide the official response?
3) Also, looking
through the proposals on the table right now, the proposed symbol rates now
range from 810Msym/sec to 1000Msym/sec.
Given this, can we
provide any guidance to the cabling industry on what frequency range we would
like to see measured data?
4) For those of you
planning to run time domain simulations, is there a preference on the frequency
resolution of the measurements?
The transformer data
has been provided in non-uniform frequency intervals - starting at roughly 14Khz
spacing near DC and ~25Mhz near 600Mhz.
Some of the cabling
data has been provided at 625Khz frequency spacing. Other cabling data has been
provided at 750Khz frequency spacing. Any recommendations on a common frequency
resolution? If so, what spacing?
Regards,
Sanjay Kasturia
Editor-in-chief, 802.3an
cell (650) 704-7686
office (408)
653-2235
fax (408) 844-8187
Teranetics Inc.
2953 Bunker Hill Lane, Suite
204
Santa Clara, CA
95054