I support leaving the TIA reference
in for completeness.
Thank you,
Valerie Maguire
The Siemon Company
----- Forwarded by Valerie
Maguire/The Siemon Company on 04/27/2011 06:41 AM -----
"Kolesar, Paul"
<PKOLESAR@xxxxxxxxxxxxx>
04/27/2011 06:34 AM
Please respond to
"Kolesar, Paul" <PKOLESAR@xxxxxxxxxxxxx>
To
STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
cc
Subject
Re: [802.3_MAINT] Revising Clause 52
10GBASE-S for OM4
Pete,
I considered your proposed
alternative as I wrote my proposed change. The reasons why I decided
to propose appending the IEC reference rather than replacing the TIA reference
are that the TIA reference for OM3 is cited in note e, and both IEC and
TIA references are cited in note d. So following those precedents
I thought it better to be complete.
Regards,
Paul
From: Anslow, Peter [mailto:panslow@xxxxxxxxx]
Sent: Wednesday, April 27, 2011 5:45 AM
To: Kolesar, Paul; STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
Subject: RE: Revising Clause 52 10GBASE-S for OM4
Paul,
I agree with your proposed
changes except that on slide 13, note f, I think it would be better to
replace the TIA specification with a reference to IEC
60793-2-10:2011 since there has been a trend to prefer international IEC
references and there doesn’t seem to be a good reason to introduce possible
ambiguity by specifying multiple sources for this information.
Regards,
Pete Anslow |
Senior Standards Advisor
43-51 Worship Street |
London, EC2A 2DX, UK
Direct +44 2070 125535 |
From: Kolesar, Paul [mailto:PKOLESAR@xxxxxxxxxxxxx]
Sent: 26 April 2011 21:13
To: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_MAINT] Revising Clause 52 10GBASE-S for OM4
Matt,
Thanks for circulating this
slide deck. I remain a supporter, and thanks for listing my name.
Please change my affiliation from Systimax to CommScope. Although
they are often used interchangeably because SYSTIMAX Solutions was the
former name of the division, SYSTIMAX is a brand of cabling solutions offered
by CommScope.
A few more suggestions.
Slide 3, bullet 3: for improved
clarity and simplicity I suggest changing “new multimode fiber” to “OM4”.
Global (affecting slide 3 bullet
1, slide 13 note f, and slide 14), please be aware that the IEC specification
containing OM4 has now been published. It is the same as the TIA
spec. So the references to TIA-492AAAD, while accurate, now have
an international alternative, IEC 60793-2-10 edition 4: 2011. Below
I’ve pasted the cover page viewable from the IEC web store. The
specific effect on the three slides mentioned is as follows:
Slide 3, bullet 1: suggest
changing to:
TIA and IEC have standardized
a new class of multimode fiber, OM4, in TIA-492AAAD and IEC 60793-2-10
ed.4
Slide 14: Given that
the edition of the cited IEC reference is not specified, the latest edition
(ed. 4) is implied. In that case the proposed addition of the reference
to TIA-492AAAD is not needed and the slide can be deleted.
Lastly, on slide 13 the dispersion
slope entries need to be corrected as follows (see yellow highlighted text):
From:
0.105 for 1295 <= lambda0
<= 1310 And 0.000375x(1590-lambda0) for 1295 <= lambda0 <= 1340f
To:
0.105 for 1295 <= lambda0
<= 1310 and 0.000375(1590-lambda0) for 1310 <= lambda0 <= 1340f
If these changes are not clear,
please call or email your concerns.
Regards,
Paul
From: Matt Traverso (mattrave) [mailto:mattrave@xxxxxxxxx]
Sent: Tuesday, April 26, 2011 12:46 PM
To: STDS-802-3-MAINT@xxxxxxxxxxxxxxxxx
Cc: John Petrilla; Jonathan King; Houfar Azgomi (hazgomi); Hugh Barrass
(hbarrass); Carlo Tosetti (ctosetti); Marco Mazzini (mmazzini); Kolesar,
Paul; Chris Cole; Petar Pepeljugoski; Ali Ghiasi; Mike Dudek; Wael Diab
Subject: Revising Clause 52 10GBASE-S for OM4
IEEE Colleagues,
During the working group ballot phase for
the maintenance project (exiting July plenary, http://www.ieee802.org/3/minutes/mar11/0311_maint_close_report.pdf#Page=8)
, we intend to submit a revision comment. The attached presentation
provides the background, and details the proposed changes. In the
interest of building consensus prior to the working group ballot, we wish
to solicit additional expert opinions & supporters. Please advise
if there are any questions.
Also, per an offline discussion with Wael
Diab, it seems likely that an opportunity to present this material at the
July plenary should be available.
Thanks for your attention,
--matt traverso
w = 408.853.3211
e = mattrave@xxxxxxxxx
