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Per the 1/13 TP2 meeting minutes, we discussed related D1.0 comments.
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Nick asked if we could pre-resolve some comments relating to TP2.
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The comment list is in the agenda. All comments
were discussed.
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A separate email will attempt to capture
progress.
Discussions: (note - there are some of
the secretary's subsequent opinions added below, preceded with "TL -").
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Comment 49 & 50
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No disagreement that overshoot masks should
be relaxed. Lew was not on call to present his view that overshoot masks
should be eliminated, so final value decision was deferred. Plan to discuss
next week.
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Re-raised concern that absolute overshoot
power may need to be limited for Rx linearity. No specific proposals were
given, and no specific comment was submitted, so this is a potential future
item.
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Comment 81 & 83
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Recalled that prbs pattern is for component
level testing. Normative test will use a subpattern from AnAi or
BnBi.
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Agreed that final prbs pattern must be better
defined, preferably referencable through another standard.
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Agreed that final prbs pattern should be
convenient, preferable built-into pattern generators.
- It is understood that prbs7 is probably not adequate, but more work is
required to determine the best option. Work is planned (see TP2 notes).
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Discussion about insertion of extra zero to
balance prbs pattern not conclusive.
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Agilent has reported that "zero-insertion"
is standard on new equipment.
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Idea was raised to insert long(er) runs of
1's and 0's into pattern to stress lower frequency impairments. Not
concluded.
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Plan to discuss again next week. TL - for
now, we should change at least to prbs9, probably x^9+x^5+1.
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Comment 104
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Comment 106
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Comment 109
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Okay. Waiting to discuss MATLAB code 1/20 on
TP2 call. Editorial format for the code, including scope of comments, should
follow precedence of other standards (clause 40). TL - clause 40 appears to
have minimal comments.
- Comment 111
- Okay, but final pattern is TBD.
- Comment 107
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Spirit of comment is good.
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Need noise <<N0 of simulated Rx white
noise density.
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Jan Peeters Weem to test effect of
noise in lab and run through MATLAB code, report on 1/20
call.
- TL - some follow-on discussion are occurring with good progress.
Expect to conclude next week. A recommended # of averages value
may be given, leaving an actual number of averages up to the
tester.
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Comment 108
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Okay. Crosstalk from asynchronous Rx should
be removed by averaging, so requirement for simultaneous operation should
not be not necessary.
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TL - so does crosstalk get measured in RIN
test?
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Comment 110
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Okay. Location and format of the
informative section not clear. Editor's preference, but should follow
precedence of other standards, perhaps clause 40. Comment suggest appendix,
since body of standard should focus on normative
material.
Please respond if I
errored in recording these comment discussions.
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