From serial PMD call, 30 Jan. 01: RIN, TMS. Different phone# this week
1. Report from editors' meeting
A new set of jitter subclauses was created. This will serve as a straw man
to draw out constructive criticism, having more relevant content than in the
last draft. There will be three jitter tables in the serial clause, one for
each wavelength/fibre type.
OMA and triple trade off need more work off line (David Kabal, Mike Dudek,
Peter Öhlén).
MDIO/MDC name mapping tables will be added to relate functions in clauses
45, 52 and 54.
Next draft of the standard is due on 9 February.
2. RIN numbers
We noted that the draft standard has -125 dB/Hz at 850 nm but -130 dB/Hz at
1310 and 1550 nm (all RIN12OMA).
We propose changing two of these so that all three say -125 dB/Hz, giving a
RIN penalty ~0.15 dB. *** Does the readership of this reflector think this
is reasonable? Note, numbers like this should be backed up with
experimental evidence at some point ***
Someone said that measuring RIN with -12 dB reflection was overkill on SMF
because that represents a very short link, with plenty of margin expected.
3. Interferometric Noise
Brief discussion showed increasing agreement on the detail but still no
consensus. Note submissions from Petar and Peter which we hadn't
assimilated at the time of the call.
4. TMS
The timescales and scope of the TMS subject matter do not sit well with
802.3ae. It is now proposed that a set of registers be marked "reserved for
PHY management services". I understand this would allow for an independent
standardisation effort(s) or commercial agreement(s) which is/are not
formally linked to 802.3ae.
5. Jitter meeting
Discussion of possible meeting 8-9 February. See emails from Bill Reysen.
Next meeting
------------
Same time? *** DIFFERENT *** phone number:
4pm GMT = 8am PST Tuesday 6 February 2001 for an hour and a half -ish
Phone number to be advised
Piers