Re: [10GBT] Electromagnetic Performance of Cabling
Hi Alan,
Thanks for bringing this valuable piece of work to our attention.
I have the following questions/comments/clarifications:
1-On pg.4 the field measurement filter bandwidth is specified
at 120 kHz but starting from pg.5 every where a 200 kHz
field measurement bandwidth has been used.
2-On pg.10 what are the basis for 15 dB SNR.
3-On pg.10 the highest 100BASE-T frequency needs to be
specified at 62.5 MHz and not 62.25 MHz.
4-Can you provide the electronic version of Ref.[2]?
5-On pg.13 the TX pulse-shaping filter of 1000BASE-T PHY,
required by standard, needs to be taken into account.
6-In the example section the required coupling attenuation of
each example (10, 100 & 1000BASE-T) needs to be evaluated
based on specified type of cabling; i.e.
10BASE-T -----> Cat3
100BASE-T ----> Cat5
1000BASE-T ---> Cat5e
7-There are some spelling errors. It is a good idea to run a spell-
checking program.
Regards,
Joseph N. Babanezhad
Plato Labs.
----- Original Message -----
From: "Alan Flatman" <a_flatman@COMPUSERVE.COM>
To: <STDS-802-3-10GBT@listserv.ieee.org>
Sent: Monday, June 14, 2004 9:20 AM
Subject: [10GBT] Electromagnetic Performance of Cabling
> Hello fellow 10GBASE-T'ers,
>
> At the March plenary meeting I mentioned a contribution on cabling
> electromagnetic performance in my liaison report from ISO/IEC SC25 WG3.
> This contribution has been posted on the 802.3an site under public
> liaisons.
>
> PHY designers may find this contribution useful in relating transmit
> spectrum to EMC compliance, as discussed with Sanjay at the May interim
> meeting in Long Beach.
>
> Regards,
>
> Alan Flatman
> ISO/IEC SC25 WG3 Liaison with IEEE 802
>