Re: [BP] Wed August 4th Agenda: 802.3ap Channel Model Adhoc Conference Call
Joel
I can not make the meeting today, however would like to give my comments
on averaging.
One can have a low bandwidth with little or no averaging, or one can
have mid bandwidth and higher averaging. The problem with setting a low
bandwidth is analog distortion due to the small BW, whereas if one opens
up the BW a bit but increase the averaging (hence total time quite
similar) we have found that the reproducibility of the repeatably taking
the same measurement is better. The best values we have found is a BW of
1kHz and averaging set to 16.
Graeme
On Tue, 2004-08-03 at 09:33, Joel Goergen wrote:
> Wed August 4th Agenda:
> - VNA averaging, with the higher resolution, do we really need to wait
> the 15minutes for 16averages?
> - SMA De-Embedding for test cards
> **If you have an idea on this, please send it out to the
> group/refelctor today. I'm open on this and would like some thoughts.
> **I plan to send the new run of test cards out right after we
> finalize the de-embedding.
> - Changes to SDD21 from 50Mhz to 4.5Ghz. I want to discuss this and
> plan to send out the equations tonight with a 4dB drop in this range.
> - Group Delay Variation
> **I want to walk through the process for this. Petre or Jeff ...
> if you have a slide you could put together to show how we create this,
> I would appreciate it.
>
> Thurs August 12th Agenda:
> - Changes to crosstalk mask
>
> The remaining two meetings will be to discuss the final mask sets to
> present to the body for approval sept/oct.
>
> Take care
> -joel
>
> Joel Goergen wrote:
> > 802.3ap Channel Model Adhoc Conference Call times:
> > August 4, Wed, 10am PDT
> > August 12, Thurs, 10am PDT
> > August 19, Thurs, 10am PDT / we should consider moving this to Sept
> > 20th
> > Sept 9, Thurs, 10am PDT
> >
> > Hi Everyone,
> > Please set these times in your schedules. Agenda will be sent out
> > Monday
> >
> > -joel
> > ---------------------------------
> >
> >
> > Everyone that wants to is invited to participate. Anything decided
> > will not be decided, but 'recommended'. Please keep that in mind.
> >
> >
> >
> > Conference ID: 4379020
> >
> > Dial-in number: 8773262337
> >
> > International dial-in number: 303-928-3232
> >
> >
> > Take care
> > Joel Goergen
> >
> >
> >
> >
> >