[SI-LIST] Re: Estimate ISI with S parameters -- Using TDR to do SDD21 correlation?
- From: "Gary Otonari" <garyo@xxxxxxxxxxxx>
- To: <John@xxxxxxxxxxxx>
- Date: Mon, 16 May 2005 22:58:27 -0700
Hello John,
Just representing our partner, Agilent.
ADS allows you to interface directly to VNA instrumentation and use
S-parameter data as a model. The data processing capability includes many
built in data patterns, as well as the ability to interface directly to
instrumentation for data generation, or correlation to measured BER. ISI can
be evaluated with Eye diagrams, Jitter, BER, etc.
They have some new SI Product literature:
http://cp.literature.agilent.com/litweb/pdf/5988-5405EN.pdf
Here is an App. Note on integrating BER simulation with Agilent data
generation and BER measurement tools. The application is RF communications,
but the capability is extensible to any high speed data channel
http://literature.agilent.com/litweb/pdf/5989-0024EN.pdf
-- Gary
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of John Lin (ªL´Â·×)
Sent: Monday, May 16, 2005 7:13 PM
To: Scott McMorrow
Cc: steve weir; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Estimate ISI with S parameters -- Using TDR to do
SDD21 correlation?
Hi Scott,
Thank you for helps.
Yes, I can run circuit with s-parameter model. Here, one question. Before,
I would like to run random pattern for ISI. Recently studying, show only
need to do pulse response to see
how the result waveform penetrates to next signal. It makes sense to me and
also easier to run simulation. Any comments on this method?
Also, I don't have a 4 port VNA to measurement SDD21 for correlation.
However I have a TDR with only one differential module to measure trace
impedance (SDD11).
(I cannot use TDT functions since only one module installed)
Is it reasonable to correlate SDD11 as a indicator for the correlation of
SDD21? Do I miss something?
Thanks,
John
________________________________
From: Scott McMorrow [mailto:scott@xxxxxxxxxxxxx]
Sent: Monday, May 16, 2005 9:21 PM
To: John Lin (ªL´Â·×)
Cc: steve weir; si-list@xxxxxxxxxxxxx
Subject: Re: [SI-LIST] Re: Estimate ISI with S parameters?
John
If you have HSPICE available, you can set up a circuit with s-parameter
modeling to measure any pattern dependent ISI that you want.
scott
Scott McMorrow
Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
(401) 284-1827 Business
(401) 284-1840 Fax
http://www.teraspeed.com
Teraspeed(r) is the registered service mark of
Teraspeed Consulting Group LLC
John Lin (ªL´Â·×) wrote:
Hi Steve,
Thanks for your helps.
>From other response, it looks like, I need to transfer channel's S
=
parameters into time domain
and do pulse repsonse to see how the curve at the falling edge =
penetrates to the period=20
Of a next signal.
In your mail, ISI is relative to attenuation,SDD21.
I read SAS/SATA spec. There is a ISI compliant curve shown on a
SDD21 =
chart.=20
The ISI curve is steeper than SDD21 compliant curve.=20
How to generate a ISI curve at the frequency domain by simulation to
=
check if meet the requirement.?
Thanks,
John
-----Original Message-----
From: steve weir [mailto:weirsi@xxxxxxxxxx]=20
Sent: Saturday, May 14, 2005 1:34 AM
To: John Lin (=AAL=B4=C2=B7=D7); si-list@xxxxxxxxxxxxx
Cc: John Lin (=AAL=B4=C2=B7=D7)
Subject: Re: [SI-LIST] Estimate ISI with S parameters?
John variable attenuation versus frequency within the symbol
frequency =
band will give rise to ISI as the amplitude at any given point will
=
depend on the previous history of symbols, and hence the name ISI.
Steve
At 10:25 AM 5/13/2005 +0800,
=3D?big5?B?Sm9obiBMaW4gKKpMtMK31yk=3D?=3D =
wrote:
Dear all SI experts,
Can some ones explain how to relate ISI (inter-symbol
interference) to=20
S parameters?
What can be observed from S -parameter for differential 4
parts=20
simulation? For example, crosstalk, attenuation,
reflection,....etc.
Thanks,
John
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the
Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject
field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject
field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
-- Binary/unsupported file stripped by Ecartis --
-- Type: application/ms-tnef
-- File: winmail.dat
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List FAQ wiki page is located at:
http://si-list.org/wiki/wiki.pl?Si-List_FAQ
List technical documents are available at:
http://www.si-list.org
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
