RE: RE : [SI-LIST] : RE: Models & EDA Vendors

Dima Smolyansky (dima@tdasystems.com)
Thu, 19 Nov 1998 21:00:44 -0800

Weber:

TDR measurements are based on the analysis of the reflected signal, and =
any analysis is typically based on an assumption of a single signal =
path. For multidrop/T junction nets it is not the case, and it is one of =
the basic limitations of TDR-based analysis.=20

If you can make certain assumptions, for example, if your stubs at the =
junction are of the same length and physical structure, you can treat =
them as parallel structures and conduct the analysis accordingly. If =
your multidrop nets are very close to the main bus, maybe you can assume =
to be just lumped loads. All of this, however, depends on specific =
situation.

Thanks,

-Dima
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
Dima Smolyansky
TDA Systems, Inc.
7465 SW Elmwood St.
Portland, OR 97223
(503) 977-3629
(503) 245-5684 (fax)
dima@tdasystems.com
http://www.tdasystems.com

The Interconnect Modeling Company(tm)

-----Original Message-----
From: Weber Chuang [SMTP:WeberChuang@via.com.tw]
Sent: Thursday, November 19, 1998 6:25 PM
To: 'Dima Smolyansky'; 'Scott McMorrow'; Charles W. Martin
Cc: 'Si-list@silab.Eng.Sun.COM'
Subject: RE : [SI-LIST] : RE: Models & EDA Vendors

<< File: ATT00000.txt; charset =3D BIG5 >>=20

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