[SI-LIST] Re: 4-port node numbering
- From: "Loyer, Jeff" <jeff.loyer@xxxxxxxxx>
- To: <tony_dunbar@xxxxxxxxxx>
- Date: Tue, 13 Dec 2005 12:44:18 -0800
I concur 100% - make no assumptions about "correct" numbering scheme.
Spell it out in any models, presentations, etc. And don't forget to do
the same when talking about diff pairs (SDD31, for instance). Ambiguity
inevitably leads to error.
Disclaimer:
The content of this message is my personal opinion only and although I
am an employee of Intel, the statements I make here in no way represent
Intel's position on the issue, nor am I authorized to speak on behalf of
Intel on this matter.=20
Jeff Loyer
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Dunbar, Tony
Sent: Tuesday, December 13, 2005 12:18 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: 4-port node numbering
Ray,
I come across quite a broad range of such Touchstone format files from a
number of vendors. I come across both forms in about equal measure.
What's most infuriating is that very few suppliers take the time to
provide comment text in the file header to inform the user which port is
which.
I know you're asking for comments on 4-port systems, but I've also come
across a dual diff-pair 8-port example from one vendor (which had
excellent comment text) that followed your example b) form; i.e. ports
1-4 down the left side for the socket-end and ports 5-8 down the right
side for the plug-end.
Due to the lack of specification or rigorous convention, let's at least
have some header text, please!!
Regards,
Tony
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ray Anderson
Sent: Tuesday, December 13, 2005 1:49 PM
To: si-list@xxxxxxxxxxxxx
Cc: Ray Anderson
Subject: [SI-LIST] 4-port node numbering
I have general question regarding 4-port s-parameter files. Does anyone
know if there is a generally accepted industry standard for node
numbering?
=3D20
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