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Re: [802.3_10SPE] Touchstone file for Topology model

Stefan - thank you. I know that in the past such touchstone files have been useful to phy teams in making and evaluating proposals. I am currently traveling and will look at and upload the content tomorrow

George A. Zimmerman, Ph.D.
CME Consulting, Inc.
Experts in PHYsical Layer Communications

On Apr 20, 2017, at 6:23 AM, "stefan.buntz@xxxxxxxxxxx" <stefan.buntz@xxxxxxxxxxx> wrote:

Dear all,

I have set up a Simulation, which can provide a Touchstone file (*sNp). Attached in my mail is an exemplary *.s16p file.
(5Mbyte, I am not sure, if the reflector allows to send such big files. Otherwise: Georg - can you upload the file maybe?)

Before I work further and provide files of different topologies, I would like to know if such a format is
helpful for further simulations on automotive topologies.

The example is the MAX passive linear topology shown in earlier presentations,
the topology is simulated in a 50ohm system (each wire is terminated with 50ohms in the simulation).

The differential ports are always two adjacent ports of the simulation (e.g. "1" and "2" are together
the differential port of the head node, 3 and 4 are the ports of the first leave node and so on...)

Question to the group: is such data helpful to simulate further? If so, I will try to provide multiple topology examples.


Stefan Buntz
Mercedes-Benz Cars Development, Daimler AG
Group Research & Advanced Engineering
Safeguarding Hard & Software
HPC: U059 – Dep.: RD/FEQ

Phone: +49 731 505-2089
Mobil: +49 176 30 90 51 44
Fax: +49 711 305 216 45 95
E-Mail: stefan.buntz@xxxxxxxxxxx

Address for visitors:
Buildung 10
Room 3.2.022
Wilhelm-Runge-Str. 11
D-89081 Ulm

-----Ursprüngliche Nachricht-----
Von: George Zimmerman [mailto:george@xxxxxxxxxxxxxxxxxxxx]
Gesendet: Montag, 17. April 2017 19:24
An: STDS-802-3-10SPE@xxxxxxxxxxxxxxxxx
Betreff: [802.3_10SPE] FW: [802.3_DIALOG] Final deadline reminder for May 802.3 Interim Meeting

Colleagues - if you're at all like me and got caught up in all the meetings and forgot to register - heed this warning from Steve!  Registration FOR MAY is closing fast.

-----Original Message-----
From: Steven B. Carlson [mailto:scarlson@xxxxxxxxxxxxx]
Sent: Monday, April 17, 2017 10:08 AM
To: STDS-802-3-DIALOG@xxxxxxxxxxxxxxxxx
Subject: [802.3_DIALOG] Final deadline reminder for May 802.3 Interim Meeting


If you haven’t yet booked your hotel room for the May IEEE 802.3 Interim meeting Hotel hosted by the Ethernet Alliance, please be sure to do so now.

• Group rate rooms are still available at the InterContinental New Orleans, but the room block is filling up quickly and the cutoff date is Friday 21-April.
• Early registration is available through Tuesday 25-April.

The meeting is scheduled for the week of May 22-26, 2017; a social hosted by the Ethernet Alliance and CME Consulting is scheduled for Wednesday 24-May.

If you need help booking your hotel room, or have any questions about registration, please contact the meeting planner through the May meeting web site. Contact the Task Force and Study Group chairs for any questions about the projects.

Complete information about the meeting is available from the IEEE 802.3 site here:



Steven B. Carlson
Chair, Multi-Gig Automotive Ethernet PHY Study Group Executive Secretary, IEEE 802.3 Ethernet Working Group
High Speed Design, Inc.
Portland, OR

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