Geoff, and all – I would add that my (independent) experience with field testers has been similar to what Matthias reports. I can confirm field testers in the 2-3 GHz band, but beyond that is substantially more difficult. Many of us remember
the work done in conjunction with Cat 8 cabling to get field testing to 2 GHz. It is not trivial, but, at this point multiple vendors have gotten to that point. While 3 GHz is not a huge extension, extending the frequency of practical testers for field and
assembly environments by another octave or more is a nontrivial task. Those involved in the cabling industry know that specifications for high performance cabling are often limited by the capabilities of test. And that is not to mention the extra difficulties
brought in by the harsher automotive environment.
-george
George Zimmerman, Ph.D.
President & Principal
CME Consulting, Inc.
Experts in Advanced PHYsical Communications
george@xxxxxxxxxxxxxxxxxxxx
310-920-3860
From: Geoff Thompson [mailto:thompson@xxxxxxxx]
Sent: Wednesday, April 04, 2018 11:16 AM
To: STDS-802-3-NGAUTO@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_NGAUTO] Wednesday 4 April NGAUTO ad hoc cancelled
Colleagues-
Thanks George for the information.
I review the last days for another project the market for field testers. The best handheld cable testers I found in the market can measure up to 2GHz or 2,5GHz bandwidth. Some of the HF experts in our lab and
the market pointed out only below 3 to 3,5GHz bandwidth such handheld tester are possible and economical feasible. For higher frequencies the high-end lab equipment (Vector Network Analyzer) is needed. Following the discussion about the bandwidth for Multi-Gig
Ethernet we should have this point in mind. All cable harnessing’s must be tested from the harnessing production before the wire harness installed into the car. And the price for the test equipment and the testing cost are also important for the car industry.
Also for maintenance in the field test equipment is needed. From this point of view my understanding is we should use a bandwidth below 3 to 3,5GHz.
Matthias point is well made.
Please remember that harnesses will have to be tested in automotive body shops and repair shops around the world
including lesser developed countries. The automotive market is a world-wide market.
Maintainability of high speed networks will be a major factor and challenge to their adoption.
So far my comment on this point. Any comment and other arguments are welcome.
Very nice greetings from Germany
Best regards / Mit freundlichen Grüßen
Matthias Fritsche
HARTING Electronics GmbH
Dept.: Device Connectivity
- Product Manager -
Marienwerderstraße 3
32339 Espelkamp - Germany
E-mail: Matthias.Fritsche@xxxxxxxxxxx
http://www.HARTING.com
Phone: +49 5772 47-9104
Fax: +49 5772 47-909104
Mobile: +49 171 3389010
HARTING Electronics GmbH, Marienwerderstraße 3, D-32339 Espelkamp; Registergericht: Amtsgericht Bad Oeynhausen; Register-Nr.: HRB 8808;
Geschäftsführer: Dipl.-Kfm. Edgar-Peter Düning, Dipl.-Wirtsch.-Ing. Ralf Martin Klein, Dipl.-Ing. Uwe Gräff, Dipl.-Ing. (FH), Dipl.-Wirtsch.-Ing. (FH) Andreas Conrad
Due to lack of contributions, the 4 April ad hoc is cancelled. Our next ad hoc will be on 18 April. Please let me know if you wish to make a
contribution.
George A. Zimmerman, Ph.D.
Experts in PHYsical Layer Communications
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