Successful demonstration of compliance with OPEN Alliance TC9 test specifications completed

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Test and measurement company Rohde & Schwarz and connectivity and sensor component manufacturer TE Connectivity have successfully tested a communication link, utilizing Shielded Twisted Pair (STP) cables and TE’s MATEnet data connector system, for compliance with the One-Pair Ethernet (OPEN) Alliance Technical Committee (TC) group 9 test specification for 1000BASE-T1. 

Automotive Ethernet is becoming the preferred solution for in-vehicle communications, offering data speeds up to 10Gbps. For data speeds up to 1Gbps (1000BASE-T1), the communication link can run on unshielded twisted pair (UTP) cabling. However, for speeds of 1Gbps and higher, electromagnetic interference (EMI) becomes increasingly critical and can potentially threaten the integrity of other communications within the vehicle.  

Therefore, the OPEN Alliance TC9 group, which defines the requirements of cables and connectors for in-vehicle networks using automotive Ethernet, is now focusing on shielded cabling in order to minimize emissions, as the industry moves towards much faster speeds. 

Those who integrate in-vehicle networks using cables and connectors will need to ensure compliance with TC9 STP test specifications. Rohde & Schwarz assisted TE compliance tests were performed on STP cables with TE’s MATEnet terminals and connectors using the R&S ZNB vector network analyzer together with the integrated in-situ de-embedding (ISD) function from AtaiTec. 

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