https://paul-fleischmann.com/en/tags/testing/Recent content in Testing on Paul FleischmannHugoenThu, 02 Jul 2026 00:00:00 +0000https://paul-fleischmann.com/en/autosar/ethtrcv/ethtrcv-loopback-modi/Thu, 02 Jul 2026 00:00:00 +0000https://paul-fleischmann.com/en/autosar/ethtrcv/ethtrcv-loopback-modi/How internal, external, and remote loopback work inside the Ethernet PHY, how EthTrcv drives them, and why they are indispensable for end-of-line testing and fault isolation.