Open Source Linux

Oct 9, 2024 · Fundamentals

How a Mixed‑Signal Oscilloscope Reveals Ethernet’s Physical‑Layer Secrets

This article examines twisted‑pair Ethernet (10Base‑T and 100Base‑TX) using a mixed‑signal oscilloscope to decode Manchester, 4B5B, MLT‑3 and NRZ‑I encodings, demonstrates practical packet capture with ping tests, and compares hardware‑captured signals to software‑derived data, bridging the software‑hardware analysis gap.