The point of probing is between a network switch and the PHY that expands one encoded channel into four physical connections using QSGMII (quad serial gigabit media-independent interface). However, he was able to capture 190+ MB of data and wrote a simple parser to analyze the network data pulled from the switch. The scope attached is a Textronix, but it didn’t have the analyzer to read network data.
In particular, he had - or, rather, had someone - solder an active differential probe soldered into an Ethernet switch. While most of us might reach for Wireshark, he started at the PCB level. He decided he wanted to look into what was on the network.
, like many of us, has a lot of network-connected devices and an oscilloscope.
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