<ul><li>Well-funded labs in the RS232 days used to have HP4957A protocol analyzers, which can now be found cheaply on the surplus market.</li><li>A video featuring an HP4957A protocol analyzer shows its cool design and functionality, including the ability to load different interpreters from ROM to RAM.</li><li>Old RS232 gear, like breakout boxes and advanced sniffers, can still be found and may be useful for systems that require communication between devices.</li><li>Using modern technology like a PC or a Pi Pico can achieve similar results, but lacks the same charm and nostalgia as the vintage HP4957A protocol analyzer.</li></ul>

Protocol Analyzer Remembered

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