10 Best 4-Channel Oscilloscopes (July 2026) Expert Reviews
Debugging SPI with a 2-channel oscilloscope means constantly swapping probes between clock, MOSI, MISO, and chip select. I spent three months doing exactly that before upgrading to a 4-channel oscilloscope, and the difference was immediate. Having all four signals visible simultaneously revealed timing issues I never caught with channel juggling. A 4-channel oscilloscope displays four … Read more