A 200 MHz, 2-channel digital scope with an 8-bit ADC, real sample-rate and memory-depth limits, probe models, edge and pulse-width triggering, math, FFT and cursors. The generator on the right feeds CH1. CH2 can probe a few small circuits, or the second wire of a pair: SPI data, a second power rail, the − leg of a differential signal. Pick a challenge to practise with hidden signals.