[LearnElectronics] grabbed a FNIRSI tablet oscilloscope from a vendor from China. The device has a seven-inch touchscreen and claims to be a two-channel 100 MHz scope. But is it? Watch the video ...

This device looks like a classic one-channel oscilloscope, complete with all the knobs and settings you’d expect. The DL 901, made by Data Laboratories Ltd., is a mystery even to [Thomas], who ...