It’s three instruments in one 1. Powerful oscilloscope - 600 MHz, 1, 2.5 and 4 GHz bandwidths, fast sample rates and responsive deep memory. Lower bandwidth models are upgradeable. 2. MSO models add 16 channels of logic timing analysis. You can upgrade your scope later to an MSO. 3. Protocol analyzer for common serial buses - quickly move between physical and protocol layers with the time-correlated tracking marker.