Digital Storage Oscilloscope, 4 channels, 200 MHz, Color Display Digital Storage Oscilloscope, 2 channels, 200 MHz, Color Display Digital Storage Oscilloscope, 4 channels, 100 MHz, Color Display Digital Storage Oscilloscope, 2 channels, 100 MHz, Color Display Digital Storage Oscilloscope, 2 channels, 60 MHz, Color Display Digital Storage Oscilloscopes