240-8192, Tektronix, Tektronix MSO22 MSO2 Series, 500MHz Bench, Portable, Ultra Compact Oscilloscope, 2 Analogue Channels, 16 Digital Tektronix MSO22 MSO2 Series, 500MHz Bench, Portable, Ultra Compact Oscilloscope, 2 Analogue Channels, 16 Digital