6000 series , Flexible Resolution PicoScope 6424E 500 MHz 4-channel 8/10/12-bit Oscilloscope 6000 series , Flexible Resolution PicoScope 6425E 750 MHz 4-channel 8/10/12-bit Oscilloscope 6000 series , Flexible Resolution PicoScope 6426E 1 GHz 4-channel 8/10/12-bit Oscilloscope