Rigol 4 channel digital storage oscilloscope ds1100z series rigol ds1104z plus the rigol ds1104z plus is a high quality 4 channel digital storage oscilloscope dso with 100mhz bandwidththis high performance and economical digital oscilloscope has a real time sample rate of up to 1gsas and is ideal for the designing debugging and educational requirements of the mainstream digital oscilloscope market the oscilloscope is compact easy to use and packed with useful features and functions f