Rigol 4 channel digital storage oscilloscope ds1100z series rigol ds1074z s plus the rigol ds1074z s plus is a high quality 4 channel digital storage oscilloscope dso with 70mhz bandwidth and supplied with a built in 2 channel function arbitrary waveform generatorthis high performance and economical digital oscilloscope is ideal for the designing debugging and educational requirements of the mainstream digital oscilloscope market the oscilloscope is compact easy to use and packed wit