Rigol 4 channel digital storage oscilloscope ds1100z series rigol ds1104z s plus the rigol ds1104z s plus is a high quality 4 channel digital storage oscilloscope dso with 100mhz bandwidth and supplied with a built in 2 channel function arbitrary waveform generatorthis 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 o