... interface for communication with the computer2 reference memories, simultaneous display 4 waveform informationMeasure and display Single shot, Non-period Signals Specifications ... coupling AC, GND, DCVertically CH1,CH2,DUAL,ADDTriggeringTriggering sourceCH1,CH2,LINE,EXT,ALTCouplingAC:20Hz to 20MHzTrigger modeAUTO,NORM,TV-V,TV ...