... Dual Input Channels Advanced Trigger Functions Automatic Measurement Replaceable Li-ion Battery Back-up LCD back-light adjustment Support 3.8 ... time ) 250MS/s Rise time ≤5.8ns Display 3.8 Inch color display with TFT panel(320x240 pixels, Channel Dual ... ,+Width,-Width,+Duty, -Duty, Delay A→B , Delay A→B Waveform math +,-,×,÷, Inverted Digital Multimeter Testing Voltage, Current, Resistance, Capacitance, ...