• MS420
  • Manufacturer has 31 in stock
    This stock is typically available to ship in 3 - 5 working days.



  • 320 x 240 pixel display (3.8" LCD)
  • 20MHz bandwidth
  • 100MS/s real time sample rate
  • 2 channels
  • 6K points per channel record length
  • True RMS multimeter functions
  • AC/DC Voltage: 400mV, 4V, 40V, 400V
  • AC/DC Current: 40mA, 300mA, 20A
  • 6 hour lithium ion rechargeable battery
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The Extech MS420 digital oscilloscope features 20 MHz, 2-channels, an auto-set function that optimizes the position, range, timebase, and triggering to assure a stable display of virtually any waveform. The peak detect function is for 50ns glitch capture XY mode. The Extech MS420 digital oscilloscope has five automatic measurements: frequency, cycle, average, peak to peak, amd RMS.

The Extech MS420 digital oscilloscope performs the following waveform math: add, subtract, multiply, and divide. There is an average mode for smoothing waveforms and persistence mode for observing dynamic signals. The Extech MS400 digital oscilloscope can store and recall up to 4 waveform screens and setups. A USB interface and software for transferring waveforms and data comes standard with the Extech MS420 digital oscilloscope.

The Extech MS420 digital oscilloscope features true RMS multimeter functions including AC/DC voltage and current, resistance, capacitance, diode, and continuity.

The Extech MS420 digital oscilloscopes ship complete with: 1x/10x oscilloscope probes, test leads, AC adapter/charger, hard case, USB software and cable.