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Extech MS420 20MHz 2-Channel Digital Oscilloscope

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Extech MS420 20MHz 2-Channel Digital Oscilloscope


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Extech MS420 20MHz 2-Channel Digital Oscilloscope

Extech MS420 20MHz 2-Channel Digital Oscilloscope



MS420 20MHz 2-Channel Digital Oscilloscope by Extech

5.6" (142mm) graphical color LCD for viewing multiple waveforms plus built-in digital multimeter display and analog bargraph.


  • 20MHz bandwidth
  • Auto-set function optimizes the position, range, timebase, and triggering to assure a stable display of virtually any waveform
  • Peak Detect function for 50ns glitch capture
  • XY Mode
  • FFT function to view component frequencies
  • Trigger Holdoff function stabilizes complex waveforms
  • Twenty Automatic Measurements
  • Waveform Math: Add, Subtract, Multiply, and Divide
  • Average Mode for smoothing waveforms
  • Persistence Mode for observing dynamic signals
  • Store and recall up to 4 waveform screens and setups
  • USB interface and software for transferring waveforms and data
Oscilloscope Functions
Display Size 3.8" (96mm) color LCD; 320 x 240 pixels
Bandwidth 20MHz
Real time sample rate 100MS/s
Risetime 17.5ns
Channels 2
Record Length 6K points per channel
Glitch Capture 50ns
Vertical Sensitivity 5mV to 5V/div
Vertical Resolution 8 bits
Timebase Range 5ns to 5s/div
Sample Mode Sample, Average, Peak Detect
Trigger Modes Free Run, Single Shot, Edge, Video
Trigger Source CH1, CH2
Trigger Coupling AC, DC
Input impedance 1MΩ/20pF
Max Input Voltage 400V (peak
Cursor Measurement Voltage and time
True RMS MultiMeter Functions
AC/DC Voltage 400mV, 4V, 40V, 400V
AC/DC Current 40mA, 300mA, 20A
Resistance 400Ω, 4kΩ, 40kΩ, 400kΩ, 40MΩ
Capacitance 51.2nF to 100μF
Diode and Continuity Yes
PC Interface USB cable
Power Supply 6 hours Li-ion rechargeable battery; AC Adaptor/Charger
Dimensions/Weight 7 x 4.4 x 1.6" (180 x 113 x 40mm) / 24.3oz (690g)

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