Extech MS420...20MHz Dual Channel Digital Oscilloscope User's Manual and Specifications
Summary
This advanced dual-channel digital oscilloscope combines comprehensive waveform analysis with precision multimeter functions. Featuring a robust 20MHz bandwidth, glitch capture, FFT capabilities, and multiple measurement modes, it is designed for industrial circuit troubleshooting and development. This manual provides detailed operational instructions, covering advanced features like waveform math, various trigger settings (Edge, Video), and software integration via USB/PC, making it an essential tool for electronics engineers, technicians, and students testing printed circuit boards (PCBs).
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20MHz 2-Channel Digital Oscilloscope 3.8" (97mm) color LCD display Makes viewing multiple waveforms easy
Features: 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
Specifications 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 Record Length 6K points per channel Glitch Capture 50ns Vertical Sensitivity 5m V 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/20p F Max Input Voltage 400V (peak) Cursor Measurement Voltage and time True RMS Multi Meter Functions AC/DC Voltage 400m V, 4V, 40V, 400V AC/DC Current 40m A, 300m A, 20A Resistance 400Ω, 4kΩ, 40kΩ, 400kΩ, 40MΩ Capacitance 51.2n F to 100μF
A. Complete with two 1X/10X oscilloscope probes, test leads, Windows® 95/98/NT/
Diode and Continuity Yes
2000/ME/XP compatible USB software and cable, capacitor measuring module,
PC Interface USB cable
adjustment screwdriver, AC adaptor/charger, and hard carrying case
Power Supply 6 hours Li-ion rechargeable battery; AC Adaptor/Charger
B. Dual trace testing or troubleshooting of printed circuit boards and
Dimensions/Weight 7 x 4.4 x 1.6" (180 x 113 x 40mm) / 24.3oz (690g)
electronic assemblies C. Software PC screens display analog bargraph and graphical waveform
Ordering Information: MS420............20MHz Dual Channel Digital Oscilloscope
www.extech.com Specifications subject to change without notice. 4/23/10 - R1 Copyright © 2008-09 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
Page Summary Contents For Extech MS420...20MHz Dual Channel Digital Oscilloscope User's Manual and Specifications
Manual Details
| Brand | Dual |
|---|---|
| Pages | 1 |
| File Size | 266.08 KB |
| Published | May 20, 2026 |
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Frequently Asked Questions
What bandwidth does this digital oscilloscope offer?
It features a 20MHz bandwidth.
How can I capture glitch signals?
The device has a Peak Detect function for capturing up to a 50ns glitch.
Does it include multimeter functions?
Yes, it includes True RMS multi-meter functions such as AC/DC voltage and current measurement.
What is the maximum input voltage capability?
The unit supports a maximum input voltage of 400V (peak).
Is software provided for data transfer?
Yes, it comes with USB software compatible with Windows 95/98/NT/2000/ME/XP.