Extech MS420 20MHz 2-Channel Digital Oscilloscope
The Extech MS420 is a handheld 2-channel digital oscilloscope with a 20 MHz bandwidth, suitable for general electronics troubleshooting, offering waveform math, USB connectivity and dual-mode oscilloscope plus DMM functionality.
Description
The MS420 from Extech integrates a dual-channel oscilloscope and multimeter into a single portable instrument, tailored to both bench and field usage. With a 20 MHz bandwidth and 100 MS/s sampling rate, it captures a wide range of standard signals while its peak-detect mode (down to ~50 ns) allows for catching fast glitches.In oscilloscope mode, you’ll find functions like auto-set (which auto-adjusts range, timebase and trigger for a stable display), waveform math (add/subtract/multiply/divide channels), persistence mode, averaging, XY mode, FFT, and the ability to store/recall up to four waveform screens and setups.device is powered by a rechargeable Li-ion battery or AC adaptor, making it usable in portable scenarios. Overall, the MS420 offers good functionality for electronics engineers, technicians or hobbyists needing both oscilloscope and multimeter functionality.
Features
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20 MHz bandwidth with two channels, suitable for most basic electronics-signal work.
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100 MS/s real-time sampling rate and ~17.5 ns rise time for decent response to signal edges.
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Peak Detect mode for capturing short-duration glitches (~50 ns) that might be missed by standard modes.
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Waveform Math functions (add, subtract, multiply, divide) for comparing channel signals.
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Persistence and averaging modes to help observe signal stability or dynamic variations.
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Store and recall up to 4 waveform screens and setups, useful when repeating tests or switching tasks.
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USB interface and software included for transferring waveforms/data to a PC for further analysis.
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Integrated multimeter functions: the unit also supports AC/DC voltage, current, resistance, capacitance, diode/continuity measurements—making it a dual-function instrument.
Includes
- Two 1X/10X oscilloscope probes
- Test leads
- Windows XP/Vista compatible USB software and cable
- Capacitor measuring module
- Adjustment screwdriver
- AC adaptor/charger
- Hard carrying case
- User manual
- Manufacturer’s two-year limited warranty
