# MS420 Extech Handheld Digital Oscilloscope New

**Features**

-   Auto-set function optimizes the position, range, timebase, and triggering to assure a stable display of waveforms
-   Peak Detect function for 50ns glitch capture
-   XY Mode and FFT function to view component frequencies
-   Twenty Automatic Measurements including Frequency, Cycle, Average, Peak to Peak, RMS and more
-   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**

-   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: 7x4.4x1.6" (180x113x40mm) / 24.3oz (690g)

Extech's MS420 20 MHz 2-Channel Digital Oscilloscope offers a range of capabilities for effective troubleshooting of electronics and electronically controlled electrical systems. With 20 MHz bandwidth and conveniences like auto-set which optimizes the position, range, time base, and triggering to assure a stable display of virtually any waveform, the MS420 can be used in field repairs or bench duty. To identify subtle problems, Peak Detect features a fast 50 ns glitch capture. Core functions like XY Mode, FFT function, Trigger Hold off, Waveform Math, Averaging Mode and Persistence Mode all ensure you can confidently troubleshoot problems using a variety of approaches. To start up recurring testing routines, you can store and recall up to 4 waveform screens and setups to save time from job to job. This CAT II-rated oscilloscope extends its functionality with complete DMM functions that are displayed on the large 3. 8" (97mm) color LCD display. The MS420 comes with 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, and manufacturer's one-year limited warranty.

## Details

- **Price:** 1199.0 USD
- **Vendor:** Extech
- **Type:** Scope Met
- **Tags:** Extech, Handheld, Manufacturers, Oscilloscopes, product_manual_group_2, Product_new

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1199.00 USD | In stock |

## Images

- MS420 Extech Handheld Digital Oscilloscope

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> Source: [ValueTronics](https://valuetronics.com/products/ms420-extech-handheld-digital-oscilloscope-new)
> Updated: 2026-05-21