Extech MS420 Handheld Digital Oscilloscope

Overview

The Extech MS420 is a 2-channel handheld digital oscilloscope with 20MHz bandwidth designed for field and bench troubleshooting of electronics and electronically controlled systems. It features a large 3.8-inch color LCD display and includes integrated digital multimeter functions, making it a versatile portable test tool for technicians and engineers.

Key Features

• 20MHz bandwidth with 2-channel simultaneous measurement
• 3.8-inch (97mm) color LCD display
• Auto-set function optimizes position, range, timebase, and triggering for stable waveform display
• Peak Detect function for fast 50ns glitch capture
• Five automatic measurements: frequency, duty cycle, average, peak-to-peak, and RMS
• Waveform math operations: add, subtract, multiply, divide
• Average mode for waveform smoothing and persistence mode for dynamic signal observation
• XY mode and FFT function for advanced signal analysis
• Store and recall up to 4 waveform screens and setups
• Integrated DMM functions with full multimeter capabilities
• CAT II-rated for safety

Applications

• Field repair and troubleshooting of electronic equipment
• Bench testing and signal verification
• Automotive electrical system diagnosis
• HVAC and industrial equipment testing
• Quality assurance and production testing

Included Accessories

• Two 1X/10X oscilloscope probes
• Test leads
• USB cable and Windows-compatible software
• Capacitor measuring module
• Adjustment screwdriver
• AC adapter/charger
• Hard carrying case
• User manual and one-year limited warranty