DSO138 Handheld Digital Oscilloscope

The DSO138 handheld digital oscilloscope is a compact and cost-effective signal analysis tool designed for electronics hobbyists, students, and engineers. It is widely used for waveform observation, circuit debugging, and educational purposes. Featuring a built-in TFT display, the device allows real-time visualization of electrical signals and supports basic waveform measurements. Its DIY-friendly design makes it ideal for learning and experimenting with electronic circuits.

Technical Specifications:

• Display: 2.4-inch TFT LCD
  
• Bandwidth: 0 – 200 kHz
  
• Sampling Rate: Up to 1 MSa/s
  
• Input Voltage Range: 0 – 50V (with probe attenuation)
  
• Sensitivity: 10 mV/div to 5 V/div
  
• Time Base: 10 µs/div to 500 s/div
  
• Trigger Modes: Auto, Normal, Single
  
• Power Supply: 9V DC or USB (depending on version)
  
• ADC Resolution: 12-bit
  
• Coupling Modes: AC, DC, GND

Features:

• Compact and portable design
  
• Real-time waveform display
  
• Multiple trigger modes for stable signal capture
  
• Adjustable voltage sensitivity and time base
  
• Built-in signal generator (in some versions)
  
• Easy-to-assemble DIY kit format
  
• Suitable for low-frequency signal analysis
  
• User-friendly interface with onboard controls

Applications:

• Electronics learning and education
  
• Circuit debugging and testing
  
• Signal waveform analysis
  
• DIY electronics projects
  
• Microcontroller and embedded system development
  
• Audio signal testing
  
• Basic laboratory measurements