The DSO138 Oscilloscope Kit is designed specifically for electronics education and practical training. It features an ARM Cortex-M3 processor and a color TFT screen, offering a simple yet reliable circuit with moderate assembly difficulty and a high success rate. This kit emphasizes the key components of an oscilloscope, enabling students to gain both hands-on skills and a deeper understanding of oscilloscope structure and principles. Upon completion, students not only enhance their practical skills but also acquire a functional tool for future electronics learning.

Key Features

• Comprehensive Educational Focus:
  Complete documentation including schematics, assembly instructions, usage guidelines, and troubleshooting tips, ensuring a high success rate.
• Varied Component Types:
  Suitable for learning to identify components and practicing soldering of both through-hole and surface-mount devices (SMD).
• Functional Learning Tool:
  Students can use the finished oscilloscope for measuring waveforms in applications such as audio, video synchronization, low-frequency power supplies, and infrared transmission, increasing learning engagement and effectiveness.
• Advanced ARM Platform:
  Powered by an ARM Cortex-M3 processor (STM32F103C8) and includes a 2.4-inch color TFT display, making it suitable as an ARM development board for experimentation.
• Open Source for Customization:
  Source code is provided, enabling advanced users to modify the oscilloscope, such as converting it into a millivoltmeter, data logger, or other custom applications.
• Reliable Circuit and Affordable Price:
  The kit offers a simple and reliable design, making it accessible for a wide range of users.

Specifications

• Maximum Real-Time Sampling Rate: 1Msps
• Resolution: 12-bit
• Sampling Buffer Depth: 1024 bytes
• Analog Bandwidth: 0 – 200KHz
• Vertical Sensitivity: 10mV/Div 5V/Div (1-2-5 increments)
• Vertical Offset Adjustment: With indicator
• Input Impedance: 1M
• Maximum Input Voltage:
  • 50Vpp with 1:1 probe (included)
  • 400Vpp with 10:1 probe (sold separately)
• Coupling Modes: DC / AC / GND
• Time Base Range: 10s/Div 50s/Div (1-2-5 increments)
• Trigger Modes: Auto, Normal, and Single-shot for capturing transient waveforms
• Edge Trigger: Rising and falling edges
• Adjustable Trigger Level: With indicator
• Pre-Trigger Observation: View waveform before trigger (negative delay)
• HOLD Function: Freeze the display at any time
• Test Signal Generator: Built-in 1Hz / 3.3V square wave
• Waveform Parameters Display:
  Shows frequency, period, pulse width, duty cycle, max/min values, average, peak-to-peak, and RMS values.
• Waveform Save/Recall:
  Waveforms remain saved even after power-off.
  • Enable/Disable Parameter Display: Place the cursor at the time base position and long-press the OK button.
  • Save Waveform: Press SEL + + keys simultaneously.
  • Recall Saved Waveform: Press SEL + – keys simultaneously.
• Test Mode:
  Enter by holding the OK button while pressing RESET.
  • If the LED blinks rapidly, it indicates a short circuit on the microcontroller’s PB or PC ports (connected to the LCD). Troubleshoot by checking for short circuits.
  • If the LED blinks every 4 seconds, it suggests an open circuit on the relevant connections. Use a voltmeter to locate the fault, following the instructions in the manual.

Package Contents

• 1 Mainboard
• 1 Component pack
• 1 TFT display screen
• 1 Simple probe
• 1 User manual
• 1 Assembly guide

This DSO138 Oscilloscope Kit offers a perfect blend of education and functionality, making it an essential tool for both learning and practical applications in electronics.