DSO138 Digital Oscilloscope With TFT 2.4" Display

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DSO138 digital oscilloscope is a popular DIY digital oscilloscope kit. It's a low-cost oscilloscope designed for electronics enthusiasts and hobbyists to build their own oscilloscope for personal use.

A digital storage oscilloscope (often abbreviated DSO) is an oscilloscope that stores and analyses the signal digitally. It is now the most common type of oscilloscope in use because of the advanced trigger, storage, display and measurement features that it typically provides.

DSO138-1.jpg

This kit includes everything you need to build your very own, fully functional, digital oscilloscope. Once you have got it up and running, the oscilloscope features up to 5M samples/second, 8-bit resolution, up to 50Vpp max input voltage, and more.

This kit includes a semi-populated PCB, with all of the surface mount components already soldered on for you. The components left for you to solder are all through-hole. This is on the higher end of difficulty as far as through-hole kits go.

DSO138 Digital Oscilloscope Features:

  • This kit uses ARM Cortex-M3 processor, and includes a 2.4-inch color TFT display screen.
  • With automatic, regular and one-shot modes, easy to capture the moment waveform
  • Can be secondary developed to millivolt meter, data loggers
  • Adjustable vertical displacement, and with instructions
  • Available rising or falling edge trigger
  • Observable previous trigger waveform (negative delay)
  • Can freeze at any time waveform display (HOLD function)
  • Comes 1Hz / 3.3V square wave test signal source
  • Waveform storage: not lose the waveform after power off
  • Short-circuit and open-circuit detection: can help the user find out the soldering error

Specifications of DSO138 Digital Oscilloscope:

  • MCU: ARM Cortex-M3 (STM32F103C8 )
  • Number of Channels: 1 Channel
  • Analog Bandwidth: 0 ~ 200KHz
  • Sensitivity: 10mV/Div ~ 5V/Div
  • Input Impedance: 1MΩ
  • Accuracy: < 5%
  • Resolution: 12 bit
  • Maximum Measuring Voltage: 50Vpp (1: 1 probe), 400Vpp (10: 1 probe)
  • Coupling: DC, AC, GND
  • Max Real-time Sampling Rate: 1Msps
  • Time-base: 10us/Div ~ 500s/Div
  • Record Length: 1024
  • Trigger Modes: Auto, Normal, Single
  • Trigger Types: Rising/falling edge
  • Trigger Position: 1/2 of buffer size fixed
  • Display:4-inch color TFT LCD with 320 x 240 resolution
  • Input Voltage: 8V ~ 12V
  • Recommended Input Voltage: 9V
  • Input Current: 120mA
  • Size: 117mm x 76mm x 15mm

DSO138 Digital Oscilloscope Package content:

  • 1 x DSO138 2.4″ TFT Digital Oscilloscope Kit
  • 1 x Oscilloscope Cable
  • DSO138-2.jpg

Connection ports of DSO138 Digital Oscilloscope

At the top of the DSO138 Digital Oscilloscope, there are a connector for probe and two different type power connector. At the bottom side, there are UART and ICSP header-pins-type connectors and a mini-USB connector for STM32 microcontroller firmware flashing.

 DSO138 ports.jpg

Calibration and usage guide of DSO138 Digital Oscilloscope

Here are some helpful documents to get started with DSO138 Digital Oscilloscope:

You can find more information on the DSO138 manufacturer's website.

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