Digital oscilloscope

Features:
This kit uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.
Can be secondary development on the basis of this kit, for example, it can be changed to Millivoltmeter, data loggers.
Adjustable vertical displacement, and with instructions.
With automatic, regular and one-shot modes, easy to capture the moment waveform.
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.
With waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.
Waveform storage function: will not lose the waveform after power off.
Short-circuit and open-circuit detection: can help the user find out the soldering error.
TFT controller recognition function.

Specifications:
Maximum Real-time Sampling Rate: 1Msps
Accuracy: 12Bit
Sampling Buffer Depth: 1024 bytes
Analog Bandwidth: 0-200KHz
Vertical Sensitivity: 10mV / Div – 5V / Div (1-2-5 progressive manner)
Input Impedance: 1MΩ
Maximum Input Voltage: 50Vpp (1: 1 probe), 400Vpp (10: 1 probe)
Coupling Modes: DC / AC / GND
The Horizontal Time Base Range: 10μs / Div – 50s / Div (1-2-5 progressive manner)
Supply Voltage: DC 9V
PCB Size: 117 * 76mm / 4.6 * 3in
Screen Size: 52 * 40mm / 2 * 1.57in
Package Size: 18 * 12.5 * 3cm / 7.08 * 4.92 * 1.18in

Tips:
This DIY kit is  soldered ! (With Transparent shell)

The method of opening/closing waveform parameters display: put the cursor at the time base position, and long press the [OK] key.
Save waveform method: press [SEL] and [+] at the same time.
The method of calling out saved waveform: press [SEL] and [-] at the same time.
Method to enter the test mode: press [OK] and press [RESET] button. If you see the LED flash quickly, it means that the PB or PC port of the single-chip computer (these ports contain the connection with the LCD) has a short circuit, which needs to be found and removed. If you see an LED flashing in a period of about 4 seconds, you can use a voltmeter to find possible openings in the connection lines related to the MCU port. Please refer to the instructions for details.

Package Included:
1 * DSO138 DIY Digital Oscilloscope Kit
1 * Probe
3 * User Manual(English)

Note:
1. Due to the light and screen difference, the item’s color may be slightly different from the pictures.
2. Please allow 0.5-2 cm differences due to manual measurement.