DSO138 2.4" TFT Digital Oscilloscope

Compact Single-Channel Digital Storage: Features an ARM Cortex-M3 processor (STM32F103C8) driving a 200 kHz analog bandwidth and 1 MSa/s real-time sampling rate.

2.4-Inch Color TFT LCD Display: Vibrant 320 x 240 color screen provides real-time waveform visualization, frequency readouts, and parameter displays.

Versatile Coupling & Trigger Modes: Supports AC, DC, and Ground (GND) coupling with Auto, Normal, and Single trigger modes to capture continuous or transient waveforms.

On-Board 1 kHz / 3.3 V Test Signal Generator: Built-in square-wave calibration source allows fast probe compensation and functional self-testing.

Real-Time Parameter Readout: Displays frequency, period, duty cycle, peak-to-peak voltage (V_pp), max/min voltage, average voltage, and RMS voltage directly on-screen.

Waveform Freeze & Storage Function: Dedicated HOLD key freezes active waveforms for detailed visual inspection without interrupting circuit power.

Board & Screen Construction: High-grade double-sided FR4 printed circuit board (PCB) with a mounted 2.4" TFT color LCD display and soldered SMA/BNC input terminal.

Technical Specifications:

Analog Bandwidth: 0 - 200 kHz.

Sampling Rate: 1 MSa/s max.

Vertical Sensitivity: 10 mV/Div - 5 V/Div.

Input Impedance: 1 M ohms / 20 pF.

Maximum Input Voltage: 50 Vpk (1:1 probe).

Power Supply: 9V DC (8 - 12V range).

Assembly & Power Advice: Ensure exact 9 V DC polarity before connecting power to prevent damage to the microcontroller.

Maintenance & Cleaning: Protect circuit traces from dust and static electricity. Clean screen gently with a dry microfiber cloth; avoid solvents.

Essential Entry-Level DIY Oscilloscope: Position as an accessible, hands-on learning tool for electronics students, makers, DIY hobbyists, and circuit prototypers.

Highlight Color TFT Display & Integrated Calibration Source: Emphasize its bright color display and built-in square-wave generator as high-value features for entry-level signal analysis.

Recommended Cross-Sell Add-ons: Pair with Acrylic DSO138 Oscilloscope Casing/Housing, P6100 DC-100MHz Passive Oscilloscope Probe, 1M BNC male to Dual crocodile clamp, Oscilloscope test cable, and 1Hz-60MHz Frequency 200MSa/s 2 channel DDS Function Generator.

Core Bench Starter Star: Display prominently on your Oscilloscopes & Generators collection page as an affordable entry-level digital storage oscilloscope.