Fnirsi FR DSO153 1MHz Single-Channel Digital Oscilloscope

Specifications:

• Bandwidth: 1 MHz

• Sample Rate: Typically around 1 MSa/s (may vary depending on the model)

• Display: 2.4-inch or 2.8-inch TFT color LCD

• Input Voltage Range: Typically ±50V or less (often limited to 0–50V with protection circuitry)

• Input Impedance: ~1MΩ

• Time Base Range: 10µs/div to 500s/div (varies slightly by model)

• Vertical Sensitivity: 10mV/div to 5V/div

• Trigger Modes: Auto, Normal, and Single

• Power Supply: Usually 9V DC (battery or adapter)

🧰 Use Cases:

• Viewing analog signals in the audio or low-RF frequency range.

• Debugging low-speed microcontroller signals.

• Educational demos for signal behavior and waveforms.

• Hobby electronics (Arduino, Raspberry Pi, etc.).

📦 Common Features:

• Save and recall waveforms.

• Freeze display (HOLD function).

• Real-time waveform display.

• Square wave signal generator for probe testing (on some units).

⚠️ Limitations:

• Limited bandwidth: Only useful for low-frequency signals (below 1MHz).

• Single channel: Can’t compare two signals at once.

• Not suitable for professional high-speed or precision diagnostics.