FNIRSI DSO-153 Mini Digital 2-in-1 Oscilloscope Waveform & Signal Generator

The FNIRSI DSO-153 is a compact 2-in-1 handheld digital oscilloscope and DDS signal generator designed for basic signal testing, electronics troubleshooting, and educational use. Despite its small size, it offers reliable waveform visualization with a 1MHz bandwidth and 5MS/s real time sampling rate, making it suitable for low frequency signal analysis and routine diagnostics. 

It features a 2.8″ color LCD display, one click AUTO waveform configuration, and multiple trigger modes for easy measurement of analog and digital signals. The built in function generator can output multiple waveform types up to 10kHz, allowing users to both generate and analyze signals with a single portable device.

With a built in 1000mAh rechargeable battery, USB C charging, and pocket size design, the DSO-153 is ideal for technicians, students, and electronics hobbyists who need a portable and affordable testing tool.

Highlights:

• 2-in-1 device: Digital oscilloscope + DDS signal generator.
  
• 1MHz bandwidth with 5MS/s sampling rate.
  
• 14 waveform types from built in signal generator.
  
• 2.8″ TFT color display (320×240) for clear waveform viewing.
  
• One click AUTO configuration for quick waveform detection.
  
• Multiple trigger modes: Auto / Normal / Single.
  
• Supports analog and digital signal measurement.
  
• USB C charging with built in rechargeable battery.
  
• Portable pocket size handheld design.

Specifications:

General

• Model: FNIRSI DSO-153.
  
• Display: 2.8″ TFT LCD (320×240).
  
• Battery: 1000mAh rechargeable lithium battery.
  
• Charging: USB C (5V/1A).
  
• Operating Time: ~4 hours per charge.
  
• Dimensions: ~99×68.3×19.5mm.
  
• Weight: ~200g.

Oscilloscope

• Channels: 1.
  
• Bandwidth: 1MHz.
  
• Sampling Rate: 5MS/s.
  
• Vertical Sensitivity: 10mV/div - 10V/div.
  
• Time Base Range: 500ns/div - 20s/div.
  
• Voltage Range: ±40V (1× probe), ±400V (10× probe).
  
• Trigger Modes: Auto / Normal / Single.
  
• Coupling: AC / DC.

Signal Generator

• Output Frequency: 0-10kHz.
  
• Waveforms: 14 types (sine, square, sawtooth, step, noise, etc.).
  
• Output Amplitude: 0.1-3.3V.
  
• Duty Cycle: 0-100% (for square/sawtooth waves).

Ideal For:

• 🔧 Electronics repair and circuit diagnostics.
  
• 📡 Basic signal waveform analysis.
  
• 🧪 Educational electronics laboratories.
  
• 🧰 Field maintenance and troubleshooting.
  
• 🎓 Students and beginner electronics engineers.
  
• ⚙️ DIY electronics and Arduino projects.