FNIRSI DSO-153 DuoScope – 2-in-1 Mini 1MHz 5MS/s Digital Oscilloscope & Signal Waveform Generator

? Precision Meets Portability – All in One Pocket Device

The FNIRSI DSO-153 DuoScope redefines what’s possible in a handheld test instrument by integrating a digital storage oscilloscope and a signal waveform generator into a single, compact unit. Whether you're a hobbyist, student, engineer, or field technician, the DSO-153 offers professional-level performance in a form factor small enough to fit in your pocket.

With 1MHz analog bandwidth, 5 million samples per second (5MS/s) real-time sampling, and a versatile function generator, this is the ideal multi-tool for signal visualization, diagnostics, simulation, and education. The DSO-153 delivers both measurement and stimulation in one go — helping you understand, build, and troubleshoot circuits faster than ever.

? Oscilloscope Specifications & Capabilities

⚡ Core Oscilloscope Features

• Analog Bandwidth: 1MHz – Designed for low-frequency analog and digital circuit diagnostics

• Real-Time Sampling Rate: 5MS/s – Captures fast transitions and small signal variations accurately

• Input Voltage Range: DC 0 – 40V (with input protection circuit)

• Vertical Sensitivity: 50mV/div ~ 20V/div

• Time Base Range: 50μs/div to 1000s/div

• Vertical Resolution: 12-bit ADC – Enables high waveform resolution, especially for slow-moving signals

• Trigger Modes: Auto, Normal, Single

• Trigger Types: Rising/Falling Edge Trigger

• Display Update Rate: Fast enough for real-time analysis of slow waveforms and repetitive signals

• Built-in Measurement Tools: Frequency, Period, Peak-to-Peak Voltage (Vpp), RMS, Duty Cycle, Vavg, Vmin, Vmax

? Waveform Recording & Analysis

• Ability to freeze waveforms, scroll through captured data, and measure with on-screen cursors

• Useful for observing serial data lines (UART), PWM signals, analog sensor output, and general electronics debugging

? Function/Signal Generator Specifications

? Signal Generator Features

• Signal Types: Sine, Square, Triangle, Sawtooth, Pulse

• Frequency Range: 1Hz to 1MHz

• Amplitude Control: Adjustable output voltage level for safe signal injection

• Output Impedance: Low impedance for clean signal transmission

• Use Cases: Circuit excitation, filter testing, op-amp behavior observation, waveform injection for response analysis

• Signal generation works simultaneously with oscilloscope mode in most firmware versions

? Display & User Interface

• Screen Type: High-resolution full-color TFT LCD

• User Interface: Clear, menu-driven UI with icons, graphs, and real-time value display

• Navigation: Dedicated hardware buttons for easy control, waveform scrolling, and settings adjustment

• Auto Setup Function: One-touch automatic adjustment of time/div, voltage/div, and trigger level

• Waveform Memory: Store and recall previously captured waveforms (based on firmware revision)

? Power & Portability

• Battery Type: High-capacity rechargeable lithium-ion battery

• Charging Method: USB Type-C or Micro-USB depending on version

• Battery Life: Up to 6 hours of active usage on a single charge

• Compact Size: Fits easily into shirt pockets, pouches, toolkits, and lab drawers

• Weight: Under 200g – light enough for all-day use in the field

• Body Material: ABS+PC blend casing for lightweight durability

? Ideal Use Cases

?‍? For Students & Educators

• Demonstrate wave behavior, time domain signals, and frequency characteristics in real time

• Use generator output to excite RC circuits, op-amp filters, and digital logic gates in class

?‍? For Engineers & Technicians

• Quickly test analog sensors, microcontroller outputs, UART/SPI/I2C signals

• Simulate circuit inputs and verify expected output responses

• Measure ripple in power supplies and identify glitches or dropouts

?‍? For Hobbyists & Makers

• Diagnose Arduino and Raspberry Pi projects

• Monitor PWM motor controls, LED dimmers, and power drivers

• Inject test signals into homebrew circuits and audio equipment