FNIRSI DPOS350P Tablet Oscilloscope – 4-in-1 Multifunction Instrument
The FNIRSI DPOS350P is a powerful 4-in-1 multifunction instrument that combines:
- A 350MHz Dual-Channel Digital Phosphor Oscilloscope
- A 50MHz Full-Function Signal Generator
- A 200kHz–350MHz Spectrum Analyzer
- A 50MHz Frequency Response Analyzer
Featuring a 1GSa/s real-time sampling rate, 350MHz analog bandwidth, and an ultra-high waveform refresh rate, the DPOS350P accurately captures and displays complex signals and low-probability anomalies. Its high-resolution touchscreen, intelligent triggering system, and comprehensive measurement functions make it an ideal solution for laboratories, production lines, maintenance, and electronic design applications.
Key Features
● Powerful 4-in-1 Integration
The DPOS350P combines:
- 350MHz Oscilloscope
- 50MHz Signal Generator
- 200kHz–350MHz Spectrum Analyzer
- 50MHz Frequency Response Analyzer
Providing a complete signal testing and analysis solution in a single device.
● High-Performance Signal Capture
- 1GSa/s real-time sampling rate
- 350MHz analog bandwidth (single-channel mode)
- Up to 50,000 waveforms per second refresh rate
Enabling accurate capture of transient and low-probability signals.
● Professional Display & Operation
- 7-inch IPS full-view touchscreen
- 1024 × 600 resolution
- Grayscale and color-temperature display modes
Ensuring clear waveform visualization and intuitive operation in various working environments.
● Advanced Signal Generation & Analysis
- Built-in 50MHz signal generator
- Supports 14 standard waveforms
- Custom waveform generation supported
The integrated spectrum analyzer covers:
200kHz to 350MHz
Making it suitable for:
- EMI testing
- RF analysis
- High-frequency signal diagnostics
● High-Voltage Protection & Fast Charging
- Overvoltage protection up to 400V
- QC18W fast charging support
Allowing safe operation and rapid charging for extended use.
● Convenient Data Storage & Export
- Stores up to 500 waveform groups
- Saves up to 90 screenshots
- USB data export support
For easy analysis, documentation, and report generation.
Oscilloscope Specifications
| Specification | Value |
|---|---|
| Channels | Dual Channel |
| Bandwidth | 350MHz |
| Max Sampling Rate | 1GSa/s |
| Rise Time | 1ns |
| Memory Depth | 60Kpts |
| High Resolution Mode | 8Bit – 16Bit |
| Overvoltage Protection | Up to 400V |
| Input Impedance | 1MΩ / 14pF |
| Probe Attenuation | 1X / 10X / 100X |
| Vertical Sensitivity | 2mV – 20V (1X) |
| Vertical Range | 16mV – 160V (1X) |
| Time Base Range | 5ns – 50s |
| Roll Time Base | 50ms – 50s |
| Input Coupling | DC / AC |
| DC Accuracy | ±2% |
| Time Accuracy | ±0.01% |
| Automatic Measurements | 12 Types |
| Cursor Measurements | Time, Period, Frequency, Level, Voltage |
| Simple FFT | Supported |
| X-Y Mode | Supported |
| Zoom Time Base | Supported |
| Digital Phosphor Display | Supported |
| Waveform Brightness | Adjustable |
| Color Temperature Display | Supported |
| One-Key Auto Setup | Supported |
| One-Key Zero Reset | Supported |
| Screenshot Storage | 90 Images |
| Waveform Storage | 500 Groups |
| Data Browser | Supported |
Trigger Functions
| Specification | Value |
|---|---|
| Trigger Type | Digital Trigger |
| Trigger Channel | CH1 / CH2 |
| Trigger Modes | Auto / Normal / Single |
| Trigger Edge | Rising / Falling |
| Trigger Level | Manual or Auto (10%–90%) |
| Trigger Holdoff | L1 – L3 |
Hardware Bandwidth Limits
| Mode | Value |
|---|---|
| Bandwidth Limit | 20MHz / 150MHz |
Signal Generator Specifications
| Specification | Value |
|---|---|
| Waveform Types | 14 Standard Waveforms + Captured Waveforms |
| Frequency | Up to 50MHz (Sine Wave) |
| Other Waveform Frequencies | Up to 10MHz / 5MHz / 3MHz |
| Amplitude | 0 – 5Vpp |
| Offset | -2.5V to +2.5V |
| Frequency Resolution | 1Hz |
| Amplitude Resolution | 1mV |
| Offset Resolution | 1mV |
| Duty Cycle | 0.1% – 99.9% |
| Duty Cycle Resolution | 0.1% |
| Custom Waveform Storage | 500 Groups |
Frequency Response Analyzer Specifications
| Specification | Value |
|---|---|
| Excitation Frequency | 100Hz – 50MHz |
| Excitation Amplitude | 0 – 5Vpp |
| Excitation Offset | -2.5V to +2.5V |
| Frequency Points | 20 – 500 |
| Cursor Measurements | Frequency, Gain, Phase |
| Operating Modes | Single / Cyclic |
| System Calibration | Supported |
Spectrum Analyzer Specifications
| Specification | Value |
|---|---|
| Conversion Method | FFT |
| FFT Length | 4K – 32K |
| Frequency Range | 200kHz – 350MHz |
| Level Range | -60dBmV to +260dBmV |
| Cursor Measurements | Frequency, Amplitude |
| Maximum Energy Harmonic Marker | Supported |
| Waterfall Display | Supported |
| 3D Waterfall Display | Supported |
| Auto Adjustment | Supported |
| System Calibration | Supported |
General Specifications
| Specification | Value |
|---|---|
| Power-On Presets | 5 Configurations |
| Charging Requirement | QC18W – 12V / 1.5A |
| Languages | Chinese, English, Russian, Portuguese |
| Battery | 3.7V Lithium Battery, 8000mAh |
| Operating Time | Approximately 3 Hours |
| Charging Time | Approximately 5 Hours |
| Power Consumption | 10W |
| Cooling System | Air Cooling |
| Dimensions | 190 × 128 × 37 mm |
| Display | 7-Inch IPS Full Viewing Angle |
| Resolution | 1024 × 600 Pixels |
| Touch Interface | Capacitive Touchscreen |
| Auto Power-Off | 15 Minutes – 1 Hour / Disabled |
| Firmware Upgrade | Supported via ISO Image |
Product Overview
The FNIRSI DPOS350P is a professional all-in-one testing instrument designed for engineers, technicians, researchers, and electronics enthusiasts. Combining oscilloscope, signal generation, spectrum analysis, and frequency response analysis capabilities into a single portable device, it delivers powerful performance, advanced measurement functions, and exceptional versatility for laboratory research, production testing, troubleshooting, and RF applications.

Dual USB current & voltage detection 
























