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Extra special $40 off coupon 350P40, click to copy!
✅ Currently in stock at US warehouse!
⏳ EU warehouse out of stock. Shipping will start Mid-August after inventory arrives, helping customers save ~30% import taxes.
📁 Manuals & FirmwaresDownload
Highlights
◉ 4-in-1 Multifunctional Design: Combines oscilloscope, spectrum analyzer, frequency response analyzer, and signal generator in one portable device, ideal for R&D, repair, and education.
◉ Compact & Portable: A5-sized front panel with foldable rear stand for easy desktop use and carrying.
◉ Large HD Touchscreen: 7" 1024×600 IPS touchscreen with smooth waveform display, zoom, 16-bit resolution, and adaptive trigger suppression for accurate signal capture in noisy environments.
◉ Comprehensive Safety Protection: Supports up to 400V high-voltage input with overvoltage protection, multi-stage isolation, burn protection, voltage regulation, and ESD suppression circuits.
◉ Fast Charging & Long Battery Life: Built-in 4000mAh battery with 18W QC fast charging; fully charges in about 2 hours for heavy use.
◉ High Performance: 1GSPS real-time sampling, 350MHz analog bandwidth (single channel), and 50,000 wfms/s waveform refresh rate.
The FNIRSI DPOS350P is a professional 4-channel digital oscilloscope with high bandwidth, high sampling rate, and advanced signal analysis capabilities. Featuring touchscreen control, intelligent triggering, and multiple measurement modes, it delivers accurate waveform analysis for laboratory testing, electronic design, and industrial maintenance.
Features
- 4-in-1 Multi-Function Test Platform: The DPOS350P integrates a 350MHz digital oscilloscope, 50MHz signal generator, 200K~350MHz spectrum analyzer, and 50MHz frequency response analyzer, providing a complete solution for signal measurement, analysis, and testing.
- High-Speed Waveform Capture: Featuring 1GSPS real-time sampling rate, 350MHz analog bandwidth (single-channel mode), and 50,000 wfm/s waveform refresh rate, it captures fast-changing and low-probability abnormal signals with high accuracy.
- 7-Inch HD Touchscreen Display: The 1024×600 IPS touchscreen delivers clear waveform visualization with grayscale and color temperature modes, enabling efficient operation in different testing environments.
- Advanced Signal Generation & Analysis: The built-in 50MHz signal generator supports 14 standard waveforms and custom waveform output. The spectrum analyzer covers 200K~350MHz for EMI testing, RF signal analysis, and high-frequency measurements.
- 400V Protection & Fast Charging: Designed with 400V high-voltage input protection and QC18W fast charging, the DPOS350P provides safer operation and up to 2-hour full charging.
- Data Storage & USB Export: Supports storage of up to 500 waveform files and 90 screenshots, with USB data export for convenient waveform analysis and test report creation.
Specifications
Basic Parameters:
Power-on configuration
5 preset items
Charging requirements
QC18W - 12V/1.5A (Type-C)
Languages
Chinese / English / Russian / Portuguese
Battery specifications
3.7V, 8000mAh lithium battery
Screen technology
7" IPS Screen, 1024 x 600 pixels
Standby time
~3 hours
Total power consumption
10W
Charging time
Startup ≈ 5 Hours
Interaction mode
capacitive touch screen
Heat dissipation
Air cooling
Expansion interface
USB data port
Dimensions
190mm*128mm*37mm
Automatic shutdown
15 minutes ~ 1 hour / off
Firmware upgrade
Support .iso image upgrade
Oscilloscope Parameters:
Channels
2CH
Bandwidth
350MHz
Rise time
1ns
Max sampling rate
1GSa/s
Memory depth
47Kpts
Input impedance
1MΩ / 14PF
Time base range
5ns ~ 50s
Roll time base
50ms ~ 50s
Vertical sensitivity
2mV ~ 20V(1X)
Vertical range
16mV ~ 160V(1X)
DC accuracy
±2%
Time accuracy
±0.01%
Input coupling
DC / AC
Probe attenuation
1X / 10X / 100X
Hardware bandwidth limit
150M / 20M
High resolution mode
8bit ~ 16bit
Parameter measurements
12 types
Cursor measurement
Time, Period, Frequency, Level, Voltage
Trigger detection
Digital trigger
Trigger channel
CH1/CH2
Trigger mode
Auto / Single / Normal
Trigger edge
Rising edge / Falling edge
Trigger suppression
L1 ~ L3
Trigger level
Manual / Automatic 10% ~ 90%
Screenshot storage
90 pictures
Waveform storage
500 groups
Background grid
display / hide
Waveform movement
Coarse adjustment / Fine adjustment
Overvoltage protection
Withstand voltage 400V
Waveform brightness
Adjustable
Simple FFT display
✔
Digital fluorescence
✔
Color temperature display
✔
X-Y mode
✔
ZOOM time base
✔
One-key automatic adjustment
✔
One-key return to zero
✔
Data browser
✔
Signal Generator Parameters:
Waveform types
14 standard functions + captured waveform
Frequency
0 ~ 50MHz(sine wave only, other waveforms up to 10M/5M/3M)
Amplitude
0 ~ 5VPP
Offset
-2.5V ~ +2.5V
Duty cycle
0.1% ~ 99.9%
Frequency resolution
1Hz
Amplitude resolution
1mV
Offset resolution
1mV
Duty cycle resolution
0.1%
Customizable captured waveform
500 groups
Frequency Response Analyzer Parameters:
Excitation signal frequency
10Hz ~ 50MHz (Latest firmware)
Excitation signal amplitude
0 ~ 5VPP
Excitation signal offset
-2.5V ~ +2.5V
Excitation frequency count
20 ~ 500
Cursor measurement
Frequency / Gain / Phase
Operating mode
Single / Cyclic
System calibration
✔
Spectrum Analyzer Parameters:
Conversion method
FFT
FFT length
4K ~ 32K
Frequency range
200KHz ~ 350MHz
Level range
-60dBmV ~ +260dBmV
Cursor measurement
Frequency / Amplitude
Marking parameter
Maximum energy harmonic
Waterfall chart
✔
3D waterfall chart
✔
Automatic adjustment
✔
System calibration
✔
⚠ Special Precautions
- Both channel probe grounds must be connected to the same potential. Different ground potentials may cause short circuits and damage the oscilloscope.
- Maximum BNC input voltage: 400V (with 1X probe).
- Use the included charger only. Avoid USB or other equipment power sources.
- Use 100X/1000X probes for high-voltage and high-frequency measurements.
Package List:
◉ DPOS350P Host *1
◉ QC18W Fast Charger *1 (US or EU Plug)
◉ 350MHz Probe *2
◉ Storage Bag *1
◉ Alligator Clip *1
◉ USB Data Cable *1
◉ User Manual *1
◉ Packing Box *1
◉ QC18W Fast Charger *1 (US or EU Plug)
◉ 350MHz Probe *2
◉ Storage Bag *1
◉ Alligator Clip *1
◉ USB Data Cable *1
◉ User Manual *1
◉ Packing Box *1
Using Environment and Precautions
The device should be stored in a soft case, and the operating environment should be at a temperature of -5~40℃, and the relative humidity should not exceed 80%.
The device should be stored in a clean and dry place to avoid moisture, mold, heavy pressure, mechanical damage,humidity and direct sunlight.
Avoid using in the rain or fog, avoid dropping or shocking.
When the screen on the LCD does not light up, it indicates that the voltage is too low, and it needs to be charged in time.
Copyrights
The product specifications are subject to change without notice, allfinal interpretation rights were reserved by FNIRSI Technology Co., Ltd, All trademarks, product images, technical parameters are properties of FNIRSI Technology Co.. Ltd. All rights reserved.
Warranty
30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from fnirsi.com), lifetime technique support by FNIRSI.
Please feel free to reach us with any concerns:
Email: service@fnirsi.com / info@fnirsi.com
We strive to reply to you within 24 hours.
FNIRSI has started researching and development manufacturer of quality optical products including Golf rangefinder, laser,measure device and binoculars since 2016.
Focus on the development,researching, and manufacturing for over 8 years.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.
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What is the 30-Day Price Guarantee?
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If you notice that the price of a product you purchased from fnirsi.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:
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