FNIRSIยฎ DPOS350P 4-IN-1 350MHz 1GSPS Tablet Oscilloscope Signal Generator Spectrum Analyzer Frequency Response Analyzer

$279.99 USD
$369.99 USD
$279.99 USD
Save $90.00
Extra special $40 USD off coupon ๏ปฟ350P40, click to copy!
๏ปฟโœ… Currently in stock at US warehouse! ๐Ÿ“ฆ The EU region need to wait for products to arrive at local warehouses to avoid high tariffs.
Plug: US Plug
๐Ÿ“ Manuals & FirmwaresDownload

Highlights

โ—‰ 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.

โ—‰ Compact & Portable: A5-sized front panel with foldable rear stand for easy desktop use and carrying.

โ—‰ Large HD Touchscreen: 7" 1024ร—600 IPS touchscreen with smooth waveform display, zoom, 16-bit resolution, and adaptive trigger suppression for accurate signal capture in noisy environments.

โ—‰ Comprehensive Safety Protection: Supports up to 400V high-voltage input with overvoltage protection, multi-stage isolation, burn protection, voltage regulation, and ESD suppression circuits.

โ—‰ Fast Charging & Long Battery Life: Built-in 4000mAh battery with 18W QC fast charging; fully charges in about 2 hours for heavy use.

โ—‰ High Performance: 1GSPS real-time sampling, 350MHz analog bandwidth (single channel), and 50,000 wfms/s waveform refresh rate.

FNIRSIยฎ DPOS350P 4 - IN - 1 350MHz 1GSPS Tablet Oscilloscope Signal Generator Spectrum Analyzer Frequency Response Analyzer - FNIRSI

FNIRSIยฎ DPOS350P 4-IN-1 350MHz 1GSPS Tablet Oscilloscope Signal Generator Spectrum Analyzer Frequency Response Analyzer

$369.99 $279.99

FNIRSIยฎ DPOS350P 4-IN-1 350MHz 1GSPS Tablet Oscilloscope Signal Generator Spectrum Analyzer Frequency Response Analyzer

$369.99 $279.99
Plug: US Plug
๐Ÿšจ Please note: if the package is returned or destroyed due to unpaid customs duties, no refund will be issued under this circumstances. The United States and EU countries (Except Malta and Cyprus) are duty-free because they are shipped from local warehouses, while other countries may incur tariffs.
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๐ŸŽ We will give each customer one case per machine as a gift, which will be sent together with the goods.
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The DPOS350P is a high-performance, feature-rich all-in-one oscilloscope, suitable for a wide range of industrial and research applications. With its powerful integrated design, high sampling rate, and wide bandwidth, it can accurately analyze complex signals, provide clear waveform display, and smart triggering. The built-in high-resolution display, touch operation, intelligent triggering, and multiple measurement modes make it a precise and reliable tool for testing and analysis in laboratories, production lines, and maintenance sites.
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Features

  • Powerful multi-function integration: The DPOS350P combines a 350MHz oscilloscope, 50MHz signal generator, 200K~350MHz spectrum analyzer, and a 50MHz frequency response analyzer to meet various signal testing needs.
  • High-performance waveform capture: With a 1GSPS real-time sampling rate, 350MHz analog bandwidth (single-channel mode), and an ultra-high 50,000 wfm/s waveform refresh rate, it can accurately capture and display low-probability anomaly signals.
  • Fine display and operation: Equipped with a 7-inch 1024x600 high-resolution IPS touchscreen, it provides clear waveform display and supports grayscale and color temperature mode switching, making it easy to operate in different testing environments.
  • Rich signal generation and analysis capabilities: The built-in 50MHz signal generator supports 14 standard waveforms and custom waveform functionality, while the spectrum analyzer covers a frequency range of 200K~350MHz, ideal for EMI, RF, and high-frequency signal testing.
  • High-voltage protection and fast charging: The device has a high-voltage protection design up to 400V for safety, and with QC18W fast charging technology, it can be fully charged in 2 hours, ensuring long-term stable operation.
  • Convenient data storage and export: It supports up to 500 waveform data storage and 90 image storage, and has USB data export functionality for easy analysis and report generation.

Specifications

Basic Parameters:

Brand
FNIRSI
Model
DPOS350P
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 size
7 inches
Standby time
about 3 hours
Screen resolution
1024 x 600 pixels
Charging time
Startup โ‰ˆ 5 Hours
Screen technology
IPS full viewing angle
Total power consumption
10W
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
Storage Temperature Range
-20~60โ„ƒ
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Oscilloscope Parameters:

Analog Channels
2
Analog bandwidth
350MHz
Rise time
1nS
Max sampling rate
1GSPS
Memory depth
60Kpts
Input impedance
1Mฮฉ / 14PF
Time base range
5nS ~ 50S
Roll time base
50mS ~ 50S
Vertical sensitivity
2mV ~ 20V(1X)
Vertical range
16mV ~ 160V(1X)
DC accuracy
ยฑ2%
Time accuracy
ยฑ0.01%
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
support
Digital fluorescence
support
Color temperature display
support
X-Y mode
support
ZOOM time base
support
One-key automatic adjustment
support
One-key return to zero
support
Data browser
support
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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
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Frequency Response Analyzer Section:

Excitation signal frequency
100Hz ~ 50MHz
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
support
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Spectrum Analyzer Part:

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
support
3D waterfall chart
support
Automatic adjustment
support
System calibration
support
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Package List:

โ—‰ DPOS350P Host *1
โ—‰ QC18W Fast Charger *1 (US or EU Plug)
โ—‰ 350MHz Probe *2
โ—‰ Storage Bag *1
โ—‰ Alligator Clip *1
โ—‰ USB Data Cable *1
โ—‰ User Manual *1
โ—‰ Packing Box *1
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โš  Special Precautions

  • When using both channels simultaneously, the ground clips of both probes must be connected together. It is strictly prohibited to connect the ground clips of the two probes to different potentials, especially to different potential ends of high-power equipment or 220V/110V circuits. Doing so may damage the oscilloscope's mainboard because both channels share a common ground, and connecting them to different potentials can cause a ground loop and short-circuit the mainboard.
  • The BNC input on the oscilloscope has a maximum tolerance of 400V. It is strictly forbidden to input voltages exceeding 400V when the 1X probe switch is used.
  • For charging, use the dedicated charger provided. It is prohibited to use the power supply of other equipment under test or a USB connection. Doing so may cause a ground loop and short-circuit the oscilloscope's mainboard, potentially damaging it during the testing process.
  • When measuring high-frequency, high-voltage signals, use a 100X probe (e.g., for ultrasonic welders, ultrasonic cleaners, etc.), or even a 1000X probe (e.g., for the high-voltage side of high-frequency transformers, induction heating coil resonators, etc.).
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Package List:

โ—‰ DPOS350P Host *1
โ—‰ QC18W Fast Charger *1 (US or EU Plug)
โ—‰ 350MHz Probe *2
โ—‰ Storage Bag *1
โ—‰ Alligator Clip *1
โ—‰ USB Data Cable *1
โ—‰ User Manual *1
โ—‰ 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 -5~40โ„ƒ, 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),ย 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.comย /ย info@fnirsi.com
We strive to reply to you withinย 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.

At Fnirsi, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from fnirsi.com. This policy aims to give you confidence and peace of mind when shopping with us.

What is the 30-Day Price Guarantee?

Our 30-day price guarantee means that if you purchase a product from fnirsi.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based onย USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)

How Does the Price Guarantee Apply?

  • Eligibility: The price guarantee applies only to purchases made on fnirsi.com. Products purchased from other retailers or third-party sellers are not eligible.
  • Timeframe: The price drop must occur within 30 days of your original purchase date.
  • Product Match: The price guarantee applies to the same product (identical model, specifications, and condition).

How to Apply for a Price Difference Refund

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:

  • Documentation: Prepare your order number and proof of the price drop (such as a screenshot andย link to the product page showing the reduced price).
  • Contact Us: Reach out to our customer support team at info@fnirsi.com .Include your order number, proof of the price drop, and a brief explanation of your request.
  • Verification: Our team will verify the price drop and your purchase details.
  • Refund Process: Once verified, we will process the refund for the price difference to your original method of payment. It typically takes 1-3 business days for you to receive the refund.

At Fnirsi, we strive to provide our customers with high-quality products and exceptional customer service. Our 30-day price guarantee is just one of the ways we ensure you get the best value for your investment. Shop confidently with Fnirsi, knowing that you are always getting the best deal available.
Thank you for choosing Fnirsi. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at info@fnirsi.com.

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Customer Reviews

Based on 44 reviews
77%
(34)
18%
(8)
2%
(1)
2%
(1)
0%
(0)
M
Milan K.

The DPOS350P oscilloscope is a very useful tool for home hobbyists, but it also has its shortcomings, which I hope will be addressed in a future firmware update.

What I particularly appreciated:

1. The system starts up quickly after power-on, which makes the device ready to use almost immediately.
2. The built-in spectrum analyzer, although quite limited, is still a pleasant surprise and useful for basic work.
3. The frequency response analyzer is also appreciated, even though the results can only be interpreted very roughly.
4. The ability to save FFT conversion lengths from 4K to 32K adds flexibility for different types of signal analysis.
5. The improved touchscreen is a nice upgrade, especially since I was already used to the FNIRSI 1013D.
6. The included carrying case is a very welcome accessory, making transport and storage much easier.

What disappointed me:

1. There is no indication of charging status, either when the device is turned off or on. When on, there's only a tiny icon resembling a phone battery with a blue center. When off, there's no way to tell if the battery is charging or fully charged. A device in this price range should offer basic battery status information โ€“ even the cheapest mobile phones do.
2. The firmware version is not shown anywhere in the system, and itโ€™s not mentioned in the manual. There's no known way to check or upgrade the firmware, if thatโ€™s even possible. Even my old FNIRSI 1013D supports firmware updates.
3. The analyzers work very coarsely, which limits their usefulness for more precise tasks โ€“ for example, displaying AM sidebands is not possible.
4. The internal fan is too loud, which is distracting in a quiet work environment.

Conclusion: Iโ€™m still getting to know the device as time allows. For home use, it is sufficient, although I regret the four shortcomings mentioned above. Perhaps some of them will be addressed in a future firmware update โ€“ if one is even planned. Still, for the price I paid, I got a good instrument. Iโ€™d say the price matches the deviceโ€™s overall usefulness.

F
Fernando C.
Play eletronics

I play with satosfation good for home brew and testings my works

A
Alan M.
DPOS350P review

Seems to be a great instrument. I would buy more items from them.
Fnirsi takes way too long to ship, almost 2 months. USPS dropped the ball multiple times as it took almost 30 days to get to me.

D
David M.

Works as expected

C
Chuck K.
My FNIRSI multi-function dual channel portable digital scopes are amazing!

Recently I found out about FNIRSI electronics gear. Full-featured scopes and multi meters in a small footprint. So I ordered the DVM model as well as a more bench style DSO/Generator/Analyzer model for misc diagnostic work I do. So far they exceed my expectations for a DSO in it's price class. Include all the typical manual settings, coupling, offsets, display options, X-Y vectorscope, signal generator with typical waveforms and noise for whatever you're wanting it to do. One package usually multiple devices on the bench. Comes with easy to calibrate X1/X10 probes to match the number of channels you have. In these cases, each meter has 2 scope probes, signal gen BNC jumper, DVM V/A/ohm probes and temp probe.Back when had such things for business use, cost was considerably more for each item in a much larger form factor. Very pleased with battery life, ease of operation, accuracy in # of data points in samples, storage, etc. I'm sure I haven't used all of the features yet even after reading a well put together manual (global languages supported) For the DVM/scope model FNIRSI-2C23T, it's 10MHZ BW for each scope channel is adequate for basic display, had I known about the 2C53T with 50MHZ, I would have popped for he small amount extra to get that one. Either one is great for audio, while the higher can assist in many HF radio projects, including Amatuer Radio gear.

The FNIRSI-DPOS350P is even more amazing with oscilloscope, signal generator, frequency response analyzer and spectrum analyzer in one package. With 2 scope X1/X10 probes with 350MHZ BW, you can measure even more radio-related gear as well.

While the internal batteries charge last for a lot of use, when new and when needed, both have quality USB-C charging cables included for faster charging from today's higher current output quick chargers..

FNIRSI devices are firmware upgradeable if/when company comes out with improvements or feature enhancements. Both came shipped with latest revisions installed which is always nice to not have to immediately upgrade something you just bought before you know it works.

You can tell quality control is high how they build-by-order so all items get the latest software, hardware. The little extra wait is well worth it when they arrive at your door.

Have used various brands and models of test gear in my careers and so far, very pleased with my finding FNIRSI and their products.

They have tools available as well, so check them out on their website.

https://www.fnirsi.com

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