FNIRSI DPOS350P 4 in 1 Tablet Oscilloscope Multimeter
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Description
Tablet Oscilloscope 2 Channel Signal Generator Spectrum Analyzer Frequency Response Analyzer
The FNIRSI DPOS350P is a sophisticated 4-in-1 instrument designed for professionals in various fields, including laboratories, production lines, and maintenance sites. This versatile device integrates a 350MHz dual-channel digital phosphor oscilloscope, a 50MHz full-function signal generator, a 200K~350MHz spectrum analyzer, and a 50MHz frequency response analyzer, making it an essential tool for comprehensive signal testing and analysis.
#### High-Performance Features
At the core of the DPOS350P is its impressive performance specifications. It boasts a real-time sampling rate of 1GSa/s and an analog bandwidth of 350MHz in single-channel mode. This high-performance capability allows for the accurate capture and display of a wide range of signals, particularly beneficial for complex signal analysis and low-probability anomaly detection. The ultra-high waveform refresh rate of 50,000 waveforms per second ensures that even the most fleeting signal changes are captured with clarity.
#### User-Friendly Interface
The DPOS350P features a 7-inch high-resolution IPS touchscreen with a resolution of 1024×600 pixels, providing a clear and detailed waveform display. The touch operation enhances user interaction, allowing for intuitive navigation through its various functions. The device supports both grayscale and colour temperature mode switching, making it adaptable to different testing environments. Additionally, intelligent triggering and multiple measurement modes contribute to its precision and reliability.
#### Comprehensive Signal Generation and Analysis
Equipped with a built-in 50MHz signal generator, the DPOS350P supports 14 standard waveforms along with custom waveform functionality. This versatility is complemented by its spectrum analyzer, which covers a frequency range of 200K~350MHz, making it ideal for electromagnetic interference (EMI), radio frequency (RF), and high-frequency signal testing. The frequency response analyzer further enhances its capabilities, allowing for detailed analysis of system responses across a wide frequency range.
#### Safety and Convenience
Safety is paramount in the design of the DPOS350P, featuring high-voltage protection up to 400V. This ensures that users can operate the device with confidence in various testing scenarios. The device also incorporates QC18W fast charging technology, enabling it to be fully charged in just two hours, thus ensuring long-term stable operation.
For data management, the DPOS350P supports the storage of up to 500 waveform data sets and 90 images, with USB data export functionality for easy analysis and report generation. This feature is particularly useful for professionals who require efficient data handling and documentation.
#### Conclusion
The FNIRSI DPOS350P is a high-performance, feature-rich all-in-one oscilloscope that meets the diverse needs of industrial and research applications. Its powerful integrated design, high sampling rate, and wide bandwidth make it an ideal choice for accurately analysing complex signals. Whether for laboratory research or quality control on the production line, the DPOS350P delivers reliable measurement performance, making it an indispensable tool for professionals in the field.
Additional information
| Weight | 1.500 kg |
|---|---|
| Dimensions | 20 × 10 × 10 cm |
| Brand Name | FNIRSI |
| FNIRSI Model | DPOS350P |
| Battery Included | Yes |
| Origin | Mainland China |
| High-concerned chemical | None |
| DIY Supplies | Electrical |
| Digital Channels | 2 |
| Model Number | DPOS350P |
| Record Length | 60Kpts |
| IS Battery Demountable | Yes |
| Display Resolution | 1024*600 Pixels |
| Certification | CE, weee |
| Real Time Sampling Rate | 1GSa/S |
| Display Size | 7 Inches & Above |
| Max Waveform Capture Rate | 50, 000wfm/s |
| Band Width | 350Mhz |
| Hardware bandwidth limit | 150M / 20M |
| Rise time | 1ns |
| High resolution mode | 8bit ~ 16bit |
| Overvoltage protection | ±400V |
| Parameter measurements | 12 types |
| 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 |
| Cursor measurement | time, period, frequency, level, voltage |
| Trigger detection | digital trigger |
| Trigger mode | Auto / Single / Normal |
| Trigger edge | rising edge / falling edge |
| Trigger suppression | L1 ~ L3 |
| Trigger level | manual / auto 10% ~ 90% |
| FFT display | support |
| Digital fluorescence | YES |
| Color temperature display | support |
| X-Y mode | support |
| ZOOM time base | support |
| One-key automatic adjustment | support |
| Screenshot storage | 90 pictures |
| Waveform storage | 500 groups |
| Data browser | support |
| Waveform types | 14 types+captured waveform |
| Frequency | 0 ~ 50MHz(sine wave only, other waveforms up to 10M/5M/3M) |
| Amplitude | 0 ~ 5VPP |
| Offset | -2.5V ~ +2.5V |
| Excitation signal frequency | 100Hz ~ 50MHz |
| Conversion method | FFT |
| FFT length | 4K ~ 32K |
| Frequency range | 200KHz ~ 350MHz |
| Level range | -60dBmV ~ +260dBmV |
| 3D waterfall chart | support |
| Charging | QC18W – 12V/1.5A |
| Battery | 3.7V, 8000mAh lithium battery |
| Languages | Chinese / English / Russian / Portuguese |
| Automatic shutdown | 15 minutes ~ 1 hour / off |











Denis L. (verified owner) –
Good working.
John (verified owner) –
Please add a logic probe and signature analysis. Everything else seems perfect. Many thanks.
Kevin (verified owner) –
Great piece of equipment. Smooth delivery.
John T. (verified owner) –
I really like the user interface and the superior bandwidth and sample rate of this scope. The touch controls are pretty intuitive and it’s generally an easy scope to use. The most noticeable issue is the error in the voltage scaling.
Steve (verified owner) –
As described good value.
Anonymous4 (verified owner) –
A good and high-quality device. It has a good bright screen. It lacks a trigger on scans with a period of 50ms or more.
Robert D. (verified owner) –
The oscilloscope is a very handy and well featured portable battery powered device. The UI is perhaps a tad daunting at first but once familiar with the touch screen operation becomes almost second nature. The signal generator appears to be very functional. Seriously for the money it is not a bad deal at all.
a.w. (verified owner) –
Turned on looks great well packaged! Now to charge and test!
Simon (verified owner) –
Some functionality is pleasant. I already have a Tektronix DPO-2012. This DPOS350P is here to complete some functionality that I don’t have in the lab. At this time it’s very good.
Alan G. (verified owner) –
With the new DPOS350P Fnirsi have taken a leap forward in performance and quality. The build quality is excellent. The touch screen is very bright and responsive. I like the Bode plot feature. It won’t replace my Rigol 900 series scope but the very fast boot time will make it the go-to scope for quick measurements.
Carlin (verified owner) –
Really great packaging I am thoroughly satisfied with the response from the company. Very good response. Thank you for a great product! My item was delivered safe and secure. I look forward to future products!
Anonymous3 (verified owner) –
The DPOS350P is a very capable device in a small package. Usage is very easy through the touch interface. Not as impressive is the relatively loud fan noise. Also it is missing an alternate trigger function. All in all I’m very impressed with the device and I hope FNIRSI continues to improve the firmware.
Colten S. (verified owner) –
I love it works great for automotive waveforms. Best portable scope for the price hands down super nice build quality and great battery life. This scope is just so sweet. If you buy one you will fall in love with it.
Bekar O. (verified owner) –
Worth the money it costs.
R.H. (verified owner) –
Useful device which is very portable.
Mark H. (verified owner) –
I am very impressed so far with the functions and quality of this oscilloscope. It seems to do everything advertised and is extremely powerful for one being battery operated. This is an extremely handy tool and is very accurate for a device this size.
David N. (verified owner) –
Worth every penny!!!
Dimcho L. (verified owner) –
The oscilloscope is what I needed – a tool to pinpoint problems on electronic PCBs. Tested with a faulty PCB for pulse duty cycle adjustment – worked fine.
Jan W. (verified owner) –
The build quality of this scope is extraordinary the picture quality of the screen is perfect and every detail can be recognised at a glance. Touch function works flawlessly and every function can be controlled by touchscreen. The function set is unbelievable for a device of this price and quality. I love it. Well done FNIRSI!
Ivo C. (verified owner) –
I own several products from FNIRSI and I am satisfied with all of them. They show the stated parameters and I have not had a problem with any of them so far.
Michał R. (verified owner) –
Made a good choice. Good quality/price ratio.
Jaume D. (verified owner) –
I work in electronics and use oscilloscopes for at least 50 years. There are two important remarks about this device that need attention.
Manolo L.M. (verified owner) –
It needs PC remote control and has poor options but is good equipment at a fantastic price.
Gerard K.T.N. (verified owner) –
I purchased recently a DPOS350P 4-IN-1. I received it nicely packed in a box including a transport case and measurement probes. Really a magic box with great functionalities and an extreme good price.
David B. (verified owner) –
I haven’t put it to heavy use yet. The build quality appears to be good. It’s been up to the task when I have used it.
FM (verified owner) –
Not recommended for Audio FFT. I need an Audio FFT Spectrum from Hz to 25kHz ideally with waterfall display which this device does not provide.
Wolfgang M. (verified owner) –
The FNIRSI DPOS350P presents a multifaceted testing solution through the integration of several instrument functionalities within a single compact device. The unit is supplied in protective packaging comprising a robust carrying case dual probes and a dedicated power supply unit thereby facilitating immediate use.
flippergast.nl (verified owner) –
Very nice oscilloscope. Portable long battery life and easy to use. I use it to troubleshoot pinball and arcade machines. For me the portability and usability is important so the auto range function is used a lot. One improvement needed: after switching off and on again the range is reset. Also the fan should be more quiet.
Joachim U. (verified owner) –
With the Fnirsi DPOS350P I’ve fulfilled a long-held wish. I’m impressed by the device’s range of functions and well-thought-out usability. Apart from turning on the oscilloscope everything is controlled via touchscreen which works surprisingly well.
Chuck K. (verified owner) –
Recently I found out about FNIRSI electronics gear. Full-featured scopes and multimeters in a small footprint. So I ordered the DVM model as well as a bench style DSO/Generator/Analyzer model for misc diagnostic work. So far they exceed my expectations for a DSO in its price class.
Fernando C. (verified owner) –
I play with satisfaction good for home brew and testing my works.
Alan M. (verified owner) –
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.
David M. (verified owner) –
Works as expected.
BobL (verified owner) –
The 4 in 1 scope works great with good battery life. Painlessly used it to debug some logic circuit issues and prototyped some circuits using the scope and internal signal generator. Only wish it would work at 500MHz speeds and had a faster signal generator.
Giampiero (verified owner) –
Perfect shipment and excellent product. A+++
Erich W. (verified owner) –
If you’re looking to get into electronics and want quality gear without a huge investment I can recommend FNIRSI. I am a career electrical engineer but still a hobbyist and these are a great way to keep my home lab up to date.
Reynaldo I. (verified owner) –
I almost have all FNIRSI items. It offers precision measurement equipment at an affordable price compared to other brands. Recommended 200%.
Anonymous2 (verified owner) –
This product is amazing because to get something like this a few years ago would have cost well over one thousand dollars.
AFSHIN R. (verified owner) –
It’s a very good product. I’m very pleased with it. I’m waiting for the 500MHz model of this scope.
Lucas L. (verified owner) –
Great design very versatile and handy because of the integrated battery. Big display with good resolution.
Kiran J. (verified owner) –
Over a month later the parcel has disappeared in the post without a trace. Lost my money.
Andrea S. (verified owner) –
The instrument is very well built and has a solid look. It powers on extremely quickly and responds very promptly to any command. Unfortunately the oscilloscope is practically unusable with a time base longer than 20ms. I sincerely hope for a firmware upgrade that fixes this flaw in an otherwise very good product.
Miguel S. (verified owner) –
All other functions work as expected. I love its compact size. Very good screen resolution.
Carlo B. (verified owner) –
Good product on the hardware level but the firmware needs a lot of improvement. The frequency response graph also has some issues with the graphs misrepresenting reality in many places.
Robert T. (verified owner) –
I have not given 5 stars as I have not got to test all functions but what I did test worked as expected.
Richard A. (verified owner) –
I have used my scope a bunch of times so far and I have been super happy with it. It’s easier to use than I thought. There is so much more to it that I have not utilized yet. The signal generator will be a great diagnostic tool when I get a chance to use it.
John D. (verified owner) –
I love this thing! Does everything I ask and is portable too!
Tihomir D. (verified owner) –
Great products and great service!
Chris K. (verified owner) –
Fast delivery and great products.
Alessandro M. (verified owner) –
Yes an excellent price-performance ratio but the Bode plot is sometimes not very precise and the intrinsic noise of the Spectrum Analyzer could be better but it remains an excellent and very versatile measuring instrument.
e r. (verified owner) –
An amazing gadget both in terms of functionality and value for money. When I was a kid these kinds of gadgets cost tens of thousands of dollars. Nowadays thanks to FNIRSI you get them for the cost of a smartphone!
Bjarne S. (verified owner) –
Super flexible and useful for audio system checks.
Jay (verified owner) –
Great product at a great price.
David M. (verified owner) –
Operating is intuitive. It’s easy to get a good display of a signal. The auto-setup is quick and produces a nice display. The built-in signal generator is very nice. Its square wave rise time is on the order of 15nS and it has a nice assortment of other waveforms.
Trifon T. (verified owner) –
Works very well. I tried oscilloscope and signal generator and they work perfect. Good well built scope.
Ben V.R. (verified owner) –
Happy with the product. Only miss recording time of wave or didn’t find it yet.
Eamonn F. (verified owner) –
This is very handy to bring in toolbox and is easy and quick to set up. I am a mechanic and find this scope well able to test sensors on vehicles. Great tool. Would recommend very much.
Pieter (verified owner) –
Nice product good finish great to use and very useful as portable device for onsite testing and diagnostics.
Tony H. (verified owner) –
This thing is a beast of a work horse it’ll handle everything you throw at it. Awesome battery life great touchscreen great software.
Bojan R. (verified owner) –
A very convenient instrument for field work. It does have a battery with somewhat too little capacity for longer use but on the other hand the instrument is small and portable. The display is large enough and the 16-bit resolution is impressive.
Rob B. (verified owner) –
I’ve been buying FNIRSI products for a few years now and this scope is by far the best tool in my toolbox. It’s not just a great touchscreen oscilloscope it also handles FFT analog and audio signal analysis and includes one of the best signal generators I’ve used.
Jani E. (verified owner) –
Great tools and good value.
Patrizio O. (verified owner) –
Works as expected. Super value for money.
Neil R. (verified owner) –
Arrived in a few days has quality weight and feel quick boot up time and done some basic voltage tests and works well. Brought for automotive use and still yet to fully test. Brought additional BNC to banana adapters for using multimeter leads for back probing.
Carlos C.G. (verified owner) –
Ok.
Pieter B. (verified owner) –
Good measuring equipment and very affordable. It’s a bit of a shame that they don’t all come with a bag to store these beautiful devices in. I ordered three different ones and the scope came in a practical bag the others didn’t.
Scott T. (verified owner) –
User guide for probe frequency compensation – how do you adjust the trimmer? Where and how is the trimmer adjustment made?
Ernest G.D. (verified owner) –
You have abandoned all my emails to return the product.
Albert v.B. (verified owner) –
The FNIRSI 4in1 DSO was perfectly delivered with a matching bag and all add-ons and probes. It already measured fine when HF transmitters were tested in the Spectrum Analyzer. It is quite heavy because of the internal 8Ah fast chargeable battery but still very portable for field work.
Kiryl (verified owner) –
Do not recommend.
Adrian M. (verified owner) –
Device ok. Noisier fan.
Benjamin J. (verified owner) –
Great scope! Recommendations for future updates: Add a 20kHz bandwidth limit to remove high-frequency noise from audio signals.
Anonymous (verified owner) –
It’s a very nice tool it’s almost professional with dirt cheap price. The portability makes it a very powerful useful tool.
Klemen M. (verified owner) –
I did some tests and it looks like my FNIRSI is damaged.
Dan (verified owner) –
Nice scope but the software is very basic and a lot of common functions are just not there. There is no way to know the firmware version.
Mike M. (verified owner) –
Product is now 6 weeks late and support is silent. No answers.
George G. (verified owner) –
Very Nice Product. Love FNIRSI.
Sergiy V. (verified owner) –
I am a fan of FNIRSI.