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FNIRSI

FNIRSI DSO152 Handheld Oscilloscope 200kHz Bandwidth, 2.5MS/s Sampling Rate

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Availability: In Stock.
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Arrives Wednesday, Sep 30
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Features

  • Faster Sampling SpeedFNIRSI DSO152 handheld oscilloscope has a real-time sampling rate of 2.5 MS/s and a 200 KHz bandwidth. The 10 x probe can measure up to 800 VPP, which is equivalent to 280 V AC. Voltages up to 400 V can be measured
  • Professional Designed The DSO152 automotive oscilloscope supports full trigger modes(Auto/Normal/Single). Works perfectly for both periodic analog signals and aperiodic digital signals. 2.8'' HD LCD display screen, a resolution of 320*240, clear to observe
  • Portable OscilloscopePocket oscilloscope is an Assembled finished Machine, lightweight and easy to carry, it can be used directly to avoid assembling welding process problems. Applicable to the maintenance industry and R&D education industry
  • Easy MeasuringEquipped with efficient one-key AUTO setting of all parameters, the measured waveform can be displayed without cumbersome adjustment. Long press the AUTO button to quickly calibrate the baseline,fast measurement of waveforms
  • Longer Battery LifeFNIRSI DSO152 digital oscilloscope has a built-in 1000 mAh high-quality lithium battery, which can be used continuously for about 4 hours after being fully charged. Type-C interface supports data transmission and charging, firmware upgrade

Description

FNIRSI DSO152 oscilloscope features a real-time sampling rate of 2.5 MSa/s, a bandwidth of 200 kHz, and a time base range of 10 μs to 50 s. FNIRSI DSO152 automotive oscilloscope is equipped with a 2.8-inch high-definition LCD display with a resolution of 320×240; it has a built-in 1000mAh lithium battery and supports Type-C interface charging; it also features an automatic function. DSO152 Oscilloscope Wave Measurement Display Sampling rate：2.5MSa/s Bandwidth：200kHz Vertical sensitivity：10mV/div-20V/div Time base range：10μs/div-50s/div Input Impedance：1MΩ Trigger method：Auto / Normal / Single Auto Measurements：Max, Min, Avg, RMS, Vpp, Freq, Duty, Cycle FNIRSI DSO152 oscilloscopes shine in diverse scenarios: Lightweight yet powerful, it’s the go-to for pros and DIYers—your all-in-one solution for maintenance, learning, and repair tasks. Frequently Asked Questions 1. Q: When measuring slow signals, I experience waveform instability and trigger failure. How can I improve this? A: The methods are as follows: 1. Adjust the trigger level: Set the level to the middle of the signal amplitude (approximately 50%) to avoid noise interference. 2. Switch the trigger edge: Press and hold the MODE key to select "Falling Edge." This can sometimes make it easier to trigger on high-slope signals. 3 Use Single Mode: Short-press the MODE key to switch to Single mode, which is suitable for capturing non-periodic signals. 4. Reduce the sampling rate: Slowing the timebase (e.g., 500μs/div) can extend the observation time and display the complete waveform. 2. Q: My oscilloscope isn't accurately displaying a sine wave, or the waveform is abnormal. How can I improve this? A: Here are the steps: 1. Confirm that the input frequency is within the range (≤40 kHz is recommended). 2. Set the probe magnification and synchronize the device settings (probe to 1X, device to 1X). 3. Adjust the coupling mode to DC or AC to match the signal type. 4. If the abnormality persists: Check the probe and signal source. 3. Q: What should I do if the oscilloscope won't turn on or off, won't read, or freezes? A: Troubleshooting steps are as follows: 1. Check the battery level and, if necessary, recharge and restart. 2. Use a toothpick or other similar tool to gently press the reset button and try restarting. If this doesn't work, try reflashing the firmware. 3. Check the connector for damage, looseness, or foreign objects, and confirm that the signal frequency is within the specified range (≤200kHz). Tips: Avoid measuring high voltage at 1X, use the correct plug, and avoid rough handling to reduce malfunctions. 4. Q: What should I do if the device does not work as expected (e.g., the amplifier cannot be adjusted, or the display lines keep jumping)? A: Try the following steps to troubleshoot: 1.Check the probe connection: Make sure the probe (e.g., BNC connector) is firmly plugged in and locked, and the ground clip is securely attached to the exposed metal ground of the test device. 2.Confirm signal frequency and settings: If the signal frequency is below 40 Hz, switch the trigger mode to Normal to improve stability for low-frequency signals. 3.Recalibrate and reconnect: Disconnect any unnecessary external cables to avoid interference, press and hold the AUTO button for automatic calibration, then reconnect the signal. Transforming technology into a tool to serve customers FNIRSI Technology Co., Ltd. is a high-tech enterprise integrating instrumentation independent development, design, production and sales, providing high-quality and cost-effective instrumentation and peripheral tools and equipment for users worldwide. FNIRSI's equipment has covered the sales market in many countries and regions around the world such as USA, Japan, EU, Canada, etc. 10MHz Bandwidth, 48MS/s Sampling Rate, 2 in 1 Oscilloscope/DDS Signal Generator 9999 Count Digital Multimeter with Recording Mode 4.3 inch Touch Screen Tablet Oscilloscope Multimeter DDS Signal Generator 3 IN 1 Digital Oscilloscope Multimeter DDS Generator Detect and stay away from radiation sources in life Voltage Internal Resistance Battery Meter Take you to see the secrets of electricity in the cable

Product Dimensions: ‎3.78 x 2.64 x 0.79 inches


Item Weight: ‎10.2 ounces


Manufacturer: ‎FNIRSI


Item model number: ‎DSO152


Batteries: ‎1 Lithium Polymer batteries required. (included)


Date First Available: ‎June 19, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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Top Amazon Reviews

    • Works great
Color: Blue
I’m really impressed with this handheld oscilloscope, especially considering the price. I bought it mainly for troubleshooting and checking electrical signals, and it has been a very useful tool to have around. The compact handheld design makes it much easier to use than a traditional bench oscilloscope when you’re working on a vehicle, electronics, wiring, or other equipment where you don’t necessarily have a convenient workbench nearby. The screen is clear and easy to read, and the controls are straightforward once you spend a little time getting familiar with them. I like that everything is built into one small unit rather than having to set up a large oscilloscope, power supply, probes, and a bunch of other equipment just to check a signal. The portability is probably one of my favorite things about it. For basic troubleshooting, signal checking, looking at waveforms, checking frequency, and seeing whether a circuit is actually producing the signal you expect, this thing works very well. It’s also nice for anyone learning about electronics because you can actually see what the electrical signal is doing instead of relying solely on a multimeter reading. The build quality feels better than I expected for something in this price range. It doesn’t feel like a toy, and the handheld format makes it convenient to keep nearby in a toolbox. The included accessories are also useful and mean you can start using it pretty much immediately after getting it. Obviously, this isn’t meant to replace an expensive professional bench oscilloscope for advanced laboratory work, but that’s not really what I bought it for. For automotive electrical diagnostics, DIY electronics, hobby projects, repairs, and general troubleshooting, it does exactly what I need. Being able to quickly grab it and check a waveform is much more convenient than breaking out a full-size scope. Battery operation is another big advantage. Not having to worry about finding an outlet or running an extension cord makes it especially convenient when working around a vehicle or other equipment. The compact size also means it doesn't take up much room in a toolbox. Overall, I think this is an excellent value for someone who wants to get into using an oscilloscope without spending a huge amount of money. It’s portable, simple enough to learn, and capable enough for a lot of everyday troubleshooting. If you understand its limitations and aren't expecting the features of a high-end professional scope, I think it's hard to complain about what you get for the price. Definitely worth having around if you work on electronics, automotive electrical systems, or just like tinkering with circuits. I would absolutely recommend it to other DIYers and hobbyists. ... show more
Reviewed in the United States on August 8, 2026 by Dominic R.
    • Great for gain amplifier tuning!
Color: Blue
Great little oscilloscope for setting amp gains and checking for clipping. I used it to tune my subwoofer amp and it worked perfectly for the job. Being able to actually see when the signal starts to clip instead of guessing with a multimeter or by ear is a huge plus. The screen is clear enough to easily see the waveform and the controls are simple to figure out. For the price this thing is honestly a no-brainer if you’re into car audio. It makes setting gains way safer so you’re not accidentally sending a clipped signal to your subs and cooking your voice coils. It’s small, portable, and accurate enough for basic audio tuning. If you’re running aftermarket amps and want to set gains the right way, this is a great tool to have in your toolbox. ... show more
Reviewed in the United States on March 16, 2026 by Caden
    • good not great
Color: Blue
great little single channel oscilloscope surprisingly accurate and affordable only real gripe would be the output readings of cycle tune and duty cycle only go to the hundredths place and whole integer rounding depending on bandwidth compared to frequency
Reviewed in the United States on August 6, 2026 by chase crecker
    • A Must‑Have Tool for Tuning Car Stereos — Perfect for Finding Clipping Fast. Fast Shipping.
Color: Blue
Using the **FNIRSI DSO152 handheld oscilloscope** for car audio tuning has honestly made my workflow smoother and way more accurate. For something this compact, it delivers exactly what you need when you’re setting amplifier gains, checking head unit output, or verifying when a signal starts to clip. The DSO152 isn’t a big bench scope, but for in‑car work, that’s actually the advantage. Fast, clear clipping detection. The 2.8" screen shows the waveform cleanly enough to see flattening at the peaks. Lightweight and handheld, easy to hold while adjusting gain knobs in tight spaces. 200 kHz bandwidth — more than enough for audio‑frequency testing and amplifier output checks. Simple controls, no deep menus or confusing settings, you get to the signal fast. Rechargeable and portable, no cords running across the car while you’re tuning. It’s the kind of tool you can toss in your tuning bag and trust every time. Watch the waveform rise as you turn the gain up, Spot the exact moment the top of the wave starts to square off Back the gain down to a clean, safe level. Confirm the head unit isn’t clipping before the amp. Check RCA output voltage quickly For car audio installers, hobbyists, or anyone who tunes their own system, the **FNIRSI DSO152** is a surprisingly capable little oscilloscope. It’s portable, easy to read, and perfect for spotting clipping and setting gains correctly. It paid for itself the first week I used it. ... show more
Reviewed in the United States on March 19, 2026 by Orlando C.
    • Must buy if you want to tune amps
Color: Blue
Amazing product does what it’s intended to do I used this to tune audio amplifier and it does the job amazing product
Reviewed in the United States on July 8, 2026 by Josbeth Betancourth
    • Piece of art
Color: Blue
Made my audio set-up in my car way crispy less distorted and punching softly. I love this little audiophile toy.
Reviewed in the United States on August 10, 2026 by Lekishon
    • Easy to tune amplifiers with
Color: Blue
Used this to tune my kicker cxa800.1 and key200.4 amplifiers and got perfect signal with no clipping. Just buy this if you want to protect your sound system investment! It's worth every dime!
Reviewed in the United States on July 18, 2026 by The Mad Villain
    • Works fine but not durable and debatable savings
Color: Blue
Review Image by Amazon Customer
Review Image by Amazon Customer
Review Image by Amazon Customer
Capable for what it claims to be, but so fragile and small that it's best suited to perhaps an introductory class on what a scope is and what it measures. Good for a parent teaching a child, but not suitable for actual tool box uses. The probe interface is MCX, a tiny connector that isn't intended for the stresses applied by the large BNC adapter and probe set provided. The selector left-ok-right rocker control is very fragile feeling and somewhat difficult to use. There is a wealth of signal information displayed, however 'Vavg' is of the displayed waveform, meaning that with only the "coarse" timebase adjustment (i.e. no 'knob' to smoothly vary that) the displayed value isn't very meaningful. While it's unlikely to last in workday use, the displayed waveforms appear correct, matching those of the more capable (and more expensive) 2C53T (which I upgraded to after a comparison). If you purchase this, be sure to factor in about 15 dollars for a case, and note the 2C53T includes a very good hard case. Ultimately you save about 40 dollars with this unit, but you get what you pay for... Also note that with a case big enough for the scope probe (without taking it apart) - you'll have a package almost as large as the 2C53T... ... show more
Reviewed in the United States on March 1, 2026 by Amazon Customer

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