12 Best Digital Oscilloscopes (June 2026) Complete Guide

Whether you are debugging a microcontroller project, troubleshooting a power supply, or learning electronics for the first time, a digital oscilloscope is one of the most important tools you can own. Unlike a multimeter that only shows static voltage readings, a digital storage oscilloscope (DSO) captures and displays electrical signals as live waveforms so you can see exactly what is happening in your circuit in real time.

Our team spent several weeks comparing 12 of the most popular digital oscilloscopes available right now, ranging from pocket-sized handheld units to full benchtop models with four channels and 12-bit resolution. We looked at bandwidth, sample rate, memory depth, build quality, ease of use, and real-world performance to find the models that actually deliver on their specifications. This guide covers the best digital oscilloscopes for hobbyists, students, automotive technicians, and professional engineers alike.

In this article, you will find detailed reviews of all 12 oscilloscopes, a side-by-side comparison table, a buying guide explaining the specs that matter, and answers to the most common questions people ask before buying. Whether you need a basic pocket scope for quick checks or a mixed-signal powerhouse for embedded development, we have a recommendation that fits.

Top 3 Picks for Best Digital Oscilloscopes

Best Digital Oscilloscopes in 2026 – Quick Overview

1. FNIRSI DSO152 – Ultra-Portable Pocket Oscilloscope

I picked up the FNIRSI DSO152 to keep in my toolbox for quick signal checks, and it genuinely fits in my shirt pocket. At just 10.2 ounces, this is one of the lightest oscilloscopes you can buy. The 2.8-inch LCD screen is surprisingly readable, and the one-key AUTO function gets you a usable waveform display in seconds without fiddling with timebase and voltage settings.

The 200 KHz bandwidth and 2.5 MS/s sampling rate limit you to audio-frequency and slow signal work. I used it successfully for checking PWM signals from an Arduino, verifying audio amplifier output stages, and testing sensor signals. For anything above audio frequencies, though, you will outgrow this scope quickly. The single channel also means no comparing two signals side by side.

Battery life is solid at around 4 hours of continuous use from the built-in 1000 mAh lithium battery. Charging and data transfer both work through the Type-C port, which is a nice modern touch. I also like that the 10x probe can measure up to 800 VPP, giving you headroom for automotive and power supply work.

The biggest trade-off is build quality. The rocker control feels fragile, and the MCX connector for the probe is not as robust as a standard BNC. This is not a scope you toss into a busy work bag without some protection. But for occasional quick checks, automotive audio tuning, or as a first oscilloscope for a student on a tight budget, the DSO152 delivers genuine value.

Who Should Buy the FNIRSI DSO152

This scope is ideal for car audio installers who need a quick clipping detector, students exploring electronics for the first time, or anyone who needs a pocket-sized waveform viewer for basic troubleshooting. If you are working with audio-frequency signals and need something you can carry anywhere, the DSO152 is a practical choice that costs less than a decent multimeter.

Who Should Look Elsewhere

If you need to compare two signals simultaneously, work with frequencies above 200 KHz, or need precise timebase control for detailed measurements, the DSO152 will frustrate you. Engineers working on embedded systems or digital signals should step up to at least a 10 MHz scope with dual channels like the FNIRSI 2C23T or FNIRSI 1014D.

2. FNIRSI DSO-510 – Handheld Scope with Built-In Signal Generator

The FNIRSI DSO-510 steps up from the DSO152 with 10 MHz bandwidth and a 48 MS/s sampling rate, which means you can actually view microcontroller clock signals, PWM outputs, and basic digital waveforms. The real selling point, though, is the built-in DDS signal generator that produces 13 different waveform types. Having both tools in one pocket-sized device is genuinely useful.

I used the signal generator to inject test signals into amplifier circuits while monitoring the output with the oscilloscope function. The 50 KHz maximum output frequency from the generator covers audio and low-frequency work well. The 2.8-inch screen is the same size as the DSO152 but feels adequate for the types of signals you will be looking at with this bandwidth.

Where the DSO-510 shows its budget roots is in the physical build. The housing feels light and plasticky, and the connectors can be tight and difficult to attach. The trigger mechanism takes some practice to get right, and the software interface is not immediately intuitive. Plan to spend an hour or two with the manual before you are comfortable navigating the menus.

For electronics troubleshooting on the go, though, this 2-in-1 combo is hard to beat at this price point. I found myself reaching for it more than expected because having both a scope and a signal generator in one pocket means fewer tools to carry. The 1000 mAh battery gives you a few hours of working time, and Type-C charging is convenient.

Who Should Buy the FNIRSI DSO-510

Hobbyists who need both a basic oscilloscope and a signal generator for circuit testing will get the most value here. It is also a solid choice for field technicians who want portable test equipment without carrying a full bench setup. If you work on audio electronics, basic digital circuits, or automotive sensors, the DSO-510 covers a lot of ground in one device.

Who Should Look Elsewhere

Anyone who needs dual-channel measurement, precise trigger controls, or professional build quality should pass on this one. The single probe limitation and toy-like feel make it unsuitable for serious engineering work or production testing. If you want a more capable handheld, look at the FNIRSI 2C23T with its dual channels and multimeter function.

3. FNIRSI 2C23T – 3-in-1 Oscilloscope, Multimeter, and Signal Generator

The FNIRSI 2C23T is one of the most versatile handheld test instruments I have used. It combines a dual-channel 10 MHz oscilloscope, a 10,000-count digital multimeter, and a DDS signal generator in one device. For someone who does not want to carry three separate tools, this is a compelling package.

I tested the oscilloscope function with Arduino PWM signals and I2C communication between two boards. Having two channels meant I could compare input and output waveforms simultaneously, which is a huge step up from single-channel pocket scopes. The 50 MSa/s sampling rate captured the signals cleanly, and the FPGA+MCU+ADC architecture handles the processing without noticeable lag.

The multimeter function covers AC and DC voltage up to 999.9V, current up to 9.999A, resistance to 99.99 MOhms, and capacitance to 99.99 mF. I compared its readings against a dedicated Fluke meter and found them within acceptable tolerance for hobbyist and light professional work. The DDS signal generator produces 7 waveform types up to 2 MHz, which is more than enough for most test scenarios.

The main frustrations are physical. The BNC connectors are recessed into the housing, making it difficult to get probes locked securely. The ground leads on the included probes are short, which limits where you can clip them. And the menu system takes time to learn because one button serves multiple functions depending on context.

Who Should Buy the FNIRSI 2C23T

This is the best pick for electronics hobbyists, students, and field technicians who need oscilloscope, multimeter, and signal generator functions in a single portable device. If you are building a mobile electronics toolkit or want to minimize the number of instruments on your bench, the 2C23T consolidates three essential tools with acceptable performance for everyday use.

Who Should Look Elsewhere

If you primarily need just an oscilloscope and want better probe ergonomics, a larger screen, and deeper memory, a dedicated bench scope like the FNIRSI 1014D or Hantek DSO2C10 will serve you better. The 2C23T trades specialized performance for versatility, so users who need precision in any one function may find the compromises frustrating.

4. Hantek 1008C – 8-Channel PC-Based Automotive Oscilloscope

The Hantek 1008C is a different animal from the other scopes in this roundup. It is a PC-based USB oscilloscope with 8 channels, designed primarily for automotive diagnostics. There is no built-in screen. Instead, you connect it to a Windows laptop via USB 2.0 and use the included software for all measurement and display functions.

I connected the 1008C to a vehicle engine management system and was able to monitor ignition coils, crankshaft position sensors, oxygen sensors, and fuel injector signals simultaneously across multiple channels. The 12-bit resolution provides finer vertical detail than typical 8-bit scopes, which matters when you are looking for subtle signal anomalies in sensor outputs. The 80+ automotive diagnostic functions cover ignition analysis, sensor testing, bus detection, and starting/charging system tests.

The software is the weak link. It works, but the interface is dated and not intuitive. I spent a couple of hours clicking through menus before I felt comfortable navigating the diagnostic functions. The 4K memory depth per channel is also restrictive when capturing long events like crankshaft position patterns across multiple engine revolutions. You have to be strategic about your timebase settings to avoid missing data.

For the price, though, getting 8 channels with 12-bit resolution and a built-in 8-channel programmable signal generator is remarkable. No other oscilloscope at this price point offers this many channels. If you are doing automotive diagnostics and already have a Windows laptop, the Hantek 1008C provides exceptional capability per dollar.

Who Should Buy the Hantek 1008C

Automotive technicians, car enthusiasts who do their own diagnostics, and anyone who needs to monitor multiple sensors simultaneously will find this scope invaluable. The 8-channel design lets you see relationships between sensors that 2-channel or 4-channel scopes simply cannot show. It is also useful for data acquisition applications where you need many low-speed inputs.

Who Should Look Elsewhere

If you need a standalone oscilloscope with a built-in screen, this is not it. The PC-based design means you always need a Windows laptop nearby. Mac and Linux users are out of luck. Also, the 2.4 MSa/s sampling rate and 4K memory depth limit you to relatively slow signals, so this is not suitable for high-frequency digital debugging or RF work.

5. FNIRSI 1014D – 100 MHz Benchtop Oscilloscope with Signal Generator

The FNIRSI 1014D is one of the best value benchtop oscilloscopes you can buy when you consider what you get for the money. It delivers 100 MHz bandwidth across 2 channels with a 1 GSa/s sampling rate, a built-in DDS signal generator, a 7-inch 800×480 LCD screen, and 1GB of internal storage. That is a serious feature set for a scope at this price point.

I used the 1014D for several weeks on my bench, testing everything from 3.3V logic signals to 24V power supply ripple. For signals under 30 MHz, it performed well with stable triggering and clear waveform display. The FFT function is useful for identifying frequency components in mixed signals, and the Lissajous display mode worked correctly when comparing two related signals. The built-in signal generator produces 14 waveform types, though the fixed 2V peak-to-peak output limits its usefulness for driving certain circuits.

The biggest concern with the 1014D is quality control. Multiple users, including people I know personally, have received units with issues ranging from calibration errors to complete DOA units. My unit worked correctly out of the box, but the 12% one-star review rate on Amazon tells you that quality control is inconsistent. Above 30 MHz, waveform accuracy degrades noticeably, so while the specs say 100 MHz, the practical usable bandwidth is lower.

The 7-inch screen is a comfortable size for bench work, significantly better than the 2.8-inch displays on the handheld FNIRSI models. USB power capability provides ground isolation when you need it, and the included 100X high voltage probe lets you safely measure higher voltage circuits. The 1GB of built-in storage is generous for saving waveforms and screenshots.

Who Should Buy the FNIRSI 1014D

Budget-conscious hobbyists who want a real benchtop oscilloscope with decent bandwidth and a built-in signal generator will find the 1014D delivers solid value. It is a practical upgrade from handheld pocket scopes and provides enough capability for Arduino projects, basic digital electronics, audio circuit debugging, and power supply testing. Students and makers on a budget get the most from this scope.

Who Should Look Elsewhere

If you need reliable accuracy at higher frequencies, math functions between channels, or professional-grade quality control, the FNIRSI 1014D is not the right pick. Engineers who need precise measurements above 30 MHz or guaranteed unit-to-unit consistency should consider the Hantek DSO2D15 or the Siglent SDS1202X-E instead.

6. Hantek DSO2C10 – 100 MHz Entry-Level Benchtop Oscilloscope

The Hantek DSO2C10 is a straightforward 100 MHz benchtop oscilloscope that focuses on getting you clean waveforms without unnecessary features driving up the cost. With 2 channels, 1 GSa/s sampling, and 8M memory depth, it covers the basics that most hobbyists and students need for everyday electronics work.

The 8M memory depth is a real advantage over cheaper scopes. I was able to capture several milliseconds of signal at high sampling rates without the waveform scrolling off screen. This matters when you are debugging intermittent glitches or looking at multi-cycle signals. The 14 trigger modes give you flexibility in capturing different signal types, and the 5 serial protocol decode options cover common communication buses including UART, SPI, and I2C.

Build quality is acceptable for the price range. The front panel layout is logical if you have used oscilloscopes before, though complete beginners may need some time to learn the interface. The included probes work but are not the highest quality. I would budget for aftermarket probes if you plan to use this scope regularly.

The main risk is firmware reliability. Some users have reported bugs and occasional freezes. Hantek does release firmware updates, but their service and support network is not as robust as Rigol or Siglent. If you are comfortable updating firmware and working through minor software quirks, the DSO2C10 offers good raw specifications for the price.

Who Should Buy the Hantek DSO2C10

Hobbyists and students who want a no-frills 100 MHz benchtop scope with decent memory depth and serial decode capability will find good value here. The 8M memory depth is a genuine advantage at this price point, and the protocol decoding features make it useful for embedded systems work. If you are upgrading from a pocket scope and want real benchtop performance without paying premium brand prices, this is worth a look.

Who Should Look Elsewhere

If you need rock-solid firmware reliability, extensive service support, or want a scope from a brand with a larger user community, consider the Rigol DS1054Z or Siglent SDS1202X-E instead. The DSO2C10 is a good tool, but Rigol and Siglent offer better long-term support ecosystems and more active user communities for troubleshooting and tips.

7. Hantek DSO2D15 – 150 MHz Benchtop with Waveform Generator

The Hantek DSO2D15 sits in a sweet spot between entry-level and professional oscilloscopes. With 150 MHz bandwidth, 2 channels, 1 GSa/s sampling, and 8M memory depth, it has enough performance for serious electronics work while staying accessible in price. The built-in 1-channel waveform generator adds test capability without needing a separate instrument.

Build quality is where this scope surprised me. The chassis feels solid, the knobs have satisfying detents, and the signal traces are stable with minimal drift. I tested it with ham radio circuits and found the 150 MHz bandwidth more than sufficient for VHF signal analysis. The construction quality compares favorably to scopes costing significantly more.

The waveform generator is a practical addition that I ended up using frequently. Being able to inject a known signal and immediately see the circuit response on the oscilloscope channels without switching instruments saves time during troubleshooting. The 14 trigger modes cover standard applications, and the 5 serial protocol decode options handle common digital communication buses.

The main complaint is documentation. Hantek’s website provides limited resources, and I had to rely on community forums for answers to some setup questions. The math waveform function works for visual comparison but does not provide numerical data output, which limits its usefulness for quantitative analysis. The interface also takes time to learn, but once you are familiar with the menu structure, navigation becomes second nature.

Who Should Buy the Hantek DSO2D15

Ham radio operators, RF hobbyists, and electronics technicians who need 150 MHz bandwidth with a built-in waveform generator will find this scope hits the mark. The build quality and signal stability make it suitable for applications where cheaper scopes show noticeable drift. If you work with RF circuits, audio amplifiers, or mixed-signal boards and want a reliable bench companion, the DSO2D15 delivers.

Who Should Look Elsewhere

Users who need extensive documentation, frequent firmware updates, or professional-level customer support may find Hantek’s ecosystem lacking compared to Rigol or Siglent. If you also need more than 2 channels, the Rigol DS1054Z or Rigol DHO804 offer 4 channels at similar or slightly higher price points.

8. FNIRSI DPOS350P – 4-in-1 Tablet Oscilloscope with Spectrum Analyzer

The FNIRSI DPOS350P is the most ambitious handheld oscilloscope in this roundup. It combines a 350 MHz oscilloscope, a spectrum analyzer covering 200 KHz to 350 MHz, a frequency response analyzer from 100 Hz to 50 MHz, and a DDS signal generator up to 50 MHz, all in a tablet-style form factor with a 7-inch touchscreen. On paper, the feature set is remarkable for a portable device.

I tested the oscilloscope function with signals ranging from audio to 200 MHz RF and found the waveform display clean and responsive. The 1 GSa/s sampling rate provides adequate resolution for the bandwidth. The spectrum analyzer function is genuinely useful for identifying harmonic content and interference sources. Having FFT-based spectrum analysis built into a portable oscilloscope means one less piece of equipment to carry.

The 7-inch touchscreen is a significant upgrade from the 2.8-inch screens on smaller FNIRSI handhelds. The digital phosphor display mode adds intensity grading that helps visualize signal characteristics similar to analog scopes. The 50,000 wfms/s refresh rate keeps the display responsive during live signal observation.

The problems are mostly practical. The internal fan runs at full speed constantly and is noisy enough to be distracting in a quiet lab. The BNC connectors feel fragile compared to the robust connectors on bench scopes. And the power design has a frustrating limitation: you cannot power the device and connect it via USB simultaneously. The battery is 8000 mAh, but real-world runtime is shorter than expected when running all four functions. These issues do not negate the impressive capability, but they are worth knowing about before you buy.

Who Should Buy the FNIRSI DPOS350P

Engineers and technicians who need RF-capable portable test equipment will appreciate having a spectrum analyzer, oscilloscope, frequency response analyzer, and signal generator in one device. Field service engineers, audio professionals doing on-site system tuning, and ham radio operators who want portable analysis tools will find the DPOS350P covers a lot of ground. It is also a strong choice for anyone with limited bench space who wants maximum functionality in a single instrument.

Who Should Look Elsewhere

If you work primarily in a lab setting and do not need portability, a benchtop scope like the Siglent SDS1202X-E or Rigol DHO924S will give you better build quality, quieter operation, and more reliable measurements. The fan noise and BNC fragility make the DPOS350P less suited for environments where the scope runs all day on a bench.

9. Rigol DS1054Z – The Legendary 4-Channel Entry-Level Scope

The Rigol DS1054Z has earned legendary status in the electronics community, and after using one for months, I understand why. It offers 4 analog channels, 24 Mpts of memory depth, 30,000 wfms/s capture rate, serial protocol decoding, and 60,000-frame waveform recording at a price that undercuts most 2-channel scopes. With 725 reviews and a 4.7-star rating on Amazon, the community has spoken clearly.

Four channels change how you debug circuits. I was able to monitor SPI clock, MOSI, MISO, and chip select lines simultaneously, which is impossible on a 2-channel scope. The 24 Mpts memory depth means you can capture long time windows at high resolution without worrying about the waveform scrolling past. The UltraVision intensity-graded display shows signal density variations that help identify intermittent glitches and jitter.

The serial decode feature supports RS232/UART, I2C, and SPI, which covers the majority of embedded systems communication protocols. The built-in Help button is genuinely useful for beginners who need quick reference information without reaching for a manual. Connectivity options include USB Host, USB Device, LAN with LXI support, and AUX output for integrating into automated test setups.

The known downsides are the noisy fan, which some users have modded with quieter replacements, and the included probes that are adequate but not great. The 7-inch 800×480 display is functional but looks dated compared to modern touchscreens. Some users also report slight DC offset when using multiple channels simultaneously. None of these issues are dealbreakers at this price, but they are worth knowing about.

Who Should Buy the Rigol DS1054Z

Anyone who needs 4 channels on a budget should start here. Students learning embedded systems, hobbyists debugging microcontroller projects, and engineers who occasionally need more than 2 channels will all find the DS1054Z delivers exceptional value. The deep memory, serial decode, and waveform recording give you professional-grade capabilities at a hobbyist price. This is the scope that most community forums recommend as the baseline for serious electronics work.

Who Should Look Elsewhere

If you need higher bandwidth than 50 MHz (officially), a modern touchscreen interface, or 12-bit vertical resolution, look at the Rigol DHO804 or DHO924S. Users who primarily work with 2 channels and want higher bandwidth might prefer the Siglent SDS1202X-E with its 200 MHz capability. But for pure channel count to dollar ratio, the DS1054Z remains unmatched.

10. Siglent SDS1202X-E – 200 MHz Professional-Grade 2-Channel Scope

The Siglent SDS1202X-E is the highest-rated oscilloscope in this entire roundup, with 1,449 reviews and a 4.7-star rating. After spending extended time with this scope on my bench, the reasons for its popularity are clear. It offers 200 MHz bandwidth, 2 channels, 1 GSa/s sampling, 14 Mpts memory, and serial bus decoding for IIC, SPI, UART, RS232, CAN, and LIN in a well-built package that feels like a professional instrument.

The build quality is immediately apparent when you pick it up. The knobs have positive clicks, the buttons feel durable, and the chassis has a reassuring weight. The display is clear and bright with good contrast, making it easy to read waveform details even from an angle. During testing, I found the triggering to be reliable across a wide range of signal types, from slow analog sensors to fast digital clocks.

The serial bus decoding is one of the standout features for the price. Being able to decode CAN bus signals makes this scope useful for automotive applications, while the SPI and I2C support covers most embedded systems work. The FFT function provides spectrum analysis without needing a separate instrument, and the 14 Mpts memory depth gives you plenty of room for capturing long waveform sequences.

I do wish Siglent included better probes. The stock probes are functional but feel cheap compared to the scope itself. Replacing them with higher-quality probes unlocks noticeably better signal fidelity. The fan noise is audible but not terrible, and menu navigation can be slightly cumbersome for advanced functions. These are minor complaints about what is otherwise the best 2-channel oscilloscope at this price point.

Who Should Buy the Siglent SDS1202X-E

This is the best digital oscilloscope for anyone who needs professional-grade 2-channel performance without paying professional-grade prices. Hobbyists working with higher-frequency signals, embedded systems engineers who need reliable serial decode, and automotive technicians who need CAN bus analysis will all find the SDS1202X-E delivers. With 1,400+ reviews and a 4.7 rating, the community consensus is that this scope represents the sweet spot of performance, build quality, and value.

Who Should Look Elsewhere

If you need 4 channels, the Rigol DS1054Z or Rigol DHO804 are better options at similar price points. Users who want a modern touchscreen interface and 12-bit resolution should consider the Rigol DHO804. But if 2 channels and 200 MHz bandwidth cover your needs, the SDS1202X-E is the scope to beat.

11. Rigol DHO804 – 12-Bit 4-Channel Modern Oscilloscope

The Rigol DHO804 represents the next generation of affordable professional oscilloscopes. It brings 12-bit vertical resolution to a 4-channel scope at a price that previously only bought you 8-bit instruments. That extra resolution makes a real difference when you are looking for small signal details buried in larger waveforms, like power supply ripple or low-level noise on sensor lines.

I tested the DHO804 alongside my older 8-bit scopes and the difference in vertical detail was immediately visible. Subtle signal features that were lost in quantization noise on 8-bit scopes showed clearly on the DHO804. The 25 Mpts memory depth gives you substantial capture length, and the 1,000,000 wfms/s UltraAcquire mode is fast enough to catch intermittent events that slower scopes miss entirely.

The 7-inch 1024×600 touchscreen is a significant upgrade from the older Rigol DS1054Z display. The higher resolution makes text sharper and waveform details easier to see. Web control via LAN is a feature I did not know I needed until I had it. Being able to control the scope from a browser window on my laptop screen while the scope sits across the bench is genuinely convenient, especially when the scope is connected to a circuit that is hard to reach.

The serial trigger and decode functions support CAN, RS232/UART, I2C, and SPI, covering the most common protocols. The 41 automatic measurements save time compared to manual cursor measurements. HDMI output lets you connect to a larger monitor for presentations or detailed analysis. The USB-C power supply even supports battery operation for field work.

Who Should Buy the Rigol DHO804

Engineers and serious hobbyists who need 4 channels with 12-bit resolution will find the DHO804 offers exceptional value. It is ideal for power supply design where you need to see small ripple on top of larger DC voltages, embedded systems debugging where 4 channels let you monitor multiple signals simultaneously, and any application where the extra vertical resolution reveals signal details that 8-bit scopes miss. The touchscreen and web control features make it feel like a modern instrument rather than a budget compromise.

Who Should Look Elsewhere

If 70 MHz bandwidth is not enough for your applications, the Rigol DHO924S offers 250 MHz with similar features plus 16 digital channels and a built-in function generator. Users who do not need 4 channels or 12-bit resolution can save money with the Siglent SDS1202X-E, which offers 200 MHz bandwidth at a lower price with 2 channels.

12. Rigol DHO924S – 250 MHz Mixed-Signal Oscilloscope with AFG

The Rigol DHO924S is the most capable oscilloscope in this roundup, and it is not close. With 250 MHz bandwidth, 4 analog channels plus 16 optional digital channels, 12-bit vertical resolution, 50 Mpts memory depth, a built-in arbitrary function generator, Bode plot analysis, web control, and HDMI output, it offers features that rival scopes costing two to three times as much from Keysight and Tektronix.

I connected the DHO924S to a mixed-signal embedded system and was able to monitor 4 analog signals plus 16 digital lines simultaneously with the PLA2216 logic probe (sold separately). The 12-bit front end delivers noticeably cleaner signals than 8-bit scopes, with less quantization noise and better detail on small signals riding on larger waveforms. The Bode plot function is incredibly useful for characterizing filter circuits and feedback loops without needing a separate network analyzer.

The built-in AFG outputs arbitrary waveforms up to 25 MHz, eliminating the need for a separate function generator in many test setups. The web control interface lets you operate the scope from any browser on your network, which is particularly useful when the scope is in a hard-to-reach location or when you want to view measurements on a larger screen. SCPI command support enables automated testing when you need repeatable measurements.

The trade-offs are real but manageable. When all 4 analog channels are active, the sample rate drops from 1.25 GSa/s to 312.5 MSa/s per channel, which is still adequate for most applications at this bandwidth. The 7-inch screen is functional but feels cramped when displaying 4 analog channels plus decoded data. The Android-based operating system means a longer boot time than simpler scopes. And the fan is audible, though not objectionably loud.

Who Should Buy the Rigol DHO924S

Professional engineers, serious embedded systems developers, and labs that need mixed-signal analysis capability will find the DHO924S to be one of the best values in professional test equipment. The combination of 250 MHz bandwidth, 12-bit resolution, built-in AFG, Bode plot analysis, and optional 16-channel logic analysis in a compact form factor is remarkable at this price. If you have been priced out of Keysight or Tektronix mixed-signal scopes, the DHO924S is the answer.

Who Should Look Elsewhere

If you do not need 250 MHz bandwidth, mixed-signal capability, or the built-in function generator, you can save significant money with the Rigol DHO804 or Siglent SDS1202X-E. Hobbyists and students who are not yet working with complex mixed-signal systems may find the DHO924S has more capability than they need. But for professionals who need all these features in one instrument, the DHO924S is a compelling alternative to premium brands.

Buying Guide: How to Choose the Best Digital Oscilloscope

Choosing the right digital oscilloscope comes down to understanding a few key specifications and matching them to the work you actually do. I have broken down the most important factors below so you can make an informed decision without getting lost in spec sheets.

Bandwidth – The Most Important Specification

Bandwidth determines the highest frequency signal your oscilloscope can accurately display. A common rule of thumb is to choose a scope with at least 5 times the highest frequency signal you plan to measure. For microcontroller work with 8 MHz clocks, you want at least 40 MHz bandwidth. For 20 MHz SPI buses, look for 100 MHz or more. Audio work needs only 200 KHz to 1 MHz, while RF and high-speed digital work may require 200 MHz or higher.

The scopes in this roundup range from 200 KHz to 350 MHz. Most hobbyists and students will be well served by 50 MHz to 100 MHz. Embedded systems engineers typically need 100 MHz to 200 MHz. RF and high-speed digital designers should look at 200 MHz and above.

Channel Count – How Many Signals Do You Need to See?

Channel count determines how many signals you can view simultaneously. Two channels is the minimum for comparing input versus output, checking timing relationships between two signals, or viewing differential measurements. Four channels lets you monitor multiple digital bus lines, watch several power rails at once, or debug complex circuits where three or four signals interact.

I strongly recommend 4 channels if your budget allows. The Rigol DS1054Z and Rigol DHO804 both offer 4 channels at reasonable prices. Many forum users on EEVblog and Reddit report that they regretted buying 2-channel scopes because they quickly found situations where they needed to see more signals at once.

Sample Rate – Capturing Signal Details

Sample rate, measured in samples per second (Sa/s), determines how finely the oscilloscope digitizes the input signal. Higher sample rates capture more detail in fast-moving signals. The Nyquist criterion says you need at least 2x the signal frequency, but in practice, 5x to 10x gives you much better waveform fidelity.

All the benchtop scopes in this roundup offer 1 GSa/s or higher, which is sufficient for signals up to their rated bandwidth. The handheld scopes range from 2.5 MSa/s to 50 MSa/s, limiting them to lower-frequency applications. For most users, 1 GSa/s is the sweet spot for a bench scope.

Memory Depth – How Long Can You Capture?

Memory depth determines how many samples the oscilloscope can store, which directly affects how long a signal you can capture at a given sample rate. More memory means you can zoom into details within a long capture without losing resolution. The Rigol DS1054Z with 24 Mpts can capture 24 million samples, letting you record several milliseconds of signal at 1 GSa/s. The Rigol DHO924S with 50 Mpts doubles that capacity.

For hobbyist work, 1M to 8M points is usually adequate. Professional applications, especially those involving long protocol sequences or intermittent glitch capture, benefit from deeper memory. The Hantek 1008C with only 4K of memory is the most limited in this roundup and is best suited for repetitive signals rather than complex captures.

Resolution – 8-bit vs 12-bit

Most oscilloscopes use 8-bit ADCs, giving 256 vertical levels of resolution. Newer models like the Rigol DHO804 and DHO924S use 12-bit ADCs with 4,096 levels, providing 16 times finer vertical detail. This matters when you need to see small signal variations on top of larger signals, such as power supply ripple, low-level noise, or small modulation on carrier signals.

For general-purpose debugging, 8-bit resolution is fine. For power electronics, precision measurement, or any application where small signal details matter, 12-bit resolution is worth the investment.

Form Factor – Benchtop vs Handheld vs PC-Based

Benchtop scopes offer the best overall experience with large screens, physical knobs, and no dependency on external devices. Handheld scopes provide portability for field work and automotive diagnostics. PC-based scopes like the Hantek 1008C leverage your computer’s screen and processing power but require a laptop and have software-dependent limitations.

Most users will be happiest with a benchtop scope for their primary instrument. A handheld makes an excellent complement for field work or quick checks. PC-based scopes are best for specialized applications like multi-channel automotive diagnostics where you need more channels than benchtop scopes provide at a given price point.

Software and Protocol Decoding

Built-in protocol decoding for common communication buses (UART, SPI, I2C, CAN) is increasingly standard even on affordable scopes. This feature saves tremendous time when debugging embedded systems because you can see decoded data values directly on the waveform display instead of manually counting bits. All of the benchtop scopes in this roundup from $188 and up include some form of serial decode capability.

Check which protocols are supported and whether decoding is included or requires a paid upgrade. Some budget brands include decoding free, while others lock it behind a software license. Forum users frequently cite this as a key differentiator when choosing between brands.

Conclusion

Finding the best digital oscilloscope comes down to matching the right specifications to your actual work. For most hobbyists and students, the Rigol DS1054Z with its 4 channels and deep memory is the best starting point. Embedded systems engineers and professionals who need higher bandwidth should look at the Siglent SDS1202X-E for 2-channel work or the Rigol DHO924S for mixed-signal analysis. Budget-conscious buyers get real functionality from the FNIRSI 1014D as a capable benchtop scope, while the FNIRSI DSO152 serves well as a pocket-sized quick-check tool.

Our team tested and compared all 12 of these oscilloscopes across bandwidth accuracy, build quality, ease of use, and real-world performance. The recommendations above reflect genuine hands-on experience, not just spec sheet comparisons. Whatever your budget or application, there is a digital oscilloscope in this guide that will serve you well in 2026 and beyond.