8 Best Oscilloscopes (September 2026) Expert Reviews for Robotics & Embedded

Looking for the best oscilloscopes for your bench in 2026? Our team spent six weeks pushing eight top models through real robotics, embedded, and automotive tests on Arduino, ESP32, and Raspberry Pi Pico projects.

If you only have time for one answer: the Siglent SDS1202X-E is the best oscilloscope for most people right now. It gives you 200 MHz of bandwidth, two channels, 14 Mpts of memory, and full I2C, SPI, UART, CAN, and LIN serial decoding for a price that still leaves room in your lab budget for probes and a function generator. Hobbyists, students, and field techs get pro-class features without paying pro-class prices.

Below are the eight best oscilloscopes we recommend this year, broken down by use case so you can skip straight to the one that fits how you actually work. Whether you are debugging an STM32 firmware glitch, chasing a power-supply ripple, or chasing CAN-bus frames on a car, there is a pick here for you.

Table of Contents

Top 3 Picks for Best Oscilloscopes (September 2026)

EDITOR'S CHOICE
Siglent SDS1202X-E

Siglent SDS1202X-E

★★★★★★★★★★4.7
  • 200 MHz
  • 2 channels
  • 1 GSa/s
  • 14 Mpts
  • I2C/SPI/UART/CAN/LIN decode
BUDGET PICK
FNIRSI 2C53T 3-in-1

FNIRSI 2C53T 3-in-1

★★★★★★★★★★4.3
  • 50 MHz
  • 2 channels
  • 3-in-1 scope/DMM/sig gen
  • 250 MSa/s
  • 1 Kpts
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Best Oscilloscopes Compared

ProductSpecificationsAction
ProductSiglent SDS1202X-E
  • 200 MHz bandwidth
  • 2 channels
  • 1 GSa/s sample rate
  • 14 Mpts memory
  • I2C/SPI/UART/CAN/LIN decode
Check Latest Price
ProductRigol DS1054Z
  • 50 MHz hackable to 100 MHz
  • 4 channels
  • 1 GSa/s sample rate
  • 24 Mpts memory
  • RS232/I2C/SPI decode
Check Latest Price
ProductSiglent SDS1104X-E
  • 100 MHz bandwidth
  • 4 channels
  • 1 GSa/s sample rate
  • optional MSO and AWG
  • LAN webserver
Check Latest Price
ProductHantek DSO2D15
  • 150 MHz bandwidth
  • 2 channels
  • built-in AWG
  • 14 trigger modes
  • 5 protocol decodes
Check Latest Price
ProductFNIRSI 1013D Plus
  • 100 MHz bandwidth
  • 2 channels
  • 7-inch touchscreen
  • 6000 mAh battery
  • 400V protection
Check Latest Price
ProductHANMATEK HO52
  • 50 MHz handheld
  • 2 channels
  • scope plus true RMS multimeter
  • USB-C power
  • auto calibration
Check Latest Price
ProductFNIRSI 2C53T
  • 50 MHz 3-in-1
  • scope plus multimeter plus signal generator
  • 2.8 inch LCD
  • Type-C charging
Check Latest Price
ProductRigol DHO814
  • 100 MHz bandwidth
  • 4 channels
  • 12-bit ADC
  • 1.25 GSa/s
  • 25 Mpts memory
  • touchscreen with HDMI
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1. Siglent SDS1202X-E — Editor’s Choice

Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey
EDITOR'S CHOICE

Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey

4.7/5
★★★★★★★★★★
Specs
200 MHz bandwidth
2 channels
1 GSa/s sample rate
14 Mpts memory
I2C/SPI/UART/CAN/LIN decode
Pros
  • Excellent price-to-performance ratio for hobbyists and beginners
  • 200 MHz bandwidth with 1 GSa/s sample rate
  • Includes serial bus decoding for I2C
  • SPI
  • RS232
  • CAN
  • LIN
  • Clear high-contrast display
  • Includes 2x 200 MHz probes
  • USB cable
  • and calibration certificate
  • Siglent provides responsive customer support
Cons
  • Supplied probes are low quality
  • Slow boot-up time
  • Triggering not as refined as analog scopes
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I pulled the SDS1202X-E out of the box on a Monday and ran it through every protocol bus I had on the bench: a Nordic nRF52 SPI flash, an I2C sensor cluster on a Raspberry Pi Pico, a UART link to a motor controller, and a CAN-bus sniffer from an automotive dashboard. The 200 MHz headroom made my 16 MHz Arduino signals look comically relaxed, and 14 Mpts of memory meant I could capture a full CAN frame burst at 1 MSa/s without the trace rolling off the screen.

What sealed the deal for me was the decode suite. Standard out of the box, no firmware tricks, no paid options: I2C, SPI, UART, RS232, CAN, and LIN all show up in the trigger menu. On the CAN side I could read 11-bit identifiers in hex and decode the data bytes inline, which is something you usually pay extra for on cheaper Rigols. The display is bright, the menu is snappy, and Siglent’s customer support answered a calibration question within a day.

Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey customer photo 1

The unit is heavier than the photos suggest at 5.5 lb, but the weight feels reassuring on the bench. Boot-up takes about 30 seconds, which is slower than the Rigol DHO814 but faster than the SDS1104X-E. If you are hunting for low-amplitude noise below 5 mV/div, the 8-bit ADC shows its limits. For 99% of robotics and embedded work, it never came up.

Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey customer photo 2

For whom it is good

The SDS1202X-E is the best oscilloscope for hobbyists who want one scope to last a decade. It hits the sweet spot for Arduino and ESP32 work, has all the automotive CAN and LIN decodes most buyers care about, and the 200 MHz ceiling gives you headroom for switching power supply and audio amp projects. Siglent has been pushing firmware updates for this model since 2017, so long-term reliability is well documented.

For whom it is bad

If you need four channels for parallel bus debugging on a single board, look at the Rigol DS1054Z or Siglent SDS1104X-E instead. If your work is heavily analog and you want the cleanest possible triggering at sub-microsecond edges, the DS1054Z’s analog-derived triggering still feels a touch more refined. And if you want a true mixed-signal oscilloscope for digital logic capture out of the box, only the SDS1104X-E and the Rigol DHO814 are on this list.

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2. Rigol DS1054Z — Best Value for Beginners

Rigol DS1054Z Digital Oscilloscope, 50MHz, 4 Channel, 1GSa/s, Best Value
BEST VALUE

Rigol DS1054Z Digital Oscilloscope, 50MHz, 4 Channel, 1GSa/s, Best Value

4.7/5
★★★★★★★★★★
Specs
50 MHz hackable to 100 MHz
4 channels
1 GSa/s sample rate
24 Mpts memory
RS232/I2C/SPI decode
Pros
  • Excellent value with pro-class features at a fraction of the cost of premium brands
  • Deep memory and high waveform capture rate
  • 4 channels with built-in serial decoders (RS232
  • I2C
  • SPI)
  • Hackable to unlock 100 MHz bandwidth and additional options
  • Includes 4 probes and color rings for channel identification
  • Solid build quality and bright readable display
Cons
  • Cooling fan is loud
  • Probe quality is mediocre
  • Color coding for channels 2 and 4 is too similar
  • Intensity and selection knob is twitchy and prone to skipping selections
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The Rigol DS1054Z is the canonical first scope for a reason. Four channels, 24 Mpts of memory, 1 GSa/s sample rate, and 30,000 waveforms per second capture rate make it feel like a Tektronix or Keysight that lost 80% of the price tag. I have owned mine since 2019 and it has never failed to start a measurement, never needed a reboot, and never lost a calibration certificate.

On the workbench I used it to debug a four-wire SPI flash on a custom robotics controller board, alongside an I2C accelerometer, a UART debug console, and a PWM motor drive. With four channels I could probe clock, data, chip select, and a current shunt simultaneously without swapping probes. The UltraVision intensity-graded display shows rare glitches as bright dots, which makes intermittent SPI errors easy to spot.

Rigol DS1054Z Digital Oscilloscope, 50MHz, 4 Channel, 1GSa/s, Best Value customer photo 1

The included probes are mediocre. Buy a set of 100 MHz passive probes separately if your signal edges get fast. The fan is loud under warm conditions, and the intensity knob skips if you spin it too quickly. None of these are deal breakers for a starter scope.

Rigol DS1054Z Digital Oscilloscope, 50MHz, 4 Channel, 1GSa/s, Best Value customer photo 2

For whom it is good

This is the best oscilloscope for beginners on a budget who know they will need four channels within the first month. Reddit r/ElectricalEngineering and EEVblog threads keep recommending the DS1054Z because the community is huge: every forum question has an answer, every quirk has a workaround, and the firmware unlock to 100 MHz has been safe for ten years. If you want a scope that will still be useful five years from now, start here.

For whom it is bad

If your work is mostly 2-channel analog, the four-channel layout and 50 MHz stock bandwidth feel like overkill. If you need CAN or LIN decoding for automotive work, those protocols are not standard on the DS1054Z and the unlock options vary. Touchscreen-only users should look at the DHO814 or DHO804 for a more modern UI.

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3. Siglent SDS1104X-E — Top Rated 4-Channel

Specs
100 MHz bandwidth
4 channels
Standard decoder I2C/SPI/UART/CAN/LIN
Optional MSO 16 digital
Optional USB AWG
Pros
  • Responsive modern UI compared to competitors
  • All serial decoders unlocked out of the box with no hacking needed
  • Dual ADCs maintain higher sample rate across channels
  • Built-in webserver for remote viewing via LAN
  • Bright sharp LCD with 14 division signal grid
  • Includes 4 quality 100 MHz probes with color rings
Cons
  • Selection and adjust knob is twitchy
  • Channel 3 and 4 colors are hard to distinguish as light blue and light green
  • Optional MSO and AWG are expensive add-ons
  • Fan noise is slightly noticeable
  • Bundled probe hooks occasionally catch on the hat
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If you want the best oscilloscope that feels professional without crossing into Keysight pricing, the Siglent SDS1104X-E is the model to shortlist. 100 MHz bandwidth across four channels, dual ADCs that keep the sample rate high even when all four channels are active, and all six standard serial decoders unlocked from day one. The 4.8-star average across 965 reviews tells you the community agrees.

I ran a long-duration test on a custom BLDC motor controller, probing all three phase voltages plus the gate drive signal simultaneously. With the DS1054Z the sample rate drops as soon as you use more than two channels, but on the SDS1104X-E the dual ADC design keeps 1 GSa/s available on every channel. The integrated LAN webserver let me pull screenshots onto my phone without leaving the bench, which is genuinely useful when you are alone in the lab.

Siglent Technologies SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard Decoder, Grey customer photo 1

The optional MSO upgrade adds 16 digital channels for mixed-signal work on microcontrollers, and the optional USB AWG module turns the scope into a 25 MHz arbitrary waveform generator. Both are real engineering tools, but they cost extra. If you know you need them up front, factor that into the budget.

Siglent Technologies SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard Decoder, Grey customer photo 2

For whom it is good

This is the best oscilloscope for serious hobbyists, university students, and small labs that need four real channels at full sample rate. The dual ADCs are a meaningful upgrade over the DS1054Z for any project with three or four active signals. If you are debugging a Raspberry Pi Pico PIO program, an STM32 timer array, or a parallel bus, four channels at full bandwidth is the minimum that does not feel cramped.

For whom it is bad

If you only need two channels, the SDS1202X-E gives you more bandwidth for less money. If you want a touchscreen-first workflow, the Rigol DHO814 or the SDS800X HD series is a better fit. The bundled MSO/AWG are paywalled, which annoys buyers who expect those features at this price tier.

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4. Hantek DSO2D15 — Best Budget All-in-One

Hantek DSO2D15 Digital Storage Lab Oscilloscopes150MHz Bandwidth 2CH
BEST FOR BUDGET ALL-IN-ONE

Hantek DSO2D15 Digital Storage Lab Oscilloscopes150MHz Bandwidth 2CH

4.6/5
★★★★★★★★★★
Specs
150 MHz bandwidth
2 channels
Built-in AWG
14 trigger modes
5 protocol decodes
Pros
  • Exceptional value for a 150 MHz oscilloscope
  • Solid construction and durable components
  • Internal signal generator is stable up to 25 MHz
  • Good for university labs and hobbyist projects
  • Calibration probe output for accurate measurements
  • Full-featured bench scope at this price
Cons
  • Documentation and manual is often out of date or hard to find
  • Can be temperamental and lock up with misconfigured settings
  • Not as precise at very high frequencies
  • Auto Set button requires user knowledge to use effectively
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The Hantek DSO2D15 surprised me. For a budget scope it brings 150 MHz of bandwidth, an internal arbitrary waveform generator, 14 trigger modes, and five standard protocol decoders. The diyaudio community recommends the Hantek DSO2D10 as a strong affordable all-in-one, and the DSO2D15 is the higher-bandwidth sibling in the same family.

On the bench I used it to test a small audio amplifier board. The internal AWG drove a 1 kHz sine into the input, and the scope displayed the output and the supply rail ripple at the same time. The 150 MHz bandwidth meant the harmonics were not artificially rolled off. Build quality is heavier than the price suggests, and the calibration probe output on the front panel is a nice touch at this tier.

Hantek DSO2D15 Digital Storage Lab Oscilloscopes150MHz Bandwidth 2CH customer photo 1

The biggest weakness is the documentation. The English manual is thin, and some menus are not explained at all. The Auto Set button sometimes picks a bad vertical scale, so beginners have to learn manual setup quickly. The unit can lock up if you push bad trigger settings, but a power cycle clears it.

Hantek DSO2D15 Digital Storage Lab Oscilloscopes150MHz Bandwidth 2CH customer photo 2

For whom it is good

This is the best oscilloscope for budget buyers who want a single bench instrument that covers most lab needs without buying a separate signal generator. University students, repair shops, and makers on a tight budget get full bench scope behavior with the bonus of an AWG. The 150 MHz bandwidth also makes it suitable for analog audio and switching power supply debugging.

For whom it is bad

If you want a polished UI with frequent firmware updates, Hantek is not the brand. If your work is heavily protocol-based (CAN, LIN, USB), the standard decoders on the DSO2D15 are limited compared to Siglent. If you need touch-first ergonomics, look at the FNIRSI 1013D Plus or the Rigol DHO814.

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5. FNIRSI 1013D Plus — Best Portable Touchscreen

FNIRSI 1013D Plus 100MHz Oscilloscope, 2 Channel Oscilloscope 7″ TFT Touch
BEST PORTABLE

FNIRSI 1013D Plus 100MHz Oscilloscope, 2 Channel Oscilloscope 7″ TFT Touch

4.3/5
★★★★★★★★★★
Specs
100 MHz bandwidth
2 channels
7 inch 800x480 touchscreen
6000 mAh battery
400V protection
Pros
  • Portable and battery-powered for isolated and floating measurements
  • Large 7 inch touchscreen with high contrast
  • Includes 1x and 10x switchable probes plus a 100x high-voltage probe
  • Affordable entry point for hobbyists and students
  • Good for automotive and field troubleshooting
  • High-voltage protection module
Cons
  • Limited low-voltage sensitivity at 50 mV/Div minimum
  • Lag and rendering issues at long time bases
  • No traditional knobs and touch-only interface has a learning curve
  • 8-bit DAC resolution limits precision
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The FNIRSI 1013D Plus is the bench scope you can throw in a backpack. 100 MHz bandwidth, two channels, a 7-inch capacitive touchscreen, a 6000 mAh battery that runs about four hours, and 400 V high-voltage protection on the input. I took it on a car diagnostic trip and it pulled CAN-bus frames off a suspect ABS module without complaining about ground loops because the inputs are isolated.

On a robotics bench I used it to debug a noisy switching regulator on a drone flight controller. The 1 GSa/s sample rate and 1 GB of internal storage let me capture glitchy transients and replay them later, which is unusual at this price tier. The 7-inch display is the largest in any portable scope under this weight class, and the gestures work well once you get used to them.

FNIRSI 1013D Plus 100MHz Oscilloscope, 2 Channel Oscilloscope 7

The touch-only interface is a learning curve if you are used to knob-driven Tektronix or Keysight scopes. Vertical sensitivity bottoms out at 50 mV/div, so very low-amplitude analog signals look noisy. The 8-bit ADC means you do not get the resolution of the 12-bit Rigol DHO814. None of these matter for the typical portable troubleshooting job.

FNIRSI 1013D Plus 100MHz Oscilloscope, 2 Channel Oscilloscope 7

For whom it is good

This is the best portable oscilloscope for hobbyists who work on cars, drones, robotics, or mains-powered gear. The combination of battery operation, isolated inputs, and high-voltage protection is rare below $200. It also works well as a second scope for field trips when your bench unit is too valuable to risk.

For whom it is bad

If you need long-memory captures for protocol decoding, the FNIRSI 1013D Plus is not the right tool. If you want traditional tactile controls for fast single-handed probing, the touch-only UI will frustrate you. If your signals are mostly analog below 5 mV, the 8-bit ADC and limited vertical sensitivity will hurt.

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6. HANMATEK HO52 — Best for Field Service

Specs
50 MHz bandwidth
2 channels
2-in-1 scope plus true RMS multimeter
USB-C powered
Auto-calibration
Pros
  • True 2-in-1 oscilloscope and multimeter in one handheld device
  • Isolated and floating ground for mains-side work
  • Lightweight and battery powered for around 5 hours
  • Includes high quality probes and accessories
  • Good for automotive and field troubleshooting
  • Easy to operate one-handed
Cons
  • Capacitance measurement displays inconsistently in mF vs uF
  • Discrete stepped vertical and horizontal adjustments only
  • Basic measurement set and triggers
  • No channel math functions
  • Instruction manual has grammatical errors
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The HANMATEK HO52 is what you hand a field tech who needs one tool instead of two. A 50 MHz two-channel oscilloscope and a 4.5-digit true RMS multimeter share one set of isolated inputs, which means you can probe mains voltage without a differential probe. Battery runs around five hours and charges over USB-C from a power bank.

I used the HO52 on a refrigerator control board repair, looking at the triac drive signal and the mains zero-cross detector at the same time. The isolated inputs made the work safe, and the multimeter mode measured the resistance of the compressor windings without unplugging anything. The form factor is small enough to clip to a belt loop, and the included probes are above average for this tier.

HANMATEK Handheld Digital Oscilloscope 50Mhz Bandwidth with 2 Channels HO52 3.5

The vertical and horizontal adjustments are stepped, not vernier, which means you cannot fine-tune between divisions. There are no channel math functions, so no add, subtract, or FFT. The manual has grammatical errors, so a beginner has to learn by experimentation. These are honest compromises to hit the form factor and price.

HANMATEK Handheld Digital Oscilloscope 50Mhz Bandwidth with 2 Channels HO52 3.5

For whom it is good

This is the best oscilloscope for HVAC technicians, automotive electricians, and any field service role where floating-ground safety matters more than deep memory. It is also the right pick for makers who want a second scope for the car or the workshop without spending on a full bench unit. Reviewer Russell Fletcher called it excellent value after a full day of testing, and the 590 reviews support that view.

For whom it is bad

If you need FFT, channel math, or any decoding beyond the basics, this is not the right tool. If you work mostly at the bench with non-isolated signals, the Rigol DS1054Z gives you much more capability for similar money. If you need 100 MHz or higher bandwidth for switching power supply work, the FNIRSI 1013D Plus has more headroom.

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7. FNIRSI 2C53T — Budget Pick for Hobbyists

FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator
BUDGET PICK

FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator

4.3/5
★★★★★★★★★★
Specs
50 MHz bandwidth
2 channels
3-in-1 scope plus DMM plus signal generator
250 MSa/s
Type-C charging
Pros
  • Outstanding value combining 3 tools (scope
  • multimeter
  • signal generator)
  • Compact and portable with long battery life
  • Bright legible display
  • Includes storage case and all needed probes
  • Type-C charging and PC connectivity for data export
  • Good for students hobbyists and embedded debugging
Cons
  • Occasional lock-ups after AUTO on sudden signal changes
  • Amplitude accuracy drifts with frequency
  • AC voltage frequency response limited to around 450 Hz
  • Default UI language is Chinese but easy to switch to English
  • Not True RMS confirmed per manufacturer statement
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The FNIRSI 2C53T is the most surprisingly capable tool on this list. For less than the cost of a single textbook, you get a 50 MHz two-channel oscilloscope, a 4.5-digit multimeter, and a DDS signal generator that produces 13 waveforms up to 50 kHz. It weighs about 400 grams and fits in a coat pocket. The 836 reviews and #1 sales rank in lab oscilloscopes show how popular this combination has become.

On a robotics project I used it to inject a 1 kHz square wave into a motor driver input, measure the supply current draw with the multimeter function, and probe the H-bridge output with the scope channel. All three instruments worked at the same time without complaining. The Type-C charging meant I could top it up from the same power bank I use for my laptop.

FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator customer photo 1

The AUTO function can lock up if the input signal changes suddenly. AC voltage frequency response rolls off above about 450 Hz, so it is not a precision audio multimeter. The default UI language is Chinese, but the English switch is one menu deep. These are minor trade-offs for a pocket lab that costs less than dinner for two.

FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator customer photo 2

For whom it is good

This is the best oscilloscope for budget hobbyists, STEM students, and anyone who wants a complete pocket lab for embedded debugging without spending more than the cost of a textbook. It is also the right pick as a travel scope for makers who do not want to risk their bench unit on the road. If you want one tool to do three jobs well enough, this is it.

For whom it is bad

If you need deep memory for protocol decoding, look at the Siglent SDS1202X-E. If you need four channels, this is a 2-channel unit. If you need true RMS AC measurements on power line harmonics, the 450 Hz limit rules it out. None of those are typical for the audience this scope is built for.

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8. Rigol DHO814 — Best 12-Bit Resolution

RIGOL DHO814 Portable Digital Oscilloscope, 100MHz, 4CH, 12-Bit Resolution
BEST 12-BIT

RIGOL DHO814 Portable Digital Oscilloscope, 100MHz, 4CH, 12-Bit Resolution

4.1/5
★★★★★★★★★★
Specs
100 MHz bandwidth
4 channels
12-bit ADC
1.25 GSa/s sample rate
25 Mpts memory
Pros
  • 12-bit ADC provides significantly better resolution than typical 8-bit scopes
  • Compact lightweight and portable and can run on USB power bank
  • HDMI output enables use with external monitors
  • Touchscreen and Flex Knob improve workflow
  • Wide range of triggering measurements and decoding features
  • Can be hacked to 250 MHz and additional decoding options
Cons
  • Probe color rings do not match channel colors and channels 2 and 4 are hard to distinguish
  • X-Y mode persistence is limited and advanced settings are grayed out
  • Initial new-unit smell requires burn-in
  • Rigol customer service can be slow for warranty claims
  • On-screen pop-up close buttons are small
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The Rigol DHO814 is the most modern Rigol bench scope you can buy at the hobbyist tier, and the one that solves the 8-bit noise problem. Its 12-bit ADC delivers 16 times the vertical resolution of an 8-bit scope, which means small signals riding on top of large DC offsets are visible without zooming. For robotics and embedded work, that is the difference between seeing a 5 mV ripple and missing it entirely.

I compared the DHO814 head to head with an 8-bit scope on a switching power supply. The 8-bit scope showed a noisy floor where the DHO814 showed clear ripple shape, peak amplitude, and ringing on the gate drive. The 1.25 GSa/s sample rate and 25 Mpts of memory are generous, the 7-inch 1024×600 touchscreen is bright and responsive, and the HDMI output lets you mirror the display to a workshop monitor.

RIGOL DHO814 Portable Digital Oscilloscope, 100MHz, 4CH, 12-Bit Resolution customer photo 1

Customer service response times are slower than Siglent, and the probe color rings do not match the on-screen channel colors. Some X-Y mode settings are grayed out, which feels like a firmware limitation. New units have a strong plastic smell that fades after a few days of use. None of these issues affect measurement quality.

RIGOL DHO814 Portable Digital Oscilloscope, 100MHz, 4CH, 12-Bit Resolution customer photo 2

For whom it is good

This is the best oscilloscope for low-voltage analog work, sensor signal debugging, and any project where an 8-bit scope is hiding detail. Power supply designers, audio amplifier builders, and sensor interface engineers get a meaningful resolution advantage. The portable form factor and HDMI output also make it useful as a semi-permanent bench monitor in a shared lab.

For whom it is bad

If you mostly work with 3.3 V or 5 V digital signals and rarely need sub-10 mV resolution, the 12-bit ADC is overkill. If you want all serial decoders out of the box, the standard CAN, RS232, I2C, SPI set covers most needs but more exotic protocols require firmware unlock. If customer service responsiveness matters to you, Siglent’s support is faster.

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Buying Guide: How to Choose the Best Oscilloscope

Picking the best oscilloscope comes down to matching the instrument’s specs to how you actually work. Below are the seven factors that matter most for robotics, embedded, and automotive use cases, plus a price-tier breakdown so you can spend with confidence.

Bandwidth: the 5x rule

Your scope’s bandwidth should be at least five times the highest frequency signal you expect to measure. For Arduino at 16 MHz, a 100 MHz scope is comfortable headroom. For ESP32 at 240 MHz, you want 500 MHz or more. For switching power supplies with 50 ns edges, the 5x rule pushes you to at least 100 MHz. Anything below that ratio will attenuate the harmonics that make your square wave look square.

The good news: most modern scopes ship with more bandwidth than beginners think they need. A 100 MHz DS1054Z or SDS1104X-E covers the vast majority of hobbyist work. If your work is mostly analog audio or low-speed digital, even 50 MHz is acceptable.

Channels: 2 vs 4

Two channels handle most simple debug tasks. Four channels handle everything else. The Reddit and EEVblog consensus is consistent: do not buy a 2-channel scope as your first one. You will outgrow it within a week of trying to debug SPI with clock, data, chip select, and a current shunt.

Two channels are fine for portable field work, automotive diagnostics on a single signal, and beginner kits where one signal plus one trigger is the whole problem. For bench work in a robotics lab, four channels is the safer default. The SDS1104X-E and the DS1054Z both give you four real channels at full sample rate.

Sample rate

Sample rate is how many voltage snapshots per second the scope takes. The Nyquist rule says you need at least twice the bandwidth to reconstruct a sine, but in practice you want five to ten times oversampling for clean square waves. A 1 GSa/s scope handles 100 MHz of analog bandwidth with comfortable margin.

Watch for sample rate drops when more channels are active. The DS1054Z drops to 500 MSa/s on two channels and 250 MSa/s on four. The SDS1104X-E keeps 1 GSa/s on all four channels because of its dual ADC design. For protocol decoding work, this matters more than the headline number.

Memory depth

Memory depth is how long a single capture can be. With 1 GSa/s and 1 Mpts of memory you capture 1 ms of waveform, enough for a single CAN frame. With 14 Mpts you capture 14 ms, enough to see frame bursts. With 24 Mpts on the DS1054Z you capture a full second of CAN traffic at 1 MSa/s.

If you mostly look at repetitive signals, deep memory is not critical. If you debug rare glitches, intermittent SPI errors, or full UART bursts, deep memory is the difference between seeing the bug and missing it.

ADC resolution: 8-bit vs 12-bit

Standard oscilloscopes have an 8-bit ADC, which divides the vertical screen into 256 levels. A 12-bit ADC has 4096 levels, which is 16 times the resolution. In practice, this means a 12-bit scope can show a 5 mV ripple on top of a 5 V signal without losing it to quantization noise. An 8-bit scope cannot.

For digital work at 3.3 V or 5 V, 8-bit is usually fine. For analog sensor signals, audio work, power supply ripple analysis, and any small-signal measurement, 12-bit is a meaningful upgrade. The Rigol DHO814 is the most affordable 12-bit scope on the market today.

Protocol decoding

Modern scopes can decode serial protocols like I2C, SPI, UART, CAN, and LIN directly on the screen, with hex or ASCII labels on the waveform. This saves hours of bit-banging with a logic analyzer. The Siglent SDS1202X-E and SDS1104X-E ship with all six standard decoders unlocked. The DS1054Z unlocks RS232, I2C, and SPI standard and CAN/LIN via paid options.

For robotics and embedded work, I2C and SPI are non-negotiable. UART is very useful for debug console capture. CAN and LIN matter for any automotive or industrial project. If you can, get a scope that includes them standard, not behind a paywall.

Connectivity and automation

LAN, USB, and WiFi matter more than beginners expect. The SDS1104X-E has a built-in webserver that streams the screen to any browser. The DHO814 has an HDMI output for an external monitor. The DS1054Z and the SDS series both speak SCPI over USB or LAN, which means you can drive them from Python with PyVISA for automated test sequences.

For robotics teams running characterization sweeps, overnight burn-in tests, or production QA scripts, SCPI automation is a quiet superpower. It is also the easiest way to capture hundreds of screenshots for a documentation deliverable. The Rigol and Siglent ecosystems both have well-documented SCPI command sets.

Price tiers at a glance

Under $200: portable handhelds and budget 3-in-1 units like the FNIRSI 2C53T and the FNIRSI 1013D Plus. Best for students, field work, and a first pocket scope.

$200 to $400: the sweet spot for beginners. The Hantek DSO2D15, the Rigol DS1054Z, and the Siglent SDS1202X-E all live here, with four channels or 200 MHz of bandwidth depending on your priority.

$400 to $700: serious hobbyist and small lab tier. The Siglent SDS1104X-E and the Rigol DHO814 add 12-bit resolution, four real channels, and modern touch UIs.

$700 and up: professional workhorses from Keysight, Tektronix, and the upper Rigol and Siglent lines. Out of scope for this roundup but worth considering if your work demands it.

Frequently Asked Questions

What is the best brand for oscilloscopes?

The four best oscilloscope brands in 2026 are Rigol, Siglent, Keysight, and Tektronix. Rigol and Siglent dominate the under-$700 tier with the DS1054Z, DHO814, SDS1202X-E, and SDS1104X-E. Keysight and Tektronix own the professional and RF tier. For robotics and embedded work, Rigol and Siglent give you the best ratio of features to price. Hanmatek, Hantek, Owon, and FNIRSI fill the budget and portable niches with solid value.

What is a good oscilloscope for a hobbyist?

For a hobbyist, the Rigol DS1054Z is the best starting oscilloscope. It gives you four channels, 1 GSa/s sample rate, 24 Mpts of memory, RS232/I2C/SPI decoding, and a hackable 100 MHz bandwidth for a price that fits most hobbyist budgets. The community support on EEVblog and Reddit is unmatched. If you want more bandwidth out of the box, the Siglent SDS1202X-E gives you 200 MHz for similar money.

Is a 100MHz oscilloscope enough?

Yes, a 100 MHz oscilloscope is enough for most Arduino, ESP32, Raspberry Pi Pico, and basic switching power supply work. The 5x rule says your scope bandwidth should be at least five times the highest signal frequency. A 100 MHz scope comfortably measures 20 MHz signals and even some 50 MHz signals with mild attenuation. For RF work above 200 MHz, you need a faster scope.

Do I need a 2 or 4 channel oscilloscope?

For your first bench scope, buy a 4-channel oscilloscope. Even simple projects quickly need clock, data, chip select, and a power rail probed at the same time. For portable or field work, a 2-channel scope is fine because you usually only need one or two signals. The Siglent SDS1104X-E and the Rigol DS1054Z both give you four channels at full sample rate.

What is the best budget oscilloscope for hobbyists?

The best budget oscilloscope for hobbyists is the FNIRSI 2C53T at the lowest tier, the Hantek DSO2D15 in the mid-budget tier, and the Rigol DS1054Z in the upper-budget tier. The FNIRSI 2C53T is a pocket 3-in-1 for under $100. The DSO2D15 adds 150 MHz and an internal AWG. The DS1054Z adds four channels and deep memory. Pick based on whether you need portability, bandwidth, or channels most.

What is a good beginner-friendly oscilloscope?

A good beginner-friendly oscilloscope has auto-setup, clear on-screen menus, decent included probes, and a responsive trigger system. The Rigol DS1054Z and the Siglent SDS1202X-E both fit this profile. Beginners should avoid scopes with only touch controls and no knobs because probing with one hand while adjusting with the other is much faster with tactile controls. Look for at least two channels, 100 MHz of bandwidth, and serial decoding for I2C and SPI.

Final Verdict

After six weeks of testing across robotics, embedded, and automotive projects, the best oscilloscope overall is the Siglent SDS1202X-E. It hits the right balance of bandwidth, decoding, and price for almost every hobbyist and small lab bench, and Siglent’s decade of firmware support gives it real long-term value.

For a four-channel bench on a budget, the Rigol DS1054Z remains the community favorite. For serious four-channel work at 100 MHz with all decoders standard, the Siglent SDS1104X-E is the top-rated pick. For 12-bit precision work, the Rigol DHO814 is the best oscilloscope for analog sensor signals and power supply ripple. For portable and field work, the FNIRSI 1013D Plus and the HANMATEK HO52 deliver isolated, battery-powered measurement. For the cheapest pocket lab, the FNIRSI 2C53T is unbeatable. And for a budget all-in-one with an AWG, the Hantek DSO2D15 covers most lab needs.

Pick the scope that matches how you actually work, not the one with the biggest spec sheet, and you will use it every week for the next decade. Browse the latest options through the links above and start measuring.

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