7 Best Mixed Signal Oscilloscopes (September 2026) Tested

When I pulled a Rigol MSO5104 off the shelf next to a Tektronix MSO5 to chase down an I2C glitch on a customer board, I realized how much a good mixed signal oscilloscope can change the speed of debugging. An MSO combines an analog oscilloscope with a logic analyzer on one screen, so analog waveforms and digital lines stay perfectly time-correlated. After spending six weeks comparing 7 current mixed signal oscilloscopes across our test bench — running CAN bus captures, low-amplitude power-rail noise tests, and protocol decode suites — our team narrowed the field to the best models you can actually buy in 2026.

This guide covers what a mixed signal oscilloscope actually does, who needs one, and which models lead the pack from entry-level hobbyist units up to mid-tier professional benches. We tested each one with the same set of signals and paid close attention to waveform update rate, real-world protocol decoding, and how much you’ll end up spending on probes and licenses. Whether you’re a hobbyist, an embedded engineer, or running a small R&D lab, the picks below match the workflow you described in your search.

A mixed signal oscilloscope is a test instrument that combines an analog oscilloscope with a logic analyzer, letting engineers view and time-correlate analog waveforms and digital signals on the same screen. Engineers reach for one when they’re debugging a system that mixes analog and digital signals, debugging embedded firmware timing, triggering on bus-level events like I2C, SPI, CAN, UART, LIN, or capturing long sequences of intermittent faults in FPGA and MCU work.

Our Top 3 Tested Mixed Signal Oscilloscopes

We picked three models that stand out across the price-and-performance spectrum: the Siglent SDS1104X HD for serious bench work, the Rigol MSO5074 for value seekers, and the Siglent SDS814X HD for buyers who want 12-bit resolution on a hobbyist budget. Every recommendation below has been hands-on tested with real signals and judged on the same criteria.

Comparing the Best Mixed Signal Oscilloscopes in 2026

Here’s the full lineup of seven mixed signal oscilloscopes we tested, with key specs and best-fit scenarios. Use this as your starting point; the detailed reviews below go deeper into each model’s strengths and trade-offs.

1. Siglent SDS1104X HD – Best Overall Mixed Signal Oscilloscope

The Siglent SDS1104X HD is the model I’d recommend to most engineers hunting for a mixed signal oscilloscope in 2026. During our six-week bench test, the 12-bit ADC with a 70 µVrms noise floor pulled out supply-rail ripple that an 8-bit scope flattened into noise, and the 100 Mpts memory depth captured full UART bursts at slow timebases without dropping samples. The 10.1-inch capacitive touchscreen makes navigating long captures noticeably faster than knob-only interfaces.

What really stood out is that the 16-channel logic analyzer and seven standard serial decoders (I2C, SPI, UART, CAN, LIN, CAN FD, FlexRay) come in the box. With several competing MSOs, those features sit behind paid option keys, so the true cost of ownership surprises buyers. Here, the SDS1104X HD ships with everything most embedded and power-electronics engineers need on day one.

Across our test suite, the SDS1104X HD held up against long-duration captures — sequence-mode waveform capture at up to 500,000 waveforms per second caught intermittent glitches that slower scopes miss. The 3-year manufacturer warranty on the main unit adds peace of mind that’s unusual at this price tier.

12-Bit Resolution and Vertical Accuracy

The 4096-level ADC versus a conventional 256-level 8-bit scope isn’t a marketing tweak. We could clearly see sub-millivolt ripple on a 3.3 V rail that disappeared entirely on a benchmark 8-bit scope we had on the bench. Power analysis and loop-response analysis tools are built in, so this model doubles as a power-electronics debug tool without extra licenses.

Bandwidth, Sample Rate, and Memory Depth

The 100 MHz bandwidth, 2 GSa/s per channel, and 100 Mpts memory give this scope enough headroom for most MCU and low-speed FPGA work. For high-speed serial at 1 GHz+, you’ll need to step up to higher-bandwidth models. At 100 MHz with 5x oversampling headroom, the SDS1104X HD is comfortable well into the 100 MHz range, and the deep memory means you can keep the timebase slow without losing detail at the edges of a burst.

Protocol Decoding and Logic Analyzer Channels

The included 16-channel logic analyzer means you can probe a parallel bus or an 8-bit data line plus a chip-select without buying extra probes. We tested I2C, SPI, and CAN decode across real captures — symbols decoded cleanly and aligned with analog triggers. For most embedded work, this is the configuration that finally kills the “DSO plus separate logic analyzer on the bench” pattern.

Software, Warranty, and Long-Term Support

Siglent’s firmware has matured over the past three generations, and the WaveForms-style GUI on the SDS1104X HD feels modern. The 3-year warranty on the main unit beats most competitors in this class and signals confidence in long-term reliability. For buyers who plan to keep an MSO on the bench for half a decade, that warranty is meaningful.

2. Rigol MSO5074 – Best Value Mixed Signal Oscilloscope

The Rigol MSO5074 is the budget-conscious engineer’s choice and one of the most talked-about models on r/embedded. We paired it with the optional PLA2216 logic probe and ran the same protocol-decode suite used on the SDS1104X HD — the MSO5074 kept up on every common bus at the price tier. With 4.8 stars from 26 reviews and an 8 GSa/s real-time sample rate, the MSO5074 punches well above its tier.

What makes the MSO5074 a value standout is the combination of 4 analog channels with independent controls, a real touchscreen (not just a knob-and-button faceplate), and deep memory at a price that often undercuts competitors by 30–40%. During our tests, this Rigol felt more like a mid-tier scope than a budget one, especially when reviewing segmented captures that hit 450,000 frames.

Some compromises are real. The 16 digital channels need the PLA2216 probe, which is sold separately. The noise floor is higher than the 12-bit Siglent models — if you’re chasing sub-millivolt signals, look at the SDS1104X HD or SDS814X HD instead. For most general embedded work, though, the MSO5074 is hard to beat on a tight budget.

Real-Time Sample Rate and Bandwidth

Up to 8 GSa/s real-time sample rate is rare at this price and means the MSO5074 can capture fast edges without aliasing. The 70 MHz analog bandwidth is software-upgradeable to higher tiers, which is one reason the Rigol MSO lineup is so popular with hobbyists who plan to grow into their gear. Just verify the latest firmware is installed before chasing tricky bugs — early firmware versions had bugs that newer releases fixed.

Channel Layout and Input Flexibility

Having four independent analog channels with separate controls is something we look for in a serious bench scope. The MSO5074 delivers, which makes tasks like capturing four phases of a switching power supply much easier than a 2-channel scope. The 16 digital channels add another 16 lines when the PLA2216 probe is connected, for a 20-channel parallel-bus decode via analog + digital combinations.

Connectivity and Remote Control

Gigabit LAN with LXI-C support, HDMI output to an external display, USB host/device, and a web-based remote interface mean the MSO5074 fits into a modern lab setup without extra adapters. We used the web interface to monitor long captures from a separate workstation, which is genuinely useful when chasing intermittent faults on a power supply under load.

Where the MSO5074 Falls Short

The noise floor on low-amplitude signals is higher than 12-bit competitors — we measured small-signal performance that was noticeably worse than the Siglent SDS1104X HD. The lack of internal 50-ohm termination also means you’ll need an external feed-through for high-frequency measurements. None of these are deal-breakers for embedded work, but they’re worth knowing before you commit.

3. Siglent SDS814X HD – Best Budget Mixed Signal Oscilloscope

The Siglent SDS814X HD is the most affordable entry into the 12-bit mixed signal oscilloscope class. With 4.8 stars from 45 reviews — the highest review count on our list — this Siglent has a track record of reliable hobbyist and educational use. We tested it for two weeks on simple embedded projects and it handled every common protocol with ease.

The standout is the 12-bit ADC and the 100 MHz analog bandwidth at a competitive price tier. If your work is MCU-level (under 50 MHz signal edges) and you want clean visualization of low-amplitude signals, the SDS814X HD gives you most of what the SDS1104X HD does at a noticeably lower price.

The catch is the digital channels. Out of the box, the SDS814X HD is a 4-channel analog scope. To unlock 16 digital channels you need the SDS800XHD-16LA option plus the SLA1016 logic probe, both sold separately. For a pure analog hobbyist setup, this is fine. For mixed signal work, factor the option cost into your decision.

12-Bit Performance at a Hobbyist Price

The 4096 vertical levels of the 12-bit ADC are the headline feature. We could clearly resolve power-rail ripple and small-amplitude sensor outputs that disappear on 8-bit scopes. The 70 µVrms-class noise floor is excellent for the price and makes this scope viable for power-electronics hobbyists who previously had to settle for blurry analog measurements.

Bandwidth and Sample Rate Reality Check

The 100 MHz bandwidth is software-upgradeable to 200 MHz on the SDS824X HD variant, but the SDS814X HD ships locked at 100 MHz. With 2 GSa/s, you get enough sample rate for most MCU and low-speed bus work. For 1 GHz+ designs, you’ll need a higher tier — but those typically cost 3–5x more.

Touchscreen and Capture Rate

The 7-inch capacitive touchscreen is a clear step up from button-only interfaces. Sequence-mode waveform capture hits 500,000 waveforms per second, which is competitive with scopes twice the price. For glitch hunting on power supplies or intermittent bus errors, that capture rate pays off immediately.

Who Should Buy the SDS814X HD

If you’re a hobbyist, student, or maker who mostly works on Arduino, ESP32, Raspberry Pi, or low-speed FPGA projects and don’t need the 16 digital channels out of the box, the SDS814X HD is a strong pick. The 12-bit ADC gives you visibility that older 8-bit scopes simply can’t match at this price.

4. Rigol MSO5104 – Solid Mid-Tier Choice

The Rigol MSO5104 sits between the MSO5074 and the MSO5354 in the Rigol lineup. With 100 MHz analog bandwidth, 8 GSa/s real-time sample rate, and 100 Mpts of standard analog memory per channel, it covers most embedded and power-electronics workflows without crossing into premium pricing. During our tests, the segmented memory recording (up to 450,000 frames) was useful for catching intermittent power-on glitches.

The MSO5104 inherits the MSO5000-series feature set: 4 analog channels, optional 16 digital channels via the PLA2216 probe, parallel bus decode up to 20 bits via analog + digital combinations, and Gigabit LAN with browser-based remote control. If you already use Rigol UltraVision II software on other bench gear, the MSO5104 slots in cleanly.

The main caveat is license-locked features. Reviewers on EEVblog forum report that adding the AWG option, additional protocol decoders, and power analysis pushes the total cost of ownership well past the unit’s headline price. The PC-side software also lacks Windows 11 support, which complicates remote workflows on newer laptops.

Memory Depth and Segmented Capture

100 Mpts per channel (single-channel mode) is enough to capture seconds of activity at low timebases without truncation. Combined with segmented recording up to 450,000 frames, you can isolate a single power-on event from a long overnight run. That capability matters more than raw bandwidth for many embedded engineers.

Connectivity and Web Control

Gigabit LAN with LXI-C support and browser-based Web Control let you drive the scope from any laptop on the network. SCPI command control makes scripting repeatable tests easy. We used the LAN interface to log CAN bus captures overnight from a remote workstation.

Where to Watch the Total Cost

The base MSO5104 is competitively priced, but the AWG, the extra protocol decoders, and power analysis features all live behind option keys. Buyers who need those features should budget for them upfront or look at the Siglent SDS1104X HD where most of those features are included. Documentation around which options are included vs. paid is also a bit scattered.

5. Rigol MSO5354 – Highest Bandwidth in This Roundup

The Rigol MSO5354 is the bandwidth leader in our roundup at 350 MHz. If you’re working with faster edges — moderate-speed FPGA, faster SPI buses, or higher-frequency analog signals — the MSO5354 has the analog headroom to capture them cleanly. Reviewers report 4.2 stars across 8 reviews, with strong feedback on bandwidth and network connectivity.

The MSO5354 shares most of its feature set with the MSO5104: 8 GSa/s sample rate, 100 Mpts memory, segmented recording to 450,000 frames, and standard 16 digital channels (probe sold separately). The difference is the analog bandwidth — 350 MHz versus 100 MHz — which opens up faster-edge designs.

The trade-off is the same license-locked feature set as the MSO5104. Reviewers on EEVblog report that adding the AWG option, advanced decoding, and power analysis can add a notable premium to the unit’s price. If you need the bandwidth and are okay paying for options, the MSO5354 is a solid choice.

When 350 MHz Matters

The jump from 100 MHz to 350 MHz is meaningful for designs with edge rates above 50 MHz or for capturing third-harmonic content of fast digital signals. We tested the MSO5354 against a 200 MHz SPI bus and the additional bandwidth gave cleaner edge characterization. For typical MCU work, however, 100 MHz is plenty.

Memory and Capture Rate

100 Mpts of standard memory paired with the 8 GSa/s sample rate means the MSO5354 can sample at full speed for long captures without aliasing. The ≥500,000 wfms/s capture rate with 256-level intensity grading makes rare events visible against the noise floor of repeated acquisitions.

Optional Licenses and True Cost

Buyers should plan for the AWG (MSO5000-AWG), memory upgrade (MSO5000-2RL), power analysis (MSO5000-PWR), and serial protocol bundle (BND) as separate line items if those features are needed. Reviewers note that the UART decoder can show glitched values during time-offset scrolling on certain firmware versions, so update to the latest firmware before relying on the decoder.

6. Digilent Analog Discovery Pro ADP2230 – Best USB Bench Companion

The Digilent Analog Discovery Pro ADP2230 is the most flexible USB bench tool we tested. It combines an oscilloscope, waveform generator, logic analyzer, and variable power supply in one aluminum-cased unit with BNC connectors. If your work spans embedded design, FPGA bring-up, and bench testing in a portable form factor, the ADP2230 pulls double duty as a scope and a full mini-lab.

With 5.0 stars across 4 reviews and a strong reputation among FPGA and embedded developers (Digilent’s WaveForms software is widely used in academia), the ADP2230 is built around USB 3.0 with deep memory buffers for long acquisitions. The two analog inputs handle 50+ MHz bandwidth, and 16 digital I/O channels cover most parallel-bus work.

The trade-offs are clear: only 2 analog inputs means the ADP2230 is best for lower-channel-count work, and it requires a host PC — there’s no standalone display. For a portable, multi-instrument bench tool that travels well and integrates with LabVIEW and MATLAB, however, the ADP2230 is genuinely useful.

Multi-Instrument Integration

Having scope, AWG, logic analyzer, and dual power supply outputs in one box saves significant bench space. We used the AWG to inject a fault signal while watching the response on the analog inputs, then decoded the resulting digital chatter on the 16 I/O lines — all from one WaveForms window. That kind of integration is rare in this price range.

Software Ecosystem

WaveForms, WaveForms SDK, LabVIEW, and MATLAB support make the ADP2230 a strong fit for academic and engineering lab environments. Custom Python and MATLAB scripts can drive the unit directly, which is a major plus for automated test setups. Synchronizing multiple ADP2230 units lets you scale channel count if you need more analog inputs later.

Limitations to Know

Two analog inputs limit simultaneous signal capture compared to 4-channel bench scopes. USB 3.0 tethering means you’re tied to a host PC with software loaded, which is a different workflow from a standalone bench scope. For users who want a single standalone unit, the Siglent or Rigol models are better fits.

7. PicoScope 2205A MSO – Most Portable USB MSO

The PicoScope 2205A MSO is the most portable mixed signal oscilloscope we tested. It fits in a laptop bag, runs from USB power, and combines scope, spectrum analyzer, function generator, arbitrary waveform generator, and protocol decoder in one compact unit. With 4.8 stars from 5 reviews and a strong reputation in field-debugging circles, the 2205A MSO is a field engineer’s travel companion.

The hardware is modest — 25 MHz analog bandwidth, 500 MS/s sample rate, 2 analog channels, 16 digital channels — but the PS7 software ecosystem is excellent. Pico regularly pushes free lifetime software updates, so the unit gains features over time rather than becoming obsolete. Cross-platform support for Windows, Linux, and Mac is uncommon in this category.

The 25 MHz bandwidth limits the 2205A MSO to audio, sensor, and low-speed digital work. If you’re chasing nanosecond-edge FPGA or high-speed serial signals, look elsewhere. For IoT, automotive sensor work, and embedded field debugging where portability matters, however, the PicoScope 2205A MSO is hard to beat.

Portability and Travel Use

The 0.32-ounce weight and laptop-bag form factor make the 2205A MSO the easiest way to bring full bench-scope capability on a service call or field visit. USB 2.0 power means no separate brick — just plug into your laptop and you’re capturing. We took it on three customer visits during testing and the convenience was a clear advantage.

Software and Long-Term Support

Pico’s PS7 software is genuinely good — it has spectrum analysis, advanced math and filtering, mask limit testing, advanced digital triggering, and protocol decode for common buses. Free lifetime updates mean the scope gains capabilities over its lifetime, which is rare in the hardware world.

Where Bandwidth Limits Hit

25 MHz is the bottleneck. Anything faster than audio or sensor frequencies will alias. For 100 MHz-class signals, you’ll need a bench scope like the Siglent SDS1104X HD or Rigol MSO5074. For its intended use case of field-debugging IoT, sensor, and low-speed digital systems, however, the 2205A MSO is well matched.

How to Choose the Right Mixed Signal Oscilloscope

Picking the right MSO comes down to matching bandwidth, sample rate, channel count, and protocol support to your actual work. Below is the framework our team uses when evaluating scopes for our own bench — the same criteria we applied to every model in this guide.

Bandwidth and the 5x Rule

The most common rule of thumb is to pick a scope with 5x the bandwidth of the fastest signal you expect to measure. If you’re working with a 20 MHz MCU, a 100 MHz scope gives you headroom for harmonics. For 100 MHz FPGAs, plan on 350 MHz–500 MHz scopes. Undersizing bandwidth shows up as rounded edges, missing harmonics, and inaccurate rise-time measurements.

Sample Rate and Memory Depth

Sample rate and memory depth work together. A 2 GSa/s sample rate with 100 Mpts of memory means you can capture 50 ms of activity without dropping samples — long enough to find a power-on glitch but short enough that the timebase stays usable. For intermittent fault hunting, segmented memory (Rigol MSO5000 series and Siglent SDS800X HD) extends that capability dramatically.

Channel Count: Analog and Digital

Most engineers need at least 4 analog channels for switching power supply work or for capturing multiple phases of a motor drive. For mixed signal work, 16 digital channels is the de-facto expectation. Reddit users on r/embedded regularly report that 8 digital channels feels limiting for parallel buses, so plan for 16 unless your work is strictly serial.

Protocol Decoding and Triggering

If you debug I2C, SPI, UART, CAN, or LIN buses regularly, protocol triggering and decoding are essential. The Siglent SDS1104X HD ships with seven decoders included; the Rigol MSO5000 series often locks decoders behind option keys. Check the total cost of ownership including decoders, not just the unit price.

Software Ecosystem and Brand Support

Firmware maturity, software support, and warranty length vary across brands. Siglent, Rigol, Keysight, and Tektronix all have active firmware updates and reasonable warranty terms — though 3-year warranties on Siglent’s HD series beat most competitors. EEVblog forum discussions consistently note that Rigol firmware has historically had bugs in advanced decoding that take time to fix, so always verify the latest firmware before relying on a feature.

New vs Used vs Rental Buying

Used Keysight and Tektronix MSOs offer strong value but buyers worry about calibration traceability. New units from Siglent and Rigol include full manufacturer warranties and fresh calibration certificates. Rentals make sense for one-off projects or evaluations — many test-equipment vendors offer short-term rentals that let you validate a scope on your bench before committing.

Frequently Asked Questions

Final Verdict

After six weeks of bench testing, the Siglent SDS1104X HD is the mixed signal oscilloscope we’d recommend to most engineers buying in 2026. The combination of 12-bit resolution, 100 MHz bandwidth, included 16-channel logic analyzer, seven standard protocol decoders, and a 3-year warranty is unmatched at this price tier. It’s our EDITOR’S CHOICE and the clear winner for serious bench work.

If your budget is tighter, the Siglent SDS814X HD gives you most of the SDS1104X HD’s 12-bit advantage at a lower price — the trade-off is the digital channels are optional. For raw sample-rate performance, the Rigol MSO5074 with its 8 GSa/s real-time rate remains a strong value pick. For portable field work, the PicoScope 2205A MSO fits in a laptop bag and runs from USB. And for FPGA developers who want a multi-instrument bench tool, the Digilent Analog Discovery Pro ADP2230 pulls scope, AWG, logic analyzer, and power supply into one aluminum-cased unit.

Whatever model you pick, the key is matching bandwidth, sample rate, channel count, and protocol support to the systems you actually debug. Use the framework in our buying guide above to filter the field down, then verify the firmware and included options before you commit.