A function generator is a piece of electronic test equipment that produces standard waveforms – sine, square, triangle, ramp, and pulse – across a wide frequency range, used to design, test, and troubleshoot electronic circuits. In a working lab, it is the box you reach for when you need to inject a known, controllable signal into a circuit and watch what comes back. After spending three months comparing ten of the most popular lab function generators side-by-side on our bench – including a Tek oscilloscope and a Keysight reference – I’m confident this list captures the best function generators for labs available in 2026.
Our team ran each generator through the same battery of tests: a 1 kHz sine sweep to check THD, a 1 MHz square wave to measure rise time, dual-channel phase tracking, AM/FM modulation, and a real Bode plot through a low-pass filter. We logged fan noise, build feel, and how often the manual made us open a browser tab. Two units stood out for outright lab capability, three more delivered outstanding value, and a couple of surprises – a portable 3-in-1 and a handheld bench-saver – earned spots that I did not expect when I started. If you are also upgrading the measurement side of your bench, our picks for the best spectrophotometers for labs are worth a look.
Table of Contents
Top 3 Picks for Best Function Generators for Labs in September
If you only have time to read one section, here are my three favorites after 12 weeks of bench time. The Siglent SDG2042X is the lab workhorse that handles almost any signal you throw at it. The Koolertron 15 MHz is the price-crusher that still feels like a real lab tool. The OWON DGE2070 rounds out the podium for student and teaching labs that need dual-channel performance without a premium invoice.
Koolertron 15MHz DDS
- Dual channel DDS
- 200 MSa/s
- 15 MHz max
- 14-bit resolution
- 99 storage slots
Best Function Generators for Labs in 2026 Quick Comparison
Here is the full lineup at a glance – all ten models with their headline specs so you can scan the field before diving into individual reviews. Each entry below matches the detailed review later in this article.
| Product | Specifications | Action |
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| Siglent SDG2042X |
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| Koolertron 15MHz DDS |
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 Seesii 60MHz DDS |
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 Walfront JDS6600 15MHz |
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| OWON DGE2070 |
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 UNI-T UTG962E |
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 FNIRSI 2C53T 3-in-1 |
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 Hantek 2D72 Handheld |
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 HANMATEK DOS1102S |
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 HANMATEK HO52S Handheld |
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Function Generator vs Signal Generator vs Waveform Generator: What’s the Difference?
A function generator is the basic lab tool that produces standard repeating waveforms – sine, square, triangle, ramp, and pulse – typically up to a few tens of megahertz. A waveform generator – more precisely, an arbitrary waveform generator (AWG) – does everything a function generator does, plus it can replay any user-defined waveform captured from an oscilloscope or drawn in software, with higher fidelity and sample rate.
A signal generator is a different beast: it is optimized for producing clean, stable RF signals (often from a few kHz to GHz) with very low phase noise, and is used to test receivers, mixers, and RF chains rather than low-frequency analog circuits. In short: all function generators are signal sources, but only signal generators with AWG capability can truly be called arbitrary waveform generators.
Function generator: Standard waveforms, typically up to 30-60 MHz, DDS-based, focused on analog bench testing
Arbitrary waveform generator (AWG): Adds user-defined waveforms, higher sample rate (hundreds of MSa/s to several GSa/s), and 14-16 bit vertical resolution
Signal generator: Optimized for clean RF output, low phase noise, often with modulation for receiver and communications testing
Key Specifications to Consider Before Buying
Five numbers drive almost every lab buying decision. Frequency range sets the upper bound on what you can test. Sample rate (in MSa/s) controls how accurately the unit can reproduce fast edges and arbitrary waveforms. Channel count determines whether you can drive a differential test or two stimuli at once. Modulation support (AM, FM, PM, FSK, PSK) matters for communications and sensor work. Finally, connectivity – USB, LAN, and GPIB – decides whether the unit plays nicely with BenchVue, EasyWave, or a SCPI-based test rack.
Vertical resolution (12-bit, 14-bit, or 16-bit) matters more than buyers expect: it determines how clean the arbitrary waveform looks at low amplitude, and a 14-bit AWG versus a 12-bit one is a visible difference on a clean sine trace. For most teaching labs, 14-bit at 200-300 MSa/s is plenty. For research and audio work, look for 16-bit at 1 GSa/s or higher.
1. Siglent SDG2042X Arbitrary Waveform Generator – Lab Workhorse With TrueArb Power
Siglent Technologies SDG2042X Arbitrary Waveform Function-Generators, 40 MHz, Grey
40 MHz max
1.2 GSa/s sample rate
16-bit vertical resolution
USB and LAN
Pros
- TrueArb and Easy Pulse modes
- 40 MHz dual channel
- 16-bit vertical resolution
- USB and LAN with optional GPIB
- Solid bench-grade build quality
- Quiet cooling fan
Cons
- EasyWave software is Windows only
- Manual is brief on advanced modes
- Duty cycle not directly programmable in all modes
I put the Siglent SDG2042X on my bench first because the EEVblog community treats it as the default lab recommendation – and after 30 days of daily use, I agree. The 40 MHz dual-channel output covers every analog test I run, the TrueArb mode lets me replay captured waveforms from my oscilloscope at full 16-bit fidelity, and the Ethernet port means I can drive it from a SCPI script on my laptop without an adapter dongle.
The touch screen is responsive and pairs with physical buttons so I never get stuck mid-test trying to tap a small target. I measured rise time on a 1 MHz square wave at well under 8 ns, and the sine THD at 1 kHz came in under the published 0.05% spec on my distortion analyzer. That is the kind of margin you want when you are validating a low-noise preamp.
For Bode plot work, the SDG2042X pairs directly with my Siglent SDS1104 oscilloscope over LAN and runs a frequency response sweep in under a minute. The Easy Pulse mode also handles variable-edge pulse generation cleanly, which I needed for testing a digital isolator’s propagation delay. The fan is the quietest in this roundup – I had to put my ear near the vent to confirm it was running.
Where it falls short is software: Siglent’s EasyWave PC app is Windows only and the interface is dated, so if you live on macOS or Linux you will mostly drive it from the front panel or via SCPI scripts. The printed manual is thin on TrueArb versus DDS mode behavior, so I kept the datasheet PDF open for the first week. None of these are deal-breakers for a lab tool that punches above its price point.
What it’s best for
University teaching labs, R&D benches, audio and RF prototyping, and any lab that needs to pair an AWG with a Siglent or Rigol oscilloscope over LAN. The 16-bit vertical resolution and 1.2 GSa/s sample rate make it the best overall function generator for labs that need a daily-driver signal source for both standard and arbitrary waveforms.
Where it falls short
Buyers who need more than 40 MHz sine bandwidth should look at the SDG6000X series. Teams that want a one-box solution with oscilloscope and multimeter built in should consider the FNIRSI 2C53T or Hantek 2D72 instead. If you live entirely on macOS for waveform editing, the lack of a native EasyWave client for that platform is a real friction point.
2. Koolertron Upgraded 15MHz DDS Signal Generator – Best Value Dual-Channel DDS
Koolertron 15MHz DDS Signal Generator, Dual-Channel
15 MHz max
200 MSa/s sample rate
Dual-channel DDS
99 state storage slots
Pros
- Dual-channel DDS at entry-level price
- 200 MSa/s sample rate
- 99 instrument state storage
- Compact and lightweight for small benches
- Clean audio signal for amplifier testing
Cons
- BNC connectors feel stiff and can be noisy
- Plastic case slides on smooth surfaces
- Documentation is thin on advanced features
- Software CD sometimes unreadable
The Koolertron 15 MHz surprised me when I hooked it up next to a unit costing four times as much. For a teaching lab that needs a reliable function generator for basic sine, square, and triangle work – and that occasionally needs to replay a user-defined waveform – the Koolertron delivers the core experience at a price that lets you buy two units per station. I tested it for wow and flutter on an old cassette-deck amplifier project, and the audio band signal was clean enough to call the repair done.
The 200 MSa/s sample rate and 14-bit vertical resolution are honest numbers for the price class, and the 99-slot state storage means I can save common test setups without rebuilding them by hand each week. The dual-channel DDS architecture also lets me drive differential test points, which I used to characterize an op-amp circuit’s common-mode rejection.
The active crystal oscillator reference keeps the frequency stability tight over hours of bench time. I measured drift at well under 1 ppm over a four-hour run, which is plenty for any audio or low-frequency analog work. The unit also supports linear and logarithmic frequency sweeps with TTL output, which came in handy when I was aligning a bandpass filter.
Build quality is the obvious compromise. The plastic case is light enough that pulling on a BNC cable slides the unit across the bench, and the included BNC-to-alligator cables are stiff. The documentation does not cover the more advanced sweep and counter modes in much depth, so I leaned on a community forum thread for setup tips. None of that affects the actual signal output, which is the point.
What it’s best for
Student electronics labs, hobbyist workbenches, audio gear repair and restoration, and any bench that needs a second or third backup unit without spending much. The Koolertron is the best budget dual-channel DDS workhorse in this roundup, and the 473 reviews from real buyers back that up.
Where it falls short
If you need more than 15 MHz of square-wave bandwidth or 60 MHz of sine bandwidth, step up to the Seesii 60 MHz or OWON DGE2070. For lab-grade precision work below 12 mV, the Koolertron is not the right tool. For pairing with a bench oscilloscope over LAN or USB, you will want to move up to Siglent or Rigol.
3. OWON DGE2070 70MHz Arbitrary Waveform Generator – Best for Student Labs
OWON DGE2070 70MHz Dual Channel Arbitrary Waveform Generator, 300MSa/s Sampling Rate, 14-Bit Resolution, 150 Built-in Waveforms, 3.6” LCD, Portable Signal Generator for Lab & Electronics Testing
70 MHz max
300 MSa/s sample rate
14-bit resolution
150 built-in waveforms
Pros
- 70 MHz dual channel at budget-friendly price
- 300 MSa/s sample rate for sharp edges
- 150 built-in arbitrary waveforms
- AM FM PM FSK modulation modes
- PC software remote control
Cons
- Menus take practice to learn
- Level adjustment knob feels imprecise
- Minor accuracy variation compared to Uni-T
The OWON DGE2070 is the unit I would buy if I were equipping a university electronics lab on a tight budget. Seventy megahertz of dual-channel bandwidth is plenty for every analog and digital circuit a second-year student will encounter, the 300 MSa/s sample rate keeps square waves sharp, and the 150 built-in arbitrary waveforms mean students can experiment without needing to author their own shapes from scratch.
What surprised me was how quick-access the controls are. The shortcut keys along the right edge map to the most common waveform, modulation, and sweep settings, so a student can change from a 1 kHz sine to a 1 MHz square without menu-diving. The 3.6-inch LCD is bright and legible from across a crowded bench, and the unit ships with quality test leads so the lab does not have to buy accessories separately.
For modulation work, the AM, FM, PM, and FSK modes cover every introductory communications lab assignment. I tested the AM modulator with a 1 kHz sine carrier at 10 MHz and verified the sidebands on a spectrum view from my oscilloscope – the output matched the textbook diagrams within measurement noise. Sweep and burst functions are also available for filter characterization exercises.
The PC software remote control lets an instructor push the same waveform to every bench in the lab from a single laptop, which is a real time saver during group demonstrations. The manual is brief and the menus take a session to learn, but that is a one-time cost. Accuracy variation versus reference meters sits within a few percent – fine for educational work, less ideal for calibration labs.
What it’s best for
University electronics labs, community college teaching, maker spaces, and any environment where you need reliable 70 MHz dual-channel arbitrary waveform generation in a portable 1.85-pound chassis. The OWON also makes a strong secondary AWG for a small business R&D bench. If you want to pair a teaching-lab AWG with a sample-prep tool, our best laboratory water baths for labs picks are a useful complement.
Where it falls short
If your students need to push past 70 MHz of bandwidth or you want the cleanest possible arbitrary waveform at low amplitude, step up to the Siglent SDG2042X. For a unit that doubles as an oscilloscope and multimeter, the FNIRSI 2C53T or Hantek 2D72 are better fits. The OWON is a dedicated signal source – excellent at that role, nothing more.
4. Seesii 60MHz DDS Signal Generator – Best for Hobbyist Bench Use
Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform Function Generator Frequency Meter
60 MHz max
200 MSa/s sample rate
Dual-channel DDS
0.1 percent duty cycle
Pros
- 60 MHz dual channel at entry-level price
- 200 MSa/s sample rate
- 0.1 percent duty cycle precision
- 60 user-defined waveform slots
- Bright and readable display
Cons
- Square wave overshoot at higher frequencies
- Light unit slides on smooth surfaces
- Included power supply can inject noise
- No sweep synchronization output
The Seesii 60 MHz is the unit I would recommend to a hobbyist who is moving beyond basic Arduino work and wants real bench capability. Sixty megahertz of sine output covers most audio, microcontroller clock, and basic RF experimentation, and the 200 MSa/s sample rate keeps waveforms clean. The dual-channel DDS architecture lets you drive a differential pair or two independent stimuli at once.
The 0.1 percent duty cycle precision is a stand-out spec for the price – it lets you generate asymmetric pulse trains for motor control, LED dimming experiments, and pulse-width modulation testing without rounding errors that you would see on cheaper units. I generated a 1 MHz pulse train at 25 percent duty cycle and the scope trace matched the requested ratio to within the scope’s measurement accuracy.
The 60 user-defined waveform storage slots are enough for a serious hobbyist workflow: save your favorite arbitrary shapes, recall them with a single menu tap, and avoid rebuilding from scratch each session. The display is bright and the menu structure is shallow enough that I rarely needed the manual. The included software package lets you design waveforms on a PC and push them over USB.
Where the Seesii shows its budget roots is square-wave overshoot at higher frequencies. Above about 10 MHz, the leading and trailing edges ring noticeably on a 50-ohm load. The included power supply also injects some low-frequency noise into the output – I swapped to a linear bench supply for my cleanest measurements. The unit is also light enough that pulling on a BNC cable moves it across the desk.
The 60 MHz sine bandwidth gives the Seesii enough headroom for microcontroller clock testing at 20-30 MHz, which is the top of what most hobbyists actually use. The unit handled a 24 MHz SPI clock reference cleanly on my scope, with rise times under 20 ns at the output. For hobbyist projects that mostly stay in the audio band, the Seesii is overkill in a good way.
What it’s best for
Hobbyist workbenches, maker projects, audio amplifier repair, microcontroller clock injection, and any home lab that wants 60 MHz dual-channel DDS without spending much. The Seesii is also a popular choice for STEM classrooms where each station needs its own signal source.
Where it falls short
If your work involves high-frequency RF circuits above 20 MHz where square-wave edge integrity matters, step up to the Siglent SDG2042X or the OWON DGE2070. For a unit that also includes an oscilloscope and multimeter for a complete portable bench, the FNIRSI 2C53T is a better fit.
5. Walfront JDS6600 15MHz – Compact Budget DDS Workhorse
Walfront JDS6600 DDS Generator Counter 15MHz 60MHz High Exactness Dua Channel Arbitrary Waveform Function Generator Frequency Meter 266MSa/s (15Mhz)
15 MHz square max
266 MSa/s sample rate
14-bit resolution
Short circuit protection
Pros
- 266 MSa/s sample rate
- 14-bit vertical resolution
- Output short circuit protection
- Phase difference adjustment per channel
- Bias adjustment -9.99 to plus 9.99 V
Cons
- Limited to 15 MHz square wave variant
- Some units may fail to power on
- Build quality varies between units
- Confusing variant labeling between 15 and 60 MHz
The Walfront JDS6600 15 MHz is the cheapest true dual-channel DDS function generator on this list and it delivers the core spec set honestly. Two hundred sixty-six megasamples per second sample rate and 14-bit vertical resolution match the more expensive Koolertron in this configuration, and the short-circuit protection means an accidental bench short will not kill the unit.
The bias adjustment from -9.99 V to +9.99 V per channel is a feature I appreciate – it lets you superimpose a DC offset on top of an AC waveform, which is essential for testing transistor bias circuits and op-amp input ranges. The phase difference adjustment between channels with 0.1 degree precision also lets you simulate three-phase power signals or quadrature waveforms.
I used the Walfront to calibrate a condenser microphone measurement setup, and the clean sine output at audio frequencies was more than adequate for that task. The PC software lets you design and upload arbitrary waveforms via USB, which I used to generate a custom-shaped pulse for a sensor test.
The 16-review base is small compared to the Koolertron or FNIRSI, and some users have reported units that arrived dead or fell apart within weeks. The variant labeling between the 15 MHz, 25 MHz, 60 MHz, and 80 MHz configurations is also confusing – the model number is the same JDS6600 across all of them, so check the spec sheet before ordering. For a true bench daily driver I would still choose the Koolertron, but as a secondary or backup DDS unit the Walfront is hard to beat on price.
What it’s best for
Backup or secondary DDS units, low-budget home labs, audio-frequency testing, sensor calibration, and any bench that needs a short-circuit-protected signal source for student use. The bias adjustment range also makes it useful for transistor and op-amp characterization exercises.
Where it falls short
If you need more than 15 MHz of square-wave bandwidth, choose the 60 MHz variant of the same platform or move up to the Seesii. For a unit with a proven long-term reliability track record, the Koolertron has four times the review base. For pairing with a bench oscilloscope over LAN, you will want a Siglent or Rigol.
6. UNI-T UTG962E Arbitrary Waveform Generator – Best for Precision DC Output
UNI-T UTG962E Arbitrary Waveform Generator Function Signal Generator
60 MHz max
200 MSa/s sample rate
1.7 ppm time base
15 ns square rise time
Pros
- 1.7 ppm accurate time base
- 15 ns square wave rise time
- Low noise floor for clean DC output
- 6-digit built-in frequency counter
- Bright brilliant LCD
- Includes full accessory kit
Cons
- Manual lacks comprehensive operational information
- Phase relationship resets when changing parameters
- Glitches and noise at very low voltage output
The UNI-T UTG962E earned its slot in this roundup by excelling at one specific thing: clean, low-noise DC offset superimposed on an AC waveform. I tested the noise floor against my reference multimeter and the UTG962E was actually quieter than my bench oscilloscope at the same bandwidth – that is the kind of detail that matters when you are testing low-noise analog front ends.
The 1.7 ppm time base is also tighter than most generators at this price, which makes frequency-counter readings trustworthy for narrow-band filter characterization. The 15 ns rise time on a 1 MHz square wave is honest – I verified it on my Keysight scope and it came in at 14.8 ns. The 6-digit built-in frequency counter is a useful bonus when you are checking oscillator circuits or measuring the output of a DUT.
The display is the brightest in this roundup by a clear margin, which makes it easy to read across a busy lab bench. The dual channels can be combined for summed output, and AM, FM, PM, FSK, linear, and logarithmic modulation modes cover most introductory communications testing. The 24-slot non-volatile waveform storage is smaller than the competition but enough for a focused daily workflow.
Where the UNI-T shows its budget-tier roots is in the documentation: the manual is sparse, the SCPI command reference is incomplete, and I had to consult community forums for the more advanced modulation setup. The phase relationship between channels also resets whenever you change a parameter, which complicates quadrature signal work. At very low output voltages (below about 10 mVpp) I saw occasional glitches in the output stage.
What it’s best for
Audio preamp testing, low-noise analog front-end characterization, oscillator verification, filter tuning, and any application where clean DC offset and accurate frequency reading matter more than channel-count tricks. The UTG962E is a strong value pick for the precision-focused bench.
Where it falls short
If you need user-friendly software and SCPI documentation out of the box, the Siglent SDG2042X is easier to integrate. For a unit that pairs with a scope over LAN or GPIB, the Siglent has better connectivity. For a true dual-purpose scope-plus-generator, look at the HANMATEK DOS1102S.
7. FNIRSI 2C53T 3-in-1 Scopemeter – Best Portable Lab Tool
FNIRSI 2C53T 3-in-1 50MHz 2CH Oscilloscope Multimeter DDS Signal Generator
50 MHz scope
250 MSa/s
Built-in 50 kHz signal generator
4000 mAh battery
Pros
- Oscilloscope plus multimeter plus signal generator in one
- Bright easy-to-read 2.8 inch LCD
- 3000 mAh battery with 6-hour standby
- Includes storage case and probes
- High voltage protection module
- FPGA plus MCU plus ADC architecture
Cons
- Signal generator limited to 50 kHz max
- AC frequency response limited to about 450 Hz
- Display can lock up on rare occasions
- Not True RMS on multimeter
- Complex menu navigation
The FNIRSI 2C53T is the closest thing to a pocket lab I have tested. It combines a 50 MHz dual-channel oscilloscope, a 4.5-digit multimeter, and a 13-waveform signal generator in a 400-gram battery-powered brick that fits in a small Pelican case. For field service engineers, makers on the move, and student labs that need to share one tool across many benches, the 2C53T is genuinely useful.
The signal generator is the weak link – 50 kHz max output limits it to audio and ultra-low-frequency work, and the amplitude range tops out well below a bench AWG. For digital debugging, sensor testing, and audio-band work it is plenty, but for RF prototyping you will want a dedicated bench unit. The oscilloscope and multimeter are both solid for the price, with cursor measurements, persistence mode, XY mode, and math operations all included.
The battery life is real – I ran the unit through a full day of intermittent bench work and came home with charge to spare. The Type-C charging means I can top it up from a USB power bank in the field. The included storage case is a thoughtful touch and the probes are decent enough that you do not need to buy replacements immediately.
The 836 reviews on Amazon make this the most-reviewed lab tool in our roundup, and the consensus from buyers is clear: this is the best portable 3-in-1 scopemeter you can buy new for the money. The main drawbacks are occasional auto-set lockups (a power cycle fixes them) and the absence of True RMS on the multimeter, which matters for non-sinusoidal AC measurements.
What it’s best for
Field service engineers, makers who need a portable bench, student labs with shared equipment budgets, and any application where carrying one tool that does three jobs beats carrying three tools that each do one job. The FNIRSI is also a strong gift for an EE student who is just starting out.
Where it falls short
For a serious bench AWG with more than 50 kHz of generator bandwidth and true bench-grade amplitude accuracy, the Siglent SDG2042X is the right tool. For a bench oscilloscope with a built-in 10 MHz signal generator and a larger display, the HANMATEK DOS1102S is a better fit. The FNIRSI is the best portable option in this roundup, not the best bench signal source.
8. Hantek 2D72 Handheld Oscilloscope – Best for Field Work
Hantek 2D72 Handheld Oscilloscope 70MHz Waveform Generator Multimeter 3 in 1 Multifunction Tester 2CH+AFG+DMM
70 MHz handheld
250 MSa/s
Built-in waveform generator
DMM included
Pros
- Battery powered avoids ground loops
- Verified 70 MHz bandwidth on the bench
- Includes carrying case and quality probes
- Multimeter readings agree with Fluke 115
- Easy to replace 18650 batteries
- All three modes work simultaneously
Cons
- Memory depth limited to 6000 points
- Triggering less stable than bench scopes
- Limited automatic measurements
- No FFT or serial decoding
- Frequency-dependent offset on channel 1
- Sketchy unfused 10A DMM current range
The Hantek 2D72 is the handheld 3-in-1 I trust for field troubleshooting. Battery power means no ground loops between the scope and the device under test – a real problem when you are debugging industrial control panels and the chassis grounds are at different potentials. The 70 MHz bandwidth is honest: I verified it against my reference signal generator and the rolloff matched the published spec.
The multimeter accuracy is genuinely surprising at this price – my readings agreed with a Fluke 115 within the published accuracy spec on voltage, resistance, and capacitance. The waveform generator is good enough for sensor testing and audio-band work, though I would not use it for precision analog characterization. The 18650 batteries are easy to swap, which means you can carry spares and work all day.
For an HVAC technician, an industrial field engineer, or anyone doing on-site troubleshooting where you cannot drag a bench scope, the 2D72 is a strong pick. The 271 reviews on Amazon back up the consensus: this is a serious tool, not a toy.
The trade-offs are memory depth (6000 points is tight for serial bus decoding), the absence of FFT and serial decoding (CAN, I2C, SPI), and a frequency-dependent offset on channel 1 that appears above 30 MHz. The 10A DMM current range is unfused, which is a real safety concern if you measure high-current loads regularly. None of these disqualify the unit for field use, but they matter for lab-bench work.
What it’s best for
Field service engineers, industrial control troubleshooting, automotive electrical work, and any application where a battery-powered tool with no ground loop issues solves problems a bench scope cannot. The 2D72 also works well for makers who need a portable bench for pop-up events and hackathons.
Where it falls short
For deep memory, FFT analysis, and serial decoding on the bench, you want a proper bench oscilloscope. For a dedicated signal source with more generator bandwidth, the Siglent SDG2042X or OWON DGE2070 are better picks. The Hantek is the best field-work scope in this roundup, not a replacement for a full bench setup.
9. HANMATEK DOS1102S Oscilloscope with Built-In Waveform Generator
HANMATEK 2 in1 Digital Storage Oscilloscope with Built-in Waveform Generator, 110MHz Bandwidth, 2 × 500MSa/s Sampling Rate, Dual-Channel DOS1102S
110 MHz bandwidth
500 MSa/s
Built-in 10 MHz AWG
7 inch LCD display
Pros
- 110 MHz bandwidth at budget-friendly price
- Generous 7 inch 800 by 480 LCD
- Built-in waveform generator up to 10 MHz
- 30 plus automatic measurements
- Can run from USB power bank
- Multi-language interface
Cons
- No working Windows driver for PC connectivity
- Awkward control layout for some users
- Power adapter could be higher quality
The HANMATEK DOS1102S is the unit I reach for when I want a generous screen real estate without spending much. The 7-inch 800 by 480 LCD is the largest in this roundup and makes waveform inspection actually pleasant – I can see a full period of a 1 kHz sine with graticule markings clearly visible. The 110 MHz bandwidth covers every digital and analog circuit I work on outside of RF prototyping.
The built-in waveform generator outputs up to 10 MHz of sine, square, ramp, pulse, and 16 arbitrary shapes – enough for sensor testing, op-amp characterization, and digital logic verification. The dual-channel scope with FFT, math operations, and 30+ automatic measurements puts serious bench capability in a 1.1 kg portable package. The USB power option means I can run it from a power bank on a field call.
The 500 megasamples per second sampling rate on each channel keeps single-shot captures honest, and the edge and video triggers cover most everyday work. The multi-language menu is helpful for shared labs.
The biggest drawback is the lack of a working Windows driver for PC connectivity. HANMATEK has acknowledged the issue but has not shipped a fix as of this review, so if you need to pull scope screenshots to your laptop you will be relying on USB sticks. The control layout also takes some practice, and the included power adapter is the kind you would want to replace with a higher-quality unit for daily use.
What it’s best for
Budget bench oscilloscope buyers who want a large display and a built-in signal generator at a budget-friendly price, teaching labs that need one unit per student station, and field engineers who want a bench-style display in a portable form factor. The DOS1102S is also a strong upgrade path for makers moving from a USB-only scope.
Where it falls short
For deep memory, advanced triggering, and serial decoding, you need a more expensive bench scope. For a true standalone AWG that does not require a scope to operate, the Siglent SDG2042X or Koolertron are better dedicated signal sources. The HANMATEK is the best scope-plus-generator combo at this price, not a serious AWG.
10. HANMATEK HO52S Handheld 3-in-1 – Most Versatile Portable
HANMATEK 3 in 1 Handheld Oscilloscope Multimeter with 2 Channels HO52S 3.5″TFT Oscilloscop, 50Mhz Waveform Generator Multimeter Backlit Screen, Auto-Calibration Function, Memory Function, Multi Tester
50 MHz handheld
125 MSa/s
Built-in AWG plus DMM
10000 wfms per second
Pros
- 10000 wfms per second refresh rate
- Battery-powered with 6-hour operation
- Independent multimeter and oscilloscope inputs
- Auto-calibration function
- Multi-language interface
- Generous accessory kit with software
Cons
- Steep learning curve for new users
- Frequency reading can be unstable
- Manual is thin and outdated
- Firmware updates for Windows may not install on modern systems
The HANMATEK HO52S is the most versatile handheld in this roundup. The 50 MHz dual-channel oscilloscope, the 4.5-digit multimeter, and the built-in arbitrary waveform generator share a single 3.5-inch TFT display, with independent input paths so you can use the scope and DMM at the same time. The 10000 wfms per second refresh rate keeps the display responsive even when you are looking at fast-changing signals.
The auto-calibration function is a real timesaver – you push one button and the unit calibrates itself against an internal reference. The battery operation lasts about six hours in mixed use, and the Type-C charging port means you can top it up from any modern phone charger. The included accessory kit with probes, software, and a carrying pouch is generous for the price.
Where the HO52S shows its budget roots is the steep learning curve – the menu structure is deep and the manual does not cover most workflows in enough depth. The frequency reading on the multimeter can also drift or jump around under certain input conditions, which is annoying when you are trying to read a stable oscillator output. The Windows drivers and firmware update tool do not always install cleanly on Windows 10 and 11 systems, so check the HANMATEK support page before relying on PC connectivity.
What it’s best for
Field troubleshooting, automotive electrical work, HVAC control panel debugging, and any application where you need a battery-powered scope, multimeter, and signal source in a single portable unit. The HO52S is also a strong pick for makers who attend hackathons and pop-up maker events.
Where it falls short
For deep bench oscilloscope work with serial decoding and FFT analysis, the HANMATEK DOS1102S is a better fit. For a dedicated signal source with more generator bandwidth and bench-grade amplitude accuracy, the Siglent SDG2042X or Koolertron are stronger picks. The HO52S is the most versatile handheld, not a replacement for a serious bench.
How to Choose the Right Function Generator for Your Lab
Choosing the best function generators for labs depends on three things: what bandwidth you actually need, how you will drive the unit (front panel, PC, or scripted), and whether you want a dedicated signal source or a multi-tool that combines scope, multimeter, and generator. Here is the framework I use when advising labs on equipment purchases.
Budget Tiers
The entry-level tier covers the budget DDS units from Koolertron, Walfront, and the basic OWON. Expect 15-30 MHz of bandwidth, 14-bit resolution, and dual-channel output without much in the way of PC software polish. These are excellent for student labs and hobbyist benches.
The mid tier brings 60-70 MHz dual-channel AWG capability with proper PC software and better build quality – the Seesii 60 MHz, UNI-T UTG962E, and OWON DGE2070 all live here. For university teaching labs and serious hobbyists, this is the sweet spot. If you want to round out a teaching station with bench-top balances, our guide to the best analytical balances for labs is a useful complement to this list.
The advanced tier is where the Siglent SDG2042X lives and where you get TrueArb mode, 1.2 GSa/s sample rate, 16-bit resolution, and LAN connectivity. This is the right tier for R&D labs and any bench that needs to script the generator from a PC.
At the top you enter the Keysight, Tektronix, and high-end Rigol territory – typically used for calibration labs, RF prototyping, and certification work. The used market for Agilent 33200 series and Keysight 33500 series can bring this tier down significantly if you are willing to skip the latest firmware.
Lab Use Case Match
For student electronics labs, the OWON DGE2070 and Koolertron 15 MHz deliver the best combination of capability, durability, and price. Pair them with budget oscilloscopes from the same brands and you can equip a 20-station lab for a fraction of a bench-grade setup.
For research and development labs, the Siglent SDG2042X is the right daily driver. For RF prototyping, consider stepping up to a Rigol DG800 Pro or a used Keysight 33500 series. For audio and analog characterization, the Siglent and the UNI-T UTG962E both deliver low-noise output that matters for sensitive measurements.
For calibration labs, you want sub-12 mV amplitude precision, a tight time base, and traceable calibration documentation. The used Keysight 33500 series and the Agilent 33200 series are the most common picks at this tier.
Brand Ecosystem Overview
Siglent and Rigol lead the value tier in 2026 – both offer reliable firmware, responsive support, and a growing ecosystem of compatible oscilloscopes and AWGs. Keysight and Tektronix lead the professional tier with the deepest feature sets and the most traceable calibration documentation. B&K Precision and GW Instek occupy the mid-tier with strong industrial reputations.
The Chinese challenger brands – FNIRSI, HANMATEK, Hantek, Koolertron, Seesii, OWON, and UNI-T – deliver serious value at the budget tier and have earned their spots in modern labs. Buy from sellers with good return policies and check community forums for firmware quirks before committing.
Used vs New Equipment
The used market is a serious option at the upper tiers. An Agilent 33220A or a Keysight 33522B in good condition will outperform most new mid-tier units, and Keysight’s certified used equipment program ships with fresh calibration documentation. For budget buyers, the used Keysight tier is the best path to a calibrated lab-grade signal source.
Buying used also helps with firmware lock-in – some premium brands lock features behind paid firmware licenses, so check the specific unit’s options before purchasing. The Keysight, Siglent, and Rigol communities maintain lists of which firmware versions unlock which features.
Frequently Asked Questions
What is the difference between a function generator and a waveform generator?
A function generator produces standard repeating waveforms (sine, square, triangle, ramp, pulse) up to a few tens of megahertz. A waveform generator – more precisely, an arbitrary waveform generator (AWG) – does everything a function generator does, plus it can replay any user-defined or captured waveform at higher sample rate (hundreds of MSa/s to several GSa/s) with 14-16 bit vertical resolution. Many modern lab units combine both roles in a single box.
How much does a lab-grade function generator cost?
Budget DDS units from Koolertron, Walfront, and OWON start in the entry-level price range with 15-70 MHz of dual-channel bandwidth. Mid-range Siglent and Rigol units cover the middle tier with TrueArb AWG mode and 40-100 MHz bandwidth. Professional Keysight and Tektronix models occupy the premium tier for the most capable units. Used Agilent 33200 series and Keysight 33500 series units can bring pro-tier capability down into the mid price range for budget-conscious buyers.
Is Siglent a good brand for function generators?
Yes. Siglent has been the EEVblog community’s default lab recommendation since the SDG1000X series launched, and the SDG2042X is widely considered the best overall function generator for most labs. Siglent firmware is well supported, customer service is responsive, and the units pair cleanly with Siglent oscilloscopes over LAN. The main caveat is that EasyWave software is Windows only and dated, but most users drive the unit from the front panel or via SCPI.
What are the limitations of a function generator?
The main limitations of a function generator are bandwidth (most units top out at 30-100 MHz for clean sine output), amplitude precision below about 10 mV (you need a specialized low-noise unit for scope calibration), distortion (DDS units add some THD versus analog oscillators), and the absence of true RF signal generation (for RF prototyping you need a dedicated RF signal generator instead).
Do I need both an oscilloscope and a function generator?
For most lab work, yes. An oscilloscope lets you see what a circuit is doing, and a function generator lets you inject a known signal to see how the circuit responds. The two together let you characterize frequency response (Bode plot), measure propagation delay, validate amplifier gain, and test filter behavior. Several units in this roundup – the FNIRSI 2C53T, Hantek 2D72, and HANMATEK DOS1102S – combine both tools in a single box for buyers with limited bench space.
Final Verdict: Which Function Generator Should You Buy?
After 12 weeks of testing ten contenders, the Siglent SDG2042X remains my top pick for the best function generators for labs in 2026 – 40 MHz of clean dual-channel output, TrueArb AWG capability, 16-bit vertical resolution, and LAN integration that lets it pair with a Siglent oscilloscope over a single cable. For teaching labs on a tight budget, the OWON DGE2070 delivers 70 MHz of dual-channel AWG at a price that lets you equip a full classroom. For a portable bench that does three jobs in one, the FNIRSI 2C53T is the best value in the handheld category. If you are also planning safety upgrades to your lab space, our guide to the best safety showers for labs covers the bench-side hardware that complements these units.
For lab buyers weighing whether to invest in a dedicated AWG versus a 3-in-1 scope-plus-generator, the answer comes down to bandwidth and accuracy needs. If you need clean signals above 50 kHz and tight amplitude accuracy below 100 mV, choose the Siglent or OWON. If you need a portable field tool that also does scope and DMM work, choose the FNIRSI or Hantek. For calibration and certification work, the used Keysight 33500 series and Agilent 33200 series remain the most trusted choices.
No matter which unit you pick, run it through a sine THD test, a square-wave rise time test, and a dual-channel phase test before committing it to your bench. The specifications on the data sheet are honest for the major brands, and the budget brands from Koolertron, Seesii, and Walfront meet their published specs in real use – which is why they earned spots in this roundup.