10 Best Function Generators With Frequency Counter For Accurate Bench Testing In 2026

If you need a bench tool that can generate clean test signals and verify them on the spot, a function generator with a built-in frequency counter is a smart buy.

This roundup focuses on practical options for calibration, troubleshooting, lab work, and electronics learning, with an eye on accuracy, channel count, and ease of use.

Best 10 Function Generators with Frequency Counter Picks for 2026

High-Speed Dual-Channel Pick – Koolertron 60MHz DDS Counter

If you need function generators with frequency counter support for lab work or bench troubleshooting, this Koolertron unit stands out for its dual-channel DDS output, 60MHz sine capability, and built-in measurement tools. It combines arbitrary waveform generation with frequency, period, pulse width, and counting functions, making it practical for both signal creation and verification.

Best For: Electronics labs, teaching setups, and users who want a versatile generator with measurement features.

Pros:

• Dual-channel output with independently adjustable parameters.
• Built-in frequency, period, pulse width, and counting functions.
• Supports sine, square, triangle, sawtooth, pulse, noise, and custom waveforms.
• Stores up to 99 user parameter presets for quick recall.

Cons:

• More feature-rich than a basic starter generator.
• Advanced waveform and sweep options may be more than casual users need.

Overall, this is a capable choice if you want a function generator with frequency counter features and enough flexibility for serious bench use. The higher output ceiling and storage options make it especially useful when repeated setups and waveform variety matter.

Portable Budget Option – FG 100 DDS Function Generator

This compact pick is a practical entry point for anyone comparing function generators with frequency counter features on a budget. It focuses on core waveform output, simple setup, and stable frequency use for oscilloscope work, calibration tasks, and basic electronics testing.

Best For: Students, field use, and budget-conscious users who need a small, easy-to-carry generator.

Pros:

• Small, portable design that is easy to carry and operate.
• Works with oscilloscopes for testing, debugging, and calibration tasks.
• Supports sine, triangular, and sawtooth waveforms.
• Can help with oscilloscope and probe attenuator pulse adjustment.

Cons:

• Waveform selection is more limited than higher-end generators.
• Best suited to basic use rather than advanced lab workflows.

For straightforward signal generation and frequency-related bench tasks, this model keeps things simple and affordable. It is a sensible option when portability and ease of use matter more than advanced waveform depth.

Feature-Rich Value Pack – UNI-T UTG962E 60MHz Generator

For buyers comparing function generators with frequency counter features, the UNI-T UTG962E offers a strong mix of flexibility and value. It combines dual channels, multiple modulation modes, arbitrary waveform storage, and a built-in high-accuracy counter, making it a versatile choice for hobby and light lab use.

Best For: Hobbyists, students, small labs, and users who want a ready-to-use feature set.

Pros:

• Dual-channel design with channel combining support.
• Built-in 6-digit frequency counter with 1μHz to 60MHz range.
• Includes AM, FM, PM, FSK, line, and log modulation types.
• Comes with useful accessories, including cables and a power adapter.

Cons:

• Maximum frequency tops out at 60MHz, below the most powerful bench units.
• Less geared toward advanced research than top-end lab generators.

This model is a balanced choice if you want a modern generator without jumping to a more expensive professional system. Its counter, waveform, and modulation features cover a lot of practical test-and-learn scenarios.

Advanced Bench Choice – Koolertron 80MHz DDS Generator

If you want function generators with frequency counter capability and a broader bench feature set, this Koolertron model is the most expansive option here. It adds 80MHz sine output, mobile app control, PC software support, arbitrary waveform drawing, and extensive measurement functions for more demanding setup work.

Best For: Users who want advanced control options, higher output range, and more storage.

Pros:

• Up to 80MHz sine output with 275MSa/s sampling.
• Built-in frequency, period, pulse width, and counting functions.
• Supports app control, PC software, and arbitrary waveform drawing.
• Stores up to 100 groups of instrument state parameters.

Cons:

• Larger and heavier than simpler portable generators.
• Feature set may be more than basic users require.

This is the strongest fit when you want a generator that can do more than just output waveforms. The combination of counter functions, remote control options, and higher frequency headroom makes it a serious bench tool.

Compact dual-channel bench pick – YERTAI ET3320C 20MHz Dual-Channel Function Generator

If you want a practical function generator with frequency counter for bench work, the YERTAI ET3320C covers the basics well in a compact dual-channel design. It combines 20MHz DDS output, a 100MHz high-precision frequency counter, and USB communication, making it a useful pick for general signal generation and measurement tasks.

Best For: Students, labs, and hobbyists who want a lightweight dual-channel generator with built-in counting and waveform editing.

Pros:

• 2.4-inch TFT LCD with a clear graphic interface for easier operation
• Built-in 100MHz high-precision frequency counter plus 32-bit counter
• Five basic waveforms and 32 arbitrary waveforms, with storage for 50 custom waveform sets
• USB device communication and internal/external ASK, FSK, and PSK modulation

Cons:

• 20MHz output range is lower than some competing generators
• Arbitrary waveform editing software must be obtained from the manufacturer
• Best suited to standard bench use rather than advanced high-frequency applications

Overall, this model is a straightforward option if your priority is a compact tool that combines signal output and frequency counting without adding unnecessary complexity. The light weight and internal waveform storage make it especially convenient for everyday lab and teaching use.

Balanced dual-channel lab option – Koolertron 25MHz Dual-Channel DDS Generator Counter

The Koolertron DDS Signal Generator Counter is a solid middle-ground choice if you want function generators with frequency counter capability and dual-channel output. It offers 25MHz sine output, 200MSa/s sampling, and built-in measurement features, so it fits well in everyday electronics testing where stable signal generation matters.

Best For: Electronic labs, production testing, and teaching setups that need dual-channel output with basic measurement tools.

Pros:

• Dual-channel DDS output with TTL level output for flexible testing
• Includes frequency, period, pulse width, and counting functions
• Linear and logarithmic sweep modes for signal scanning
• Stores 10 instrument state presets and 16 user-defined waveform slots

Cons:

• Waveform storage is more limited than higher-capacity models
• 2-inch screen is relatively small
• 12-bit vertical resolution may not suit users seeking finer waveform detail

For users who need dependable signal generation plus practical measurement functions, this Koolertron model gives you a useful feature set without pushing into more specialized territory. It is a capable option for labs and classrooms where dual-channel control and sweep functions are genuinely helpful.

Most capable storage-focused pick – Koolertron 30MHz Upgraded Dual-Channel Function Generator

Among function generators with frequency counter features, this upgraded Koolertron model stands out for its stronger waveform storage and higher 30MHz sine output. It keeps the same dual-channel DDS approach and measurement toolkit, while adding more user waveform memory and a higher 14-bit vertical resolution for users who want a little more flexibility.

Best For: Engineers, labs, and research users who want more waveform storage and a higher output ceiling.

Pros:

• 30MHz sine-wave output with dual-channel DDS and TTL output
• Frequency, period, pulse width, and counting measurement functions
• Stores 99 instrument-state presets and 60 user-defined waveform slots
• 14-bit vertical resolution and 200MSa/s sampling rate

Cons:

• More advanced features may be more than casual users need
• 2-inch display may feel cramped for some workflows
• Still limited to the brand’s interface and preset structure

If waveform memory and a higher output limit matter more than keeping things simple, this is the most capable of the three options here. It is especially appealing for users who expect to revisit stored setups often and want a broader range of saved custom waveforms.

Top Pick – Seesii 60MHz Dual-Channel DDS Generator

If you need function generators with frequency counter features for bench testing, the Seesii 60MHz model stands out for its higher sine-wave ceiling, dual-channel output, and built-in measurement tools. It combines arbitrary waveform generation with a frequency meter, period measurement, pulse width measurement, and counting, making it a flexible option for labs, repair work, and teaching setups.

Best For: Users who want a higher-frequency dual-channel generator with built-in counting and measurement functions.

Pros:

• Up to 60MHz sine-wave output with 200MSa/s sampling
• Dual-channel DDS output with independently adjustable settings and duty cycle
• Includes frequency, period, pulse width, and counting functions
• Stores 99 instrument parameter profiles and 60 user-defined waveforms

Cons:

• More capability than needed if you only need basic low-frequency signal generation
• Feature-rich controls may take some time to learn

This is the strongest all-around pick in the group if you want both signal generation and frequency counter functionality in one compact unit. Its broader frequency range gives it extra headroom for more demanding test tasks.

Value Choice – Koolertron 15MHz Dual-Channel DDS Generator

The Koolertron 15MHz model is a practical choice if you want function generators with frequency counter features without moving into the highest-frequency tier. It offers dual-channel DDS output, arbitrary waveform support, and the same core measurement functions, so it fits well in general electronics labs, teaching environments, and production testing.

Best For: Buyers who want a capable dual-channel generator with counter functions at a lower frequency range.

Pros:

• Dual-channel output with sine, square, triangle, sawtooth, pulse, noise, and user-defined waveforms
• Built-in frequency measurement, period measurement, pulse width measurement, and counting
• Stores 99 instrument states and 60 user-defined waveforms
• 200MSa/s sampling with linear and logarithmic sweep functions

Cons:

• 15MHz sine-wave output is lower than the 60MHz model in this list
• Waveform length is fixed at 2048, which may limit some custom use cases

For users who mainly need dependable everyday signal generation plus frequency-counter features, this is a well-rounded option. It keeps the important tools while staying in a more modest frequency class.

Best Compact Upgrade – Seesii 15MHz FG-615 Compact Generator

The Seesii FG-615 is a compact option among function generators with frequency counter features, and it keeps the same measurement and storage tools found in larger bench units. With dual-channel DDS output, user-defined waveforms, and built-in counting, it works well when you want a portable generator that still covers common testing tasks.

Best For: Users who want a smaller dual-channel generator with the same core counter and sweep functions.

Pros:

• Compact 2.4-inch LCD design with intuitive controls
• Dual-channel DDS output with sine, square, triangle, sawtooth, pulse, noise, and user-defined waveforms
• Includes frequency, period, pulse width, and counting functions
• Stores 99 settings and 60 user-defined waveform slots

Cons:

• 15MHz sine-wave output is best suited to midrange testing needs
• Smaller display may be less convenient than larger-screen models

If space and portability matter, this model gives you the core features of a full bench generator in a smaller footprint. It is a sensible choice for users who want measurement capability without a larger instrument.

How We Picked the Best Function Generators with Frequency Counter

We prioritized Function Generators with Frequency Counter features that offer useful output ranges, dual-channel support where available, and clear displays for faster setup. We also looked for models that suit common testing tasks such as waveform verification, audio work, sensor simulation, and basic calibration.

Because buyers use these tools in different settings, we favored options that balance frequency range, waveform flexibility, and practical controls over spec-sheet extremes alone.

Quick Comparison Tips

When comparing Function Generators with Frequency Counter features, the first questions are usually range, accuracy, and usability. A higher maximum frequency is helpful, but only if the instrument remains stable and readable across the range you actually use.

Dual-channel models are better if you need two synchronized outputs or want to compare signals side by side. If you mostly test simple circuits, a lower-cost single-purpose setup may be enough, but the integrated counter adds convenience either way.

Key Buying Factors for Function Generators with Frequency Counter

Frequency Range and Stability

Choose a generator whose frequency range comfortably exceeds your typical needs. For lab and repair work, stability and repeatability matter as much as top-end frequency.

Waveform Options and Output Quality

Look for sine, square, triangle, and arbitrary waveform support if you need flexibility. Cleaner output and better amplitude control can make troubleshooting much easier.

Counter Readability and Measurement Usefulness

The counter should be easy to read and quick to trust. A built-in frequency meter is most useful when it helps confirm settings without needing a separate instrument.

Channels, Interface, and Workflow

Dual-channel units are ideal for more complex testing, while USB connectivity can help in calibration or computer-assisted workflows. A straightforward front panel matters if you change settings often.

Who Should Buy Which Function Generators with Frequency Counter?

If you are a student, hobbyist, or home electronics user, a compact model with a modest frequency range may be the best value. If you work on communications, instrumentation, or more demanding bench tasks, consider a higher-frequency dual-channel unit with stronger waveform flexibility.

For calibration-focused users, Function Generators with Frequency Counter capabilities are especially useful because they combine signal creation and verification in one device. That can reduce bench clutter and speed up routine testing.