Best Function Generators of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 9, 2026

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Function generators are versatile electronic devices designed for a wide range of applications. They are commonly used in electronics labs to generate different types of signals such as sine, square, and triangle waves, as well as more complex waveforms. Function generators are also used in various industries such as telecommunications, aerospace, and automotive to test and troubleshoot electronic circuits and systems. They come in different shapes and sizes, and their features vary depending on the model. Some of the common features include frequency range, amplitude range, waveform selection, and modulation capabilities. Overall, function generators are essential tools for anyone working with electronic circuits or systems.

At a Glance: Our Top Picks

Rigol DG1022Z 25MHz Function Generator Cover #TOP 1
Rigol DG1022Z 25MHz Function Generator
ftb score rating icon 9.9
Siglent SDG2042X Function Generator Cover #TOP 2
Siglent SDG2042X Function Generator
ftb score rating icon 9.8
Siglent Technologies SDG810 Signal Generator Cover #TOP 3
Siglent Technologies SDG810 Signal Generator
ftb score rating icon 9.6

Top 10 Function Generators

#TOP 1

Rigol DG1022Z 25MHz Function Generator

DG1022Z
Rigol DG1022Z 25MHz Function Generator Cover
Rigol DG1022Z 25 MHz Arbitrary Function Generator with Second Channel

The Rigol DG1022Z Generator offers two fully independent channels, allowing you to generate multiple signals simultaneously for complex testing scenarios. It features Signal Fidelity (SiFi) technology, ensuring the waveforms you create are perfectly replicated, which is crucial for precise experiments and troubleshooting. With a waveform memory length ranging from 2 million to 16 million points per channel, you can work with detailed and extended arbitrary waveforms, giving you greater flexibility in your projects. Additionally, its stable frequency performance and low jitter provide reliable and accurate signal output, helping you achieve consistent results every time.

What We Like
Dual independent channels
High waveform accuracy
Long arbitrary waveform memory
Stable frequency output
Low signal jitter
#TOP 2

Siglent SDG2042X Function Generator

SDG2042X
Grey
Siglent SDG2042X Function Generator Cover
Siglent Technologies SDG2042X Arbitrary Waveform Function-Generators, 40 MHz, Grey

The Siglent Function Generator offers dual-channel capabilities with a frequency range of up to 40 MHz, ideal for generating various signal types. Its touch screen display makes it easy for you to navigate through functions and settings, enhancing your user experience. With 16-bit vertical resolution, you can achieve precise waveform outputs, ensuring accuracy in your projects. Additionally, the built-in high precision frequency counter allows you to measure frequencies accurately, making it a great tool for testing and experimentation.

What We Like
Dual-channel functionality
High precision frequency counter
Touch screen interface
16-bit vertical resolution
#TOP 3

Siglent Technologies SDG810 Signal Generator

SDG810
Light Gray
Siglent Technologies SDG810 Signal Generator Cover
Siglent Technologies SDG810 Siglent Single Channel 10 mhz Bandwidth Signal Generator, Function Generator, Arbitrary Waveform Generator, 125 MSa/s Sampling Rate, Light Gray

The Siglent Technologies SDG810 Signal Generator is a single channel function generator with advanced DDS technology that provides 125 MSa/s sampling rate and 14 bit vertical resolution. It offers 5 kinds of standard waveforms and 46 kinds of arbitrary waveforms, including DC, with complete modulation functions such as AM, FM, and PM. The generator also features innovative Easy Pulse technology that outputs pulses of low jitter, quick rising/falling edge. It has standard interfaces of USB Device and Host, supporting U-Disk storage and software updates.

What We Like
Advanced DDS technology for precise waveform generation
Complete modulation functions for versatile application
Innovative Easy Pulse technology for low jitter, quick rising/falling edge pulse generation
#TOP 4

Seesii DDS Dual-Channel 60MHz Signal Generator

FG-660
60MHz
Seesii DDS Dual-Channel 60MHz Signal Generator Cover
Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform Function Generator Frequency Meter

The Seesii 60MHz Signal Generator offers upgraded signal stability by using advanced FPGA and high-speed microprocessor technology, ensuring you get reliable and steady wave outputs. It allows you to store up to 99 custom settings and 60 user-defined waveforms, making it easy to save and recall your favorite configurations without needing a computer. The device provides high precision with dual-channel outputs, giving you accurate and low-distortion signals like sine, square, and triangle waves, perfect for various testing needs. Additionally, it includes a frequency meter with sweep and measurement functions, helping you analyze signals with ease and flexibility.

What We Like
Stable signal output
Custom waveform storage
High precision dual-channel
Built-in frequency meter
#TOP 5

Goupchn PSG9060 60MHz Dual Channel DDS Signal Generator

PSG9060
PSG9060
Goupchn PSG9060 60MHz Dual Channel DDS Signal Generator Cover
Goupchn Programmable DDS Signal Generator 60MHz Dual Channel Arbitrary Waveform Function Generator Frequency Meter Cell Phone Control Signal Source

The Goupchn PSG9060 Signal Generator lets you create various waveforms like sine, square, triangle, and custom shapes, making it easy to automate your testing or experiments. You can control it directly from your mobile phone, adding convenience and flexibility to your workflow. The device supports firmware updates, so you can fix bugs or add new features anytime by connecting it to your PC. Additionally, it allows external voltage control over frequency, amplitude, and duty cycle, which is perfect for precise industrial testing and adjustments. With dual-channel modulation, you can also combine signals for more advanced applications.

What We Like
Programmable waveform output
Mobile phone control
Firmware upgrade support
Voltage-controlled frequency and amplitude
Dual-channel modulation
#TOP 6

Seesii FG-615 Signal Generator

DDS-15MHz
15MHz
Seesii FG-615 Signal Generator Cover
Professional Upgraded 15MHz DDS Signal Generator Counter, Seesii 2.4Inch LCD Display High Precision 200MSa/s Dual-Channel Arbitrary Waveform FG-615 Function Generator Frequency Meter

The Seesii FG-615 is a versatile dual-channel signal generator that boasts enhanced signal stability thanks to its advanced FPGA and MCU technology. You can easily store up to 99 custom waveform settings, making it convenient to reproduce your preferred configurations whenever needed. The generator delivers precise and low-distortion output for various waveforms, including sine, square, and triangle waves. Additionally, it features a frequency meter that allows you to measure frequencies and pulse widths accurately. This combination of features makes the FG-615 a valuable tool for both beginners and professionals in electronics.

What We Like
Enhanced signal stability
User-defined waveform storage
High precision output
Comprehensive frequency measurement
#TOP 7

TKXEC Function Signal Generator 7.83Hz Schumann Wave

0a564508-7fef-4e68-b510-046808709f09
TKXEC Function Signal Generator 7.83Hz Schumann Wave Cover
Function Signal Generator 7.83Hz Schumann Wave Earth's electromagnetic Field Resonance 0.01Hz~200KHZ Adjustable Sine Wave Ultra-Low Frequency Pulse Generator,Sleep Aid Sound Frequency Machine

The TKXEC Signal Generator offers a wide frequency range from 0.0001 to 200KHz, letting you customize signals to suit your specific needs for better results. Its high precision comes from advanced crystal oscillator technology, ensuring stable and accurate frequencies with fine resolution, which is great for detailed work. The clear 1.8-inch color LCD screen makes it easy to input frequencies directly and adjust settings like brightness and timer, simplifying operation. Plus, the built-in rechargeable battery frees you from power cords, so you can place it anywhere convenient, like your bedside or desk.

What We Like
Wide frequency range
High precision output
Color LCD display
Rechargeable battery
#TOP 8

OWON DGE2035 Dual Channel 35MHz Function Generator

AWG2035-US-35MHz/2CH
Grayish white
OWON DGE2035 Dual Channel 35MHz Function Generator Cover
OWON Function Generators, 2 CH 35MHz Frequency Meter, Waveform Generator 125MSa/s Sample Rate with 14 Bits Vertical High Resolution 3.6 inch TFT LCD (35MHz/2CH/OWON DGE2035)

The OWON 35MHz Function Generator offers dual channels with a frequency output up to 35MHz, making it ideal for various electronic testing and development needs. With a high sample rate of 125MSa/s, you get precise waveform generation for accurate signal analysis. The device boasts a vertical resolution of 14 bits, which means you can expect detailed and clear signal output, helping you work with fine waveform details. Additionally, it supports a wide range of waveforms, including 5 basic and 150 built-in arbitrary types, giving you flexibility to create and test different signals easily.

What We Like
Dual channel output
High 125MSa/s sample rate
14-bit vertical resolution
Wide waveform variety
#TOP 9

OWON DGE1030 30MHz Function Generator

DGE1030
OWON DGE1030 30MHz Function Generator Cover
OWON Function Generators, DGE1030 30MHz with 1CH Signal Generator, 125MSa/s Sample Rate Arbitrary Generator 8k Arb Wave Length (30MHz/1CH/OWON DGE1030)

The OWON 30MHz Generator offers a single channel output with a frequency up to 30MHz and a high sample rate of 125MSa/s, giving you precise and detailed waveform signals. It features a 14-bit vertical resolution and supports an 8K arbitrary waveform length, allowing you to create complex and accurate waveforms. You can choose from five basic waveforms and over 160 built-in arbitrary options, making it versatile for various testing needs. Additionally, the generator includes multiple modulation functions like AM, FM, and sweep, enabling you to simulate a wide range of signal types for your projects or experiments.

What We Like
High sample rate (125MSa/s)
Wide frequency range (30MHz)
Multiple modulation functions
Extensive waveform options
High vertical resolution (14-bit)
#TOP 10

UNI-T UTG932E 30MHz Function Generator

UTG932E
New 30MHz
UNI-T UTG932E 30MHz Function Generator Cover
UNI T UTG932E 30MHz Function Generator Arbitrary Waveform Signal Generator Dual-Channel 200MSa/s 14 Bits Frequency Meter

The UNI-T UTG932E 30MHz Function Generator is a versatile dual-channel signal generator that offers a wide range of output waveforms including sine, square, pulse, ramp, noise, DC, and arbitrary. With modulation types such as AM, FM, PM, FSK, Line, and Log, this function generator allows for flexible signal manipulation. The 24 groups non-volatile arbitrary waveform generator storage and multi-language menu make it easy to operate. The 4.3 inches TFT LCD screen provides a clear display of the settings and waveforms. Whether you need to generate specific waveforms for testing or perform modulation experiments, the UNI-T UTG932E 30MHz Function Generator is a reliable tool that offers convenience and accuracy.

What We Like
Versatile waveform options
Flexible signal manipulation
Easy operation with multi-language menu
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are the two types of function generators?

There are two main types of function generators: (1) signal generators, which are also known as arbitrary/function generators or arbitrary waveform generators, and (2) logic sources, also called pulse or pattern generators. These function generators serve different purposes and have different capabilities.

2. Is a function generator an AC power supply?

No, a function generator is not an AC power supply. While it can provide a variable voltage source for AC circuits, it is primarily used to generate different waveforms and vary their frequency. The frequency is measured in Hertz, or cycles per second.

3. What is the difference between a signal generator and a function generator?

The main difference between a signal generator and a function generator is the range of waveforms they can generate. Signal generators typically only generate a Sine wave and have limited frequency stability. Function generators, on the other hand, can generate various waveforms like sine, square, sawtooth, and triangular.

4. Is a function generator AC or DC?

A function generator can be used as both an AC and DC power supply. It provides a variable voltage source that can be used for AC circuits. Additionally, it can vary the frequency of the generated waveform, which is measured in Hertz.

5. What is the difference between a function generator and an RF generator?

The main difference between a function generator and an RF generator is the frequency range they can generate. A function generator can produce signals up to a few megahertz. However, for testing advanced RF circuits, an RF and microwave signal generator capable of producing frequencies in the range of a few gigahertz would be required.

Editor's Notes

During our function generator research, we found 24 function generator products and shortlisted 10 quality products. We collected and analyzed 5,336 customer reviews through our big data system to write the function generators list. We found that most customers choose function generators with an average price of $153.28.

The function generators are available for purchase. We have researched hundreds of brands and picked the top brands of function generators, including Rigol, Siglent, Seesii, Goupchn, TKXEC. The seller of top 1 product has received honest feedback from 150 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.