12 Best Function Generators For Labs of 2026 With Clean Waveforms

1

Dual-Channel Arbitrary Waveform Function Generator, 70MHz, 300MSa/s, 14-Bit

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  9.7
• Brand
  Abestop

Key specs2

Signal Sampling Speed

300MSa/s

Output Resolution

14-bit vertical resolution

Pros & cons42

Pros

• Generates signals up to 70MHz for higher-frequency analog prototyping
• 300MSa/s sampling speed produces dense point coverage across fast signals
• 14-bit vertical resolution minimizes stepping on complex waveform curves
• Dual-channel design allows concurrent signal generation for multi-stage circuits

Cons

• Display screen size and menu structure are not specified on the listing
• Arbitrary waveform memory depth is omitted and needs verification for long patterns

2

Rigol DG1032Z Signal Generator, 30MHz Function Arbitrary Waveform Generator

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  9.3
• Brand
  Rigol

Key specs2

Bench Frequency Ceiling

30MHz

Channel Architecture

Dedicated benchtop signal source for standard laboratory function and arbitrary signal generation.

Pros & cons32

Pros

• 30MHz frequency output suits common audio, radio, and digital clock circuits
• Integrated arbitrary waveform generation allows non-standard signal creation
• Dedicated benchtop enclosure provides stable tabletop operation during adjustments

Cons

• Sampling rate and vertical bit resolution are unlisted on this model entry
• 30MHz ceiling limits work on higher-speed RF communication circuits

3

GuliTech FY3200S 6/12/20/24/25MHz Digital DDS Dual-Channel Function Signal Source Generator

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  9.3
• Brand
  GuliTech

Key specs2

Core Bandwidth Limit

6MHz

Frequency Counter Function

Includes an integrated pulse frequency meter to check external signal frequencies directly.

Pros & cons32

Pros

• Dual-channel DDS architecture supports dual independent signal streams
• Integrated pulse frequency meter reads incoming signals on the bench
• Direct DDS digital synthesis maintains steady frequency control

Cons

• 6MHz maximum bandwidth restricts use on high-frequency logic or RF circuits
• Sampling rate and memory depth are unstated on the product listing

4

OWON DGE2035 Dual-Channel Arbitrary Waveform Generator, 35MHz Function Generator, 125MSa/s

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  9.2
• Brand
  OWON

Key specs2

Display Interface

3.6-inch TFT LCD

Modulation Capabilities

• Supports amplitude modulation (AM)
• Supports frequency modulation (FM)
• Supports frequency shift keying (FSK)

Pros & cons42

Pros

• Built-in AM, FM, and FSK modulation modes support diverse communications workloads
• 3.6-inch TFT LCD clearly displays waveform parameters and menu settings
• PC control interface simplifies automated parameter sweeps and arbitrary setups
• Dual-channel design with 14-bit resolution ensures smooth output curves

Cons

• 125MSa/s sampling rate limits fine detail on arbitrary signals near 35MHz
• Internal arbitrary memory depth is not specified on the product page

5

Rigol DG1022Z 25 MHz Arbitrary Function Generator with Second Channel

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  8.9
• Brand
  Rigol

Key specs2

Rated Frequency Limit

25MHz

Dual Output Support

Equipped with a second channel to drive two related circuits or monitor differential inputs.

Pros & cons32

Pros

• Dedicated second channel enables differential signaling and dual-path benchmarks
• 25MHz bandwidth covers everyday analog filtering and microcontroller clocks
• Arbitrary waveform functionality supports customized signal profiles

Cons

• Vertical bit depth and sampling speed are omitted from the product listing
• 25MHz ceiling falls short for high-speed digital communications

6

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

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  8.5
• Brand
  Siglent

Key specs2

Bandwidth Rating

40MHz

Waveform Generation Scope

Provides standard functions and arbitrary waveform output for general bench research.

Pros & cons32

Pros

• 40MHz bandwidth accommodates medium-speed RF and analog prototyping tasks
• Benchtop chassis delivers a durable physical platform for active lab benches
• Arbitrary waveform generation handles complex synthetic waveform sequences

Cons

• Sampling rate and vertical resolution are not detailed on this listing
• Confirm whether dual channels or single output are active on this specific model

7

FG-100 DDS Function Signal Generator 1HZ-500KHz Sine Frequency Counter Sawtooth

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  8.5
• Brand
  Cywhrvzsf

Key specs2

Low-Frequency Span

1Hz to 500KHz

Supported Wave Shapes

Generates sine and sawtooth waveforms while functioning as a benchtop frequency counter.

Pros & cons33

Pros

• Ultra-compact footprint fits minimal bench spaces or mobile toolkits
• Outputs sine and sawtooth waveforms alongside an integrated frequency counter
• Covers low-frequency work from 1Hz up to 500KHz for audio filter analysis

Cons

• 500KHz ceiling makes it unsuitable for RF or fast digital logic
• Single-output layout lacks a second synchronized channel
• Vertical bit resolution and sample rate are unstated

8

FG-200 DDS Function Signal Generator 0.01Hz -500Khz Frequency Counter Signal

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  8.4
• Brand
  Cywhrvzsf

Key specs2

Sub-Hertz Range

0.01Hz to 500KHz

Module Waveform Types

• Sine waveform output
• Square waveform output
• Sawtooth waveform output

Pros & cons32

Pros

• Extended low end reaches down to 0.01Hz for ultra-slow sensor emulation
• Generates sine, square, and sawtooth waveforms directly from a compact module
• Includes an onboard frequency counter function to check external signals

Cons

• 500KHz upper limit cannot drive high-frequency microcontroller circuits
• Modular form factor lacks front-panel dial controls found on bench instruments

9

Rigol DG822 Function/Arbitrary Waveform Generator,25MHz Maximum Output Frequency,125Msa/s,16bits,2 Output Channel,Built-in

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  8.3
• Brand
  Rigol

Key specs2

Vertical Amplitude Precision

16-bit resolution

Preloaded Waveform Library

Includes 160 pre-programmed arbitrary waveforms to simulate complex circuit conditions quickly.

Pros & cons42

Pros

• 16-bit vertical resolution delivers high amplitude accuracy and minimal quantization noise
• Preloaded with 160 arbitrary waveform types for rapid circuit evaluation
• Dual output channels allow synchronized multi-signal generation
• 125MSa/s sampling rate supports consistent waveform reproduction up to 25MHz

Cons

• 25MHz maximum frequency does not cover fast RF or high-speed clock applications
• Arbitrary memory point depth is not detailed on the product title

10

Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display

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  8.2
• Brand
  Seesii

Key specs2

Dual-Channel Sampling Rate

200MSa/s

Built-In Measurement Utility

Features an integrated frequency meter alongside dual signal generation channels.

Pros & cons42

Pros

• 60MHz bandwidth accommodates medium-speed microcontrollers and RF stages
• 200MSa/s sampling speed maintains waveform shape fidelity across frequencies
• Dual-channel output supports concurrent two-path circuit excitation
• Built-in frequency meter tracks external line frequencies on the integrated LCD

Cons

• Vertical bit depth is omitted from the specification list
• Arbitrary point memory capacity needs verification before programming complex shapes

11

SIGLENT SDG6022X Function/Arbitrary Waveform Generator Signal Generator Bandwidth 200 MHz

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  8.1
• Brand
  Siglent

Key specs2

High-Frequency Lab Ceiling

200MHz

Wideband Signal Generation

Delivers up to 200MHz output bandwidth for demanding RF, communications, and digital logic benches.

Pros & cons32

Pros

• 200MHz bandwidth provides ample headroom for high-frequency RF and clock designs
• Benchtop arbitrary waveform capability generates specialized high-speed pulses
• Robust professional chassis fits standard laboratory equipment stacks

Cons

• Sampling rate and vertical bit depth are unstated on this specific listing
• 200MHz capability exceeds the needs of basic low-frequency audio development

12

ET3320C 20MHz Dual-Channel Function/Arbitrary Waveform Generator, DDS Signal Generator with

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  7.3
• Brand
  wellmeter

Key specs2

Waveform Memory Depth

8K memory

Modulation Modes

• Analog modes: AM, FM, and PM
• Digital keying: ASK, FSK, and PSK
• Sweep and burst triggering

Pros & cons42

Pros

• Wide modulation selection including AM, FM, PM, ASK, FSK, and PSK
• 200MSa/s sampling rate combined with 8K memory depth retains waveform fidelity
• Supports sweep and burst modes for analyzing filters and component responses
• USB interface enables computer connectivity for automated bench routines

Cons

• 20MHz maximum bandwidth restricts evaluation of higher-speed RF systems
• 2.4-inch display is compact compared to larger benchtop screens

Last update on 2026-10-17 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

How much bandwidth and sampling speed does your lab bench actually need?

Match the generator bandwidth directly to the operational frequency of your circuits to avoid buying unnecessary headroom. Basic signal work can rely on compact hardware like the FG-100 DDS spanning 1HZ-500KHz or the FG-200 DDS covering 0.01Hz -500Khz. General lab prototyping typically requires higher ranges, from 20MHz on the ET3320C, 25 MHz on the Rigol DG1022Z and Rigol DG822, 30MHz on the Rigol DG1032Z, 35MHz on the OWON DGE2035, 40 MHz on the Siglent SDG2042X, 60MHz on the Seesii, up to 70MHz or 200 MHz on the SIGLENT SDG6022X.

Sampling rate directly impacts how cleanly high-frequency details are constructed, with available hardware offering 125Msa/s on the Rigol DG822, 125MSa/s on the OWON DGE2035, 200MSa/s on the ET3320C and Seesii, and up to 300MSa/s on dual-channel 70MHz units. Review your highest clock speeds and verify manufacturer datasheets before selecting a frequency tier.

When should you choose a dual-channel function generator over a single output?

Choose a dual-channel generator whenever your lab procedures require differential signaling, I/Q signal simulation, or synchronized clock pulses. Units with two channels, such as the Rigol DG1022Z, Rigol DG822, OWON DGE2035, and GuliTech FY3200S, let you drive two circuit nodes simultaneously while maintaining precise phase relationships between channels.

A second output also allows you to stimulate a circuit on channel one while using channel two as an external reference or trigger source. If your bench workload is limited to single-ended audio signals or standalone calibration pulses, a single-channel unit suffices, but dual-channel designs prevent the need for separate signal sources.

What vertical resolution is required to prevent waveform distortion?

Vertical resolution of 14-bit or 16bits is recommended to minimize quantization error and avoid harmonic distortion in sensitive analog analysis. Hardware with 14-bit resolution, including the OWON DGE2035 and dual-channel 70MHz units, divides the voltage range into fine voltage steps that produce smooth sine and arbitrary contours.

Instruments featuring 16bits, such as the Rigol DG822, provide tighter amplitude control than standard 14-bit architectures, significantly reducing unwanted spectral spurs. When shopping for audio prototyping or sensor simulation where phantom circuit glitches ruin data, verify the listed bit depth in the generator specifications.

Which modulation capabilities should you look for on bench signal generators?

Verify that the unit includes hardware-level support for your required carrier schemes, such as AM, FM, and digital frequency shift keying. The OWON DGE2035 provides AM/FM/FSK modulation, while gear like the ET3320C supports AM/FM/PM/Ask/FSK/PSK modulation alongside sweep and burst modes.

Memory depth is equally critical for storing complex modulated profiles, such as the 8K memory found on the ET3320C, or preprogrammed libraries like the built-in 160 kinds of arbitrary waveforms on the Rigol DG822. Check the product manual to confirm whether your necessary modulation mode can be driven by internal and external modulation sources.

Can compact DDS modules replace standard benchtop function generators?

No, compact DDS modules cannot fully replace benchtop function generators because they lack high-speed arbitrary memory, extensive modulation, and high output bandwidth. Units like the FG-100 DDS and FG-200 DDS generate sine, square, and sawtooth waveforms up to 500KHz, which works well for portable field repairs or low-speed circuit checks.

Technicians working on mobile setups away from AC wall outlets often run small DC hardware using portable power banks for remote work to avoid dirty utility power. But for formal lab benches requiring high-frequency analysis up to 200 MHz, dual-channel alignment, and deep arbitrary memory, standard bench instruments are necessary.

How do screen size and physical controls influence bench productivity?

A clear display allows technicians to monitor frequency, offset, and duty cycle simultaneously without navigating buried submenus during live circuit adjustments. Dedicated interfaces range from the 2.4" TFT LCD on the ET3320C to the larger 3.6” TFT LCD on the OWON DGE2035, providing immediate visual confirmation of signal shapes.

Seeing real-time parameter feedback prevents accidental overvoltage injection that could damage delicate semiconductors during active prototyping. Confirm the display dimensions and interface layout on the product listing before purchasing to ensure smooth bench operation.