Updated: 17 Feb 2025

frequency functions

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Updated: 17 Feb 2025

#1

Best Choice
Goupchn Programmable DDS Signal Generator 80MHz Dual Channel Arbitrary Waveform Function Generator Frequency Meter 300MSa/s Counter High Precision 3.5inch Screen

9.7

Goupchn

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Main highlights

Voltage Controlled: The frequency, amplitude and duty cycle of the output can be controlled by an external analog voltage signal to achieve voltage-controlled sweeping frequency, sweeping amplitude and sweeping duty cycle, which are widely used in industrial debugging.

Programmable Output: The type of waveform output such as sine wave, square wave, triangle wave, arbitrary wave, output time and output sequence can be freely formulated to realize automatic work.

Firmware Update: Firmware upgrade can be updated at any time to fix bugs, or used for your special customization needs. Press the corresponding soft key to confirm entering the update mode, and perform a one-key firmware upgrade by connecting with the PC software.
#2

Value for Money
Deep Learning for Radio Frequency Automatic Target Recognition

9.6

Artech House Publishers

-17%

-17%
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#3
A Dictionary of High Frequency Function Words in Literary Chinese

9.5

Routledge
#4
A Frequency Dictionary of Spanish (Routledge Frequency Dictionaries)

9.3

Routledge

-31%

-31%
#5
Signal Generator Kit, XR2206 Precise Function Signal Generator Frequency Module DIY Kit Sine Triangle Square Output Adjustable 1Hz-1MHz, 9-12V Direct Current Input(1 Piece)

9.2

Weewooday

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Main highlights

Sine wave parameters:Amplitude: 0-3V at 9V DC input; Distortion: less than 1% (at 1KHz); Flatness: +0.05dB 1Hz - 100kHz

Parameters: Voltage Supply: 9-12V DC Input; Waveforms: Square, Sine, Triangle; Impedance: 600 Ohm + 10%; Frequency: 1Hz-1MHz; Amplitude: 0-3V at 9V DC; InputDistortion: less than 1% (at 1KHz); Flatness: +0.05dB 1Hz - 100kaHz

Good precision: the XR2206 function signal generator is precise, with a transparent case box shell for good assemble; Amplitude: 0-3V at 9V DC input; Distortion: less than 1% (at 1KHz); Flatness: +0.05dB 1Hz - 100kHz
#6
Koolertron Upgraded 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (15MHz)

9.0

Koolertron

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Main highlights

With linear sweep(Max. up to 999.9s) and logarithmic frequency sweep functions.Has a frequency measurement, period measurement, positive and negative pulse width measurement and counting function.

Using Dual-channel DDS signal and TTL electric level output to generate precise, stable, low distortion output signal. includes Sine wave, Square wave, Triangle wave, Saw toothwave, Pulse wave, white noise, user-defined waveform etc. each channel can be independently set the parameters.

Arbitrary Waveform Generator adopts large scale FPGA integrated circuit and high-speed MCU microprocessor. The internal circuit adopts the active crystal oscillator as the benchmark. So the signal stability is greatly strengthened.
#7
Portable Tinysa Spectrum Analyzer, AURSINC V0.3.1 Handheld Frequency Analyzer, Signal Generator 100kHz to 960MHz MF/HF/VHF UHF Input ESD Protected Function with 2.8 inch Touchscreen

8.9

AURSINC

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Main highlights

[Upgraded Version] AURSINC Tinysa spectrum analyzer produced by Hugen (tinysa .org), with hardware V0.3.1. The firmware of the tinySA can be updated, for newest firmware version update, please refer to: tinysa .org. The version info displayed indicates "ESD Protection" with a diode to improve stability, sensitivity, anti-static level, and longevity

[Frequency Range] The tiny sa spectrum analyzer with two inputs, high quality MF/HF/VHF input for 0.1MHZ-350MHz, lesser quality UHF input for 240MHz-960MHz. Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz. The tinysa includes all the components of a traditional heterodyne swept spectrum analyzer, with a color display showing 290 scan points covering up to the full low or high frequency range

[Built-in Calibration Signal Generator] When not used as Spectrum Analyzer it can be used as Signal Generator, MF/HF/VHF sinus output between 0.1MHZ-350MHz, UHF square wave output between 240MHz-960MHz. Built-in calibration signal generator enables automatic self-test and low input calibration
#8
Statistical Signal Processing: Frequency Estimation

8.7

Springer

-22%

-22%
#9
Professional Upgraded 15MHz DDS Signal Generator Counter, Seesii 2.4Inch LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform FG-615 Function Generator Frequency Meter

8.6

Seesii

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Why we love it

Highly stable signal with upgraded FPGA and MCU.

Stores 99 custom settings and 60 waveforms.

Precise dual-channel output with low distortion.

Main highlights

Upgraded Signal Stability
The Seesii Dual-channel DDS waveform generator uses FPGA and MCU technology with an active crystal oscillator, ensuring enhanced signal stability and precision.

Ideal for Hobbyists and Professionals
Perfect for electronic engineering, laboratories, production lines, teaching, and scientific research due to its precise and stable signal generation capabilities.

Highly Praised Customer Support
Customers appreciate the responsive and effective product support, especially in addressing issues like power supply replacements and operational guidance.
#10
DOMINTY Function Generator AC100-240V FY6900 60MHz Double Channel DDS Function Arbitrary Waveform Signal Generator Frequency Meter 250MSa/s Sine Square/Triangle/Pulse/Sawtooth Wave/Staircase Wave

8.4

DOMINTY

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Main highlights

【SWEEP FUNCTION & SWEEP TYPES】-----Sweep Function: It can sweep 4 properties of signals including frequency, amplitude, offset and duty cycle; It has Linear and Logarithm two sweep types; 0.01S~999.99S sweep time; Up, Down and roundtrip sweep directions

【INTUITIVE & CONVENIENT OPERATION】-----The display interface uses a 2.4-inch TFT color LCD screen, making operation more intuitive and convenient.The instrument adopt the Direct Digital Synthesizer (DDS) technology and provide stable, precise, pure and low distortion signals.Abundant shortcut keys and graphical user interface simplifies every operation, which makes it easy to operate

【IMPROVED INTERFERENCE IMMUNITY】-----Surface mounting technology improves interference immunity and operational life span.The instrument uses 14-bit high D/A converter chip (5Vpp output quantization error is less than 1mV), 250MSa/s sample rate, 14bits vertical resolution.Various modulation types: AM, FM, PM, ASK, FSK and PSK modulations

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frequency functions

Goupchn Programmable DDS Signal Generator 80MHz Dual Channel Arbitrary Waveform Function Generator Frequency Meter 300MSa/s Counter High Precision 3.5inch Screen

9.7

Main highlights

Deep Learning for Radio Frequency Automatic Target Recognition

9.6

A Dictionary of High Frequency Function Words in Literary Chinese

9.5

A Frequency Dictionary of Spanish (Routledge Frequency Dictionaries)

9.3

Signal Generator Kit, XR2206 Precise Function Signal Generator Frequency Module DIY Kit Sine Triangle Square Output Adjustable 1Hz-1MHz, 9-12V Direct Current Input(1 Piece)

9.2

Main highlights

Koolertron Upgraded 15MHz DDS Signal Generator Counter,High Precision Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 200MSa/s (15MHz)

9.0

Main highlights

Portable Tinysa Spectrum Analyzer, AURSINC V0.3.1 Handheld Frequency Analyzer, Signal Generator 100kHz to 960MHz MF/HF/VHF UHF Input ESD Protected Function with 2.8 inch Touchscreen

8.9

Main highlights

Statistical Signal Processing: Frequency Estimation

8.7

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

8.6

Why we love it

Main highlights

DOMINTY Function Generator AC100-240V FY6900 60MHz Double Channel DDS Function Arbitrary Waveform Signal Generator Frequency Meter 250MSa/s Sine Square/Triangle/Pulse/Sawtooth Wave/Staircase Wave

8.4

Main highlights

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Frequency

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