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KKmoon High Precision Digital DDS Dual-channel Signal Source Generator Arbitrary Waveform Frequency Meter 200MSa/s 25MHz

KKmoon High Precision Digital DDS Dual-channel Signal Source Generator Arbitrary Waveform Frequency Meter 200MSa/s 25MHz

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Arbitrary waveform DDS signal generator is a multi-functional signal generator with high precision and high performance. It adopts large scale of FPGA integrated circuits, high-speed MCU microprocessor and SMT in the inner circuit, which can greatly improve the anti-interference and lifetime of the instrument. The LCD display is divided into two lines: the top line shows the current frequency and the following line displays additional parameters or functions. This instrument is of great advantage in generating signal, scanning waveform, measuring parameters, etc. It's an ideal testing or measuring instrument for electronics engineer, electronic laboratory, teaching and researching.
Can output arbitrary waveforms and conventional function waveforms(sine/triangle/square/sawtooth wave and TTL signal).
All functions are digitally controlled, precise and stable.
Dual-channel output, can work in sync, phase difference is adjustable.
With linear sweep(Max. up to 999s) and logarithmic frequency sweep functions.
Signal of both channels has built-in sophisticated -20dB attenuator in order to reach the minimum amplitude resolution 1mV.
With 120% ~ + 120% DC bias function.
4 TTL output(phase difference is adjustable).
Has a frequency measurement, period measurement, positive and negative pulse width measurement, duty cycle measurements and counting function.
With USB interface, after the connection with PC, the PC can be used to control the instrument.

Project Parameters
Key Features Frequency Range Sine Wave

Normal Modes: 0Hz~25MHz

Square Wave 0Hz~6MHz
Triangle Wave 0Hz~6MHz
Sawtooth Wave 0Hz~6MHz
Arbitrary Waveform 0Hz~6MHz
TTL Digital Signal Wave 0Hz~6MHz
Output Modulation Frequency Sweep
Waveform Types Sine/Triangle/Square/Lifting Sawtooth Wave, CMOS Digital Signal Wave and Arbitrary Waveform
Waveform Length 2048Points
Sampling Rate 200MSa/s
Waveform Amplitude Resolution 12 Bits
The Min. Frequency Resolution 10mHz
Frequency Error +/-5*10^(-6)
Frequency Stability +/-1*10^(-6)
Amplitude Range(Peak to Peak)


Output Impedance 50Ω(+/-10%)
Amplitude Resolution

1mVp-p (-20dB Attenuation)

10mVp-p (No Attenuation)

Offset Range -120%~120% (The ratio of bias voltage and signal amplitude)
Bias Resolution 1%
Phase Range 0~359°
Phase Resolution
Sine Wave Harmonic Arrived System 40dBc(<1MHz); 35dBc(1MHz~20MHz)
Distortion <0.8%(20Hz~20KHz)
Square Wave Lifting Along Time ≤20ns
Overshoot ≤10%
Duty Cycle Adjustment Range 0%~99.9%
TTL Lifting Along Time ≤20ns
Low Level <0.3V
High Level 1V~7.5V
Arbitrary Waveform Quantity 16
Memory Depth/Group 1KB/16
Scan Scan Mode Linear Sweep, Log Sweep
Scan Time 1s-999s
Scan Range It is determined by the sweep parameter settings
External Measurements Frequency Measuring Range

GATE-TIME=10S 0.1Hz - 60MHz

GATE-TIME=1S 1Hz - 60MHz

GATE-TIME=0.1S 10Hz - 60MHz

GATE-TIME=0.01S 100Hz - 60MHz

Input Voltage Range

Counting Range 0~4294967295
Counting Manually
Positive and Negative Pulse Width Measurement 10ns Resolution, the Max. Measurable 10s
Periodic Measurement 20ns Resolution, the Max. Measurable 20s
Duty Cycle Measurement 0.1% Resolution, Measuring Range from 0.1%~99.9%
Source Selection 1. Ext. IN Input(AC Signal) ; 2. TTL-IN Input(Digital Signal)
Memory Quantity 10
Location M0~M9
Interface Interface Mode Using USB to Serial Interface
Communication Rate 57600bps
Protocol Using the Command Line, the Agreement Public
Power Supply US Plug / EU Plug (Optional); Input AC 100-240V Output DC 5V 
Size 19.5 * 17.5 * 7cm / 7.67 * 6.9 * 2.75in
Weight 525g / 18.54oz
Package Size 24 * 21 * 9.5cm / 9.45 * 8.3 * 3.74in (L * W * H)
Package Weight 950g / 33.51oz

Package List:
1 * Signal Source Generator
1 * USB Cable
1 * CD
1 * TTL Expansion Board
1 * Power Adapter
2 * BNC Clips Cable


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Customer Reviews

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based on 26 Customer Reviews

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  • By g***j

    March 13, 2018

    Item as described. Good seller. Recommended!

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  • By Radio Guy

    November 27, 2017

    This is an inexpensive signal generator that offers a lot for the low price. While expensive test gear will outperform this - for many uses this generator is really handy. Before I purchased this I checked out videos on you tube and was generally impressed with what you could do with an inexpensive piece of test gear. Some of the videos showed some ring on a square wave from the generator. The model I received did not have this problem so I suspect that the generator design may have been touched up to take care of this small issue. Overall the generator give the hobbyist a lot of capability. For my use it's been great.

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  • By AUgie the Prospector

    November 19, 2017

    All I've done is try out the built-in capabilities, just to be sure it wasn't DOA, and was a version with the advertised features. Everything works as expected. Any shortcomings in signal quality are minor and expected given the price point. I connected it to the Siglent SDS1102CML digital scope for these tests, and was reminded how easy that oscilloscope is to use as well. First, anyone interested in learning about this signal generator will find a lot more online about the model MHS-5200A, which appears to be the exact same unit, under a different name. There are reviews and upgrades, including fixing the over-bright display (a minor issue) and correcting some of the distortion in the sine wave output (how important this is depends on how spectrally pure an output you need). There is also some aftermarket software hobbyists have developed for uploading arbitrary waveforms, if the supplied software doesn't meet your needs. Some people have even managed to "close the loop" and download waveforms captured on their digital storage scopes (like the one I use) into their computer, edit them, and then upload them into the signal generator. This is way more than I need - I'll likely never attach it to a computer - but some users of this device will doubtless want to follow these brave hardware hackers' lead. A nice English manual is available from one of the serious hobbyist sites, and maybe other places too. It was written by an English-speaking hobbyist based on the Chinese manual and online sources - it covers all the basic internal functions with clarity. I don't like posting links, so just Google it yourself. Search for MHS5200.pdf. Follow a result on about reverse engineering the serial protocol, look at post number 18 and you'll see a link to the pdf file on github. It scans clean of malware and is very clearly written. However you find it, it will be useful. While I didn't have my scope analyze for spectral purity (see MHS-5200A YouTube videos for that), I did run the generator through its built in paces. As others have noted, the square wave begins losing its crispness much above 1 MHz, and is pretty "round" by the advertised 6 MHz. Sine waves look pretty good all the way to 25 MHz. Locking the two channels works, all the wave shapes work. Adjusting the duty factor of square waves works. Adjusting the relative phases of the two channels works. Sweeping the frequency works as advertised. The input frequency counter works in its various frequency, period, duty factor, etc., modes, including when feeding back one of the output channels into it, set up prior to moving to the signal input part of the menu. (Not that anyone with a modern digital oscilloscope needs this feature.) I didn't test the rear panel TTL inputs or outputs. I also didn't try saving a setup of the controls into one of the internal memories (probably works). Adjusting the amplitude works, but I forgot to try the offset - I'm sure it works too. I noticed that the square wave has a small "back porch" (slight drop in level near the trailing edge), even at low frequencies, but is within the range of expected signal impurities and would just about never be an issue. Amplitudes and frequencies agreed extremely well between the signal generator and my digital scope. Conclusion; This seems to be the exact same device as the more commonly discussed MHS-5200A, and all the features and functions that I tested work as expected (none involving a computer were tried). It is a great value for what it can do and has even more potential when interfaced to a computer, or if modified for greater spectral purity. Amazon seems to be selling, in the KKmoon, an MHS-5200A under a different name, for a very good price. I saw no issues with the build quality or construction of my unit. Finally, I didn't find the controls as hard to fathom as I expected. They can be a little slow to navigate, but with a few minutes use they seemed fairly natural and required no reference to the manual. The English manual did come in handy preventing a lot of guessing at a few points, so I do recommend it highly.

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  • By Mike M

    November 18, 2017

    I was particularly interested in testing two-phase stepper motors. The TTL outputs are perfect for this job. Not only are there two channels but each includes its inverted complement. These four signals are just what's needed to drive a dual H-bridge such as an L298N. Setting the PHASE to 90 degrees creates proper waveforms and turning on the TRACE mode keeps both channels at the same frequency. You can now turn the dial to easily control motor speed. Change the PHASE to 270 degrees to rotate in the opposite direction. The frequency sweep function is handy for ramping up motor speed and testing slew rates. If you have a sensor on your drive train it can be wired to this frequency counter to confirm actual speed. All setups are easily stored in memory for later recall. User interface is better than expected. Build quality is good and the "wall wart" power supply is UL listed for safety. A great buy.

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  • By E. Nusbaum

    November 3, 2017

    Great signal generator for the money, tons of functions and abilities. My only complaint is that at low voltages (>500mv) the signal is pretty noisy on the scope. Otherwise, performs very well.

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  • By Aaron M. Johnson

    November 1, 2017

    The UI is rather clumsy, but it generates all signals I needs for a pretty good price.

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  • By Ralph Braun

    October 31, 2017

    Good for hobby work. Menu takes so getting use to

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  • By I***i

    October 30, 2017

    It works nicely and a am glad the signal is variable.

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  • By Oldguy

    October 29, 2017

    Seems to be quite accurate, checked with my Digital Oscope. It comes with a piece of software for Windows. With the software, connected through USB to a Windows computer, it is a lot easier to set parameters. On the other hand, the computer has to be running for the software to be used, duh. Of course! There is however a flaw / bug in the device firmware during power on. At times when powered on, the display is corrupted and so are the control functions. Power off and on again has fixed it in the past. Otherwise, at the price to performance ratio, it is quite usable for some bench projects. I don't know why it sometimes doesn't initializes at first power on. From my own experience in programming micro controller, I guess there isn't enough delay to initialize the micro.

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  • By Edward Zukowski.

    October 27, 2017

    Provides stable signals.So far,it is doing everything that I need it to do for the radio projects that I'm working on.Like it.

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  • By Tara P.

    October 10, 2017

    They are not joking about how precise this generator is.

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    October 6, 2017

    It's a lot of machine for the money. Basic to a degree but all you need for a regular engineer

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  • By Jesse L.

    October 3, 2017

    Perfect, so far works as ecpectec and with precision, cheap and looks well in my lab

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  • By l***x

    September 20, 2017

    It has a few minor issues with signal quality at very low frequencies or very high duty cycles, but nothing terrible. You probably aren't going to find a better dual channel DDS signal generator for this price.

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  • By Luhan

    September 5, 2017

    What an amazing use of micro-controllers for direct signal generation. A bit cheesy use of just 6 click buttons, but a real nice encoder knob for the many adjustable parameters and features up the wahzoo.. Locating the (large) knob at the far right is the best ergonomic location if you ask me. I've been working in electronics since age 13, that's lots of years ago and I know great engineering when I see it.

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  • By Skyler

    August 31, 2017

    Works well in my projects.I’m very pleased with the quality

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  • By Lee Cramer

    August 28, 2017

    Well worth the money. I was considering building a signal generator until I came across this. Rock-solid waveforms right up to 25MHz. UPDATE: Frequency adjustment stopped working today, one week after the return cutoff date. No way to contact seller. UPDATE 2: Several attempts at disconnecting power and rebooting failed to solve the problem. However, after spending a day on the shelf I decided to attempt some troubleshooting. When I powered it up, it was working to specs again.

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  • By Martin Peck

    August 28, 2017

    Works great.

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  • By Kimberly N. Marshall

    August 23, 2017

    Great product as expected.

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  • By Emily M Lopez

    August 1, 2017

    Works well and better than expected.Great value.

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