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|Key Features||Frequency Range||Sine Wave||
Normal Modes: 0Hz~25MHz
|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 Amplitude Resolution||12 Bits|
|The Min. Frequency Resolution||10mHz|
|Amplitude Range(Peak to Peak)||
1mVp-p (-20dB Attenuation)
10mVp-p (No Attenuation)
|Offset Range||-120%~120% (The ratio of bias voltage and signal amplitude)|
|Sine Wave||Harmonic Arrived System||40dBc(<1MHz); 35dBc(1MHz~20MHz)|
|Square Wave||Lifting Along Time||≤20ns|
|Duty Cycle Adjustment Range||0%~99.9%|
|TTL||Lifting Along Time||≤20ns|
|Scan||Scan Mode||Linear Sweep, Log Sweep|
|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
|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)|
|Interface||Interface Mode||Using USB to Serial Interface|
|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|
Questions & Answers
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based on 26 Customer Reviews
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March 13, 2018
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.
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 eevblog.com 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.
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.
By E. Nusbaum
November 3, 2017
By Aaron M. Johnson
November 1, 2017
By Ralph Braun
October 31, 2017
October 30, 2017
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.
By Edward Zukowski.
October 27, 2017
By Tara P.
October 10, 2017
By TIMOTHY HADLEY
October 6, 2017
By Jesse L.
October 3, 2017
September 20, 2017
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.
August 31, 2017
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.
By Martin Peck
August 28, 2017
By Kimberly N. Marshall
August 23, 2017
By Emily M Lopez
August 1, 2017
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