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Koolertron 60MHz High Precision DDS Signal Generator Counter,Upgraded Dual-Channel Arbitrary Waveform Function Generator Frequency Meter 266MSa/s (60MHz)

4.0 4.0 out of 5 stars 159 ratings
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  • Arbitrary Waveform Generator adopts large scale FPGA integrated circuit and high speed MCU microprocessor. The internal circuit adopts active crystal oscillator as benchmark. So the signal stability is greatly strengthened.
  • Using Dual-channel DDS signal and TTL electric level output to generate precise, stable, low distortion output signal. includes Sine, Square, Triangle, Pulse, Partial Sine, CMOS, DC level, Half-wave, Full-Wave, Pos-Ladder, Neg-Ladder, Noise, Exponential Rise, Exponential Fall, Tone, Sine Pulse, Lorentz Pulse, and 60 kinds user defined waveform etc. each channel can be independently set the parameters.
  • 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.
  • Storage feature: You can store 100 groups instrument state parameters set by the user, can be called up to Reproduce. Frequency output of Sine wave can be up to 60MHz. 266MSa/s sampling rate. It has 60 positions for saving user-defined waveform. Waveform Length of each one is 2048 and vertical resolution is 14 bits
  • This Signal Generator is the ideal instrument for electronic engineering, laboratories, production lines, teaching and scientific research.
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Customer reviews

4 out of 5 stars
159 global ratings

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Customers say

Customers are satisfied with the product's functionality, value for money, and ease of use. They find it easy to set up and use, with a straightforward interface and detailed manual. The build quality is good, making it reliable and durable. Customers appreciate the clean signals from 10mV to 5V sine at 60-200KHz. Overall, customers are pleased with the performance and overall value for money. However, opinions differ on the output.

AI-generated from the text of customer reviews

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FunctionalityValue for moneyEase of useBuild qualitySignal qualityAccuracyFeaturesOutput
46 customers mention "Functionality"39 positive7 negative

Customers appreciate the product's functionality and accuracy. They find it easy to use, with a good signal generator that creates precise waveforms. The sweep function works well, and the overall performance is satisfactory.

"The signal generator worked great (once I figured out the cable problem) and is easy to use...." Read more

"...If you're looking for a good, stable, well healed arbitrary waveform generator for general purpose use, don't pass this one up!..." Read more

"...It was very portable, easy to use and worked perfectly. The only feature I wish it had was "battery powered"...." Read more

"...for about a month now and have been pleased with the features and performance, especially for the cost...." Read more

33 customers mention "Value for money"33 positive0 negative

Customers like the product's value for money. They say it's a good unit for the price and well worth it.

"I really like the features and price of this unit. Unfortunately, they have quality issues. When I got the unit, one button wouldn't work...." Read more

"...I’m about to test the functions and if it works this is pretty nice for the money. Are use the sharpie pen to initial what the port plugs do." Read more

"...rebranded Juntek JDS2900-60M. I have found it to be a good value for the amount of money spent, but don't expect it to outperform devices that cost..." Read more

"...I have a dud, but this thing generates good signal with an awesome range for the price...." Read more

25 customers mention "Ease of use"21 positive4 negative

Customers find the product easy to use and convenient. They find the English manual helpful, with a detailed explanation of the interface and computer connection. The device is simple to set up and works well for their needs. It's a good value for the cost, and a perfect unit for techs on the go.

"...worked great (once I figured out the cable problem) and is easy to use...." Read more

"This unit is extremely intuitive to use. I was generating signals in not time. It is stable...." Read more

"...It was very portable, easy to use and worked perfectly. The only feature I wish it had was "battery powered"...." Read more

"...The interface is workable. The form factor is a little awkward. If you Google around for it you can find the English manual fairly easily...." Read more

22 customers mention "Build quality"22 positive0 negative

Customers appreciate the product's build quality. They find it reliable, versatile, and easy to use. The device is rugged and stable, providing good value for the cost.

"...Third photo shows what’s inside the unit - impressive! Definitely not just a souped up 555 timer!" Read more

"...If you're looking for a good, stable, well healed arbitrary waveform generator for general purpose use, don't pass this one up!..." Read more

"...I was generating signals in not time. It is stable...." Read more

"...But at the price I found it useful and reliable and worth investing in...." Read more

13 customers mention "Signal quality"13 positive0 negative

Customers like the signal quality of this portable signal generator. It includes pulse and sweep functionality, is great for low-frequency signals, and is compact for on-the-go uses. They say it's easy to use and stable, generating clean signals from 10mV to 5V sine at 60-200KHz.

"...Now I can do frequency sweeps of quadature encoder signals - Exactly what I needed!..." Read more

"This unit is extremely intuitive to use. I was generating signals in not time. It is stable...." Read more

"...It was very portable, easy to use and worked perfectly. The only feature I wish it had was "battery powered"...." Read more

"Could be I have a dud, but this thing generates good signal with an awesome range for the price...." Read more

12 customers mention "Accuracy"12 positive0 negative

Customers are satisfied with the accuracy of the product. They find the signals clean and accurate, with perfect signal parameters. The product is stable, producing a variety of waveforms over a wide range of frequencies.

"...Frequencies are dead on according to the scope and DMM hardware counters...." Read more

"...Ran it through it's paces against my 200MHz DSO and it is accurate, waveforms are perfect, and output levels (into 50ohm load) are right dead on...." Read more

"...I was generating signals in not time. It is stable. I measured the frequency stability with my oscilloscope and frequency counter function on my..." Read more

"...Signals are accurate and appear to be very clean. There are a few quirks associated with this device that can be overcome or dealt with...." Read more

8 customers mention "Features"8 positive0 negative

Customers appreciate the product's features. They find it has useful capabilities for basic audio tasks like 20-20KHz, and a convenient variety of waveforms over a wide range. The pulse burst and frequency sweep functions are mentioned as nice touches.

"I've been using this for about a month now and have been pleased with the features and performance, especially for the cost...." Read more

"easy to use, versatile features. moved the piezo beeper out of the way and mounted 2 RCA jacks for chan 1 output..." Read more

"...The extra features such as pulse burst and frequency sweep are nice touches." Read more

"The unit provides a conveniently accessible , useful variety of waveforms over a large range of frequencies." Read more

10 customers mention "Output"4 positive6 negative

Customers have different views on the output of the product. Some say it has a 60 MHz frequency range and accurate waveforms and levels, down to 3.75 Hz. Others report issues with frequencies below 1000 Hz, glitchy output at 1V-700 mV, and display changes while signal doesn't change.

"...I've found that the frequency output will shift fairly substantially based on temperature, as much as 2 or 3 PPM...." Read more

"...my 200MHz DSO and it is accurate, waveforms are perfect, and output levels (into 50ohm load) are right dead on...." Read more

"...be just my unit, but I doubt it since the display changes and the signal does not...." Read more

"...I am very pleased with the function and accuracy. This was accurate down to 3.75 Hz ( I did not tear lower)...." Read more

Good value for money, but accuracy is meh
3 out of 5 stars
Good value for money, but accuracy is meh
This device is a rebranded Juntek JDS2900-60M. I have found it to be a good value for the amount of money spent, but don't expect it to outperform devices that cost 3x as much. The interface is workable. The form factor is a little awkward.If you Google around for it you can find the English manual fairly easily. The manual is detailed enough.Comparing the 10MHz output to my GPSDO, it seems the overall accuracy of my unit is around 5PPM, which is better than the datasheet which lists +/- 20PPM. I've found that the frequency output will shift fairly substantially based on temperature, as much as 2 or 3 PPM.I'm sure it is just using a standard non-temperature-compensated crystal oscillator instead of a TXCO. There doesn't appear to be any way to calibrate the frequency of the device. There is plenty of room inside the case for a TXCO if you wanted to add one. The only crystal I could find in the device was the one on the top board, and it appears to be 8 MHz. I'm suspicious that there is not a crystal on the lower board, but I cannot find one.It has a USB connector, but cannot be powered via USB, which is annoying. The required power supply is 5v.
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Top reviews from the United States

  • Laurie A. Rolan
    5.0 out of 5 stars Works great. Good value.
    Reviewed in the United States on August 16, 2019
    Verified Purchase
    The media could not be loaded.
    I bought this unit to simulate frequency feedbacks from industrial controls using the frequency sweep function, and to use the dual channels to simulate quadature encoder feedbacks.

    The attached video shows the sweep in operation. It took a few minutes to figure out how to configure it, but not too bad.

    The second photo shows the unit set up to generate an encoder-like feedback. The main disappointment is that there does not seem to be a way to make the second channel track the frequency of the first channel, so each one needs to be changed manually to simulate a different encoder speed properly.
    [Update] - Found how to make the two channels keep same frequency/ amplitude/ wave shape/ offset/ phase shift as selected - it is in the system menu. Now I can do frequency sweeps of quadature encoder signals - Exactly what I needed!

    Frequencies are dead on according to the scope and DMM hardware counters. The voltages on the scope show a bit high, but then again, scopes are not made for precision voltage measurements. I set up the generator for a 60Hz sine and measured the output RMS voltage. Converting to peak-to-peak gave a very close match to the generator voltage setting.

    Waveforms look to have minimal distortion all of the way up to 15MHz maximum frequency of the unit I bought.

    Third photo shows what’s inside the unit - impressive! Definitely not just a souped up 555 timer!
    Customer image
    Laurie A. Rolan
    5.0 out of 5 stars Works great. Good value.
    Reviewed in the United States on August 16, 2019
    I bought this unit to simulate frequency feedbacks from industrial controls using the frequency sweep function, and to use the dual channels to simulate quadature encoder feedbacks.

    The attached video shows the sweep in operation. It took a few minutes to figure out how to configure it, but not too bad.

    The second photo shows the unit set up to generate an encoder-like feedback. The main disappointment is that there does not seem to be a way to make the second channel track the frequency of the first channel, so each one needs to be changed manually to simulate a different encoder speed properly.
    [Update] - Found how to make the two channels keep same frequency/ amplitude/ wave shape/ offset/ phase shift as selected - it is in the system menu. Now I can do frequency sweeps of quadature encoder signals - Exactly what I needed!

    Frequencies are dead on according to the scope and DMM hardware counters. The voltages on the scope show a bit high, but then again, scopes are not made for precision voltage measurements. I set up the generator for a 60Hz sine and measured the output RMS voltage. Converting to peak-to-peak gave a very close match to the generator voltage setting.

    Waveforms look to have minimal distortion all of the way up to 15MHz maximum frequency of the unit I bought.

    Third photo shows what’s inside the unit - impressive! Definitely not just a souped up 555 timer!
    Images in this review
    Customer image Customer image Customer image
    Customer imageCustomer imageCustomer image
    22 people found this helpful
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  • [Redacted]
    4.0 out of 5 stars The device worked great, cords not so much
    Reviewed in the United States on February 23, 2020
    Verified Purchase
    The signal generator worked great (once I figured out the cable problem) and is easy to use. There's a pretty obnoxious beep when you press buttons, but it can be disabled in the system menu.

    The only downside was that one of the Q9 cables was faulty, and it took me a while fiddling with the signal generator and my oscilloscope to realize that was the problem. They do provide two though, and the other cable works fine, so this might be a one-off issue.
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  • RBNye
    5.0 out of 5 stars Very high value for a little money!
    Reviewed in the United States on April 8, 2019
    Verified Purchase
    Purchased this to fill some needed equipment on my test bench. I spent a lot of years using high-end professional equipment costing way more. So my expectations were that this would do "the basics" and maybe be good enough to use on my hobby bench.
    Boy! Was I wrong. This little gem does about everything and more. Ran it through it's paces against my 200MHz DSO and it is accurate, waveforms are perfect, and output levels (into 50ohm load) are right dead on. As a bonus, I configured an AM modulation waveform set - yup that worked perfectly, something I didn't expect!
    There aren't all the features you find in the equipment costing $1,000's more - but I'm not doing that kind of work on my hobby bench either.
    If you're looking for a good, stable, well healed arbitrary waveform generator for general purpose use, don't pass this one up!
    BTW: The delivery was promised in a range of dates - it came on the earliest date! The seller followed up after deliver to ensure the package arrived and to ensure everything was as promised. That kind of dedication to the customer goes a long way in the digital marketplace. Thank you Kastonecorp!
    10 people found this helpful
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  • RLR
    5.0 out of 5 stars Great Value
    Reviewed in the United States on June 5, 2020
    Verified Purchase
    This unit is extremely intuitive to use. I was generating signals in not time. It is stable. I measured the frequency stability with my oscilloscope and frequency counter function on my Fluke DMM. I am very pleased with the purchase.
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  • R. Frazier
    1.0 out of 5 stars Nice Features. Failed Quickly. Returned. Don't Buy It.
    Reviewed in the United States on March 6, 2021
    Verified Purchase
    I really like the features and price of this unit. Unfortunately, they have quality issues. When I got the unit, one button wouldn't work. I pressed it a number of times and it started working. I was fine for a couple of weeks. I've been using the unit extensively to generate a variable set of pulses for an experiment. You are COMPLETELY dependent on the control knob to set numbers up and down. Unfortunately, the button that was originally flaky is acting up again. Also, the control knob has become unreliable within 2 weeks of use. Sometimes turning it won't change a number. Sometimes it changes it multiple times per click, which it isn't supposed to. Sometimes turning the knob up actually changes the number down, or vice versa, which it isn't supposed to. Even though I really like the features, I'm returning the unit. Will have to look for alternate options, maybe from Rigol, Siglent, GW Instek, etc. although they cost more. If the unit were reliable, I'd love to keep it.
    One person found this helpful
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  • Wizard #49
    3.0 out of 5 stars Good portable signal generator including pulse and sweep functionality, but inscrutable interface!
    Reviewed in the United States on September 22, 2020
    Verified Purchase
    You can do almost anything you want to do across a wide range of generating test signals with this unit.

    HOWEVER the interface took a lot of getting accustomed to for me and even then it is not optimal. I had to take extensive notes create my own draft Operation Manual since the interface is pretty incredibly non-intuitive, inconsistent, and NON-USER Friendly. What is called "Usability" and consistent design and control is missing from an otherwise useful product. (BTW, my background includes Usability and Interface Design so I'm not blowing smoke here :-) But at the price I found it useful and reliable and worth investing in. And this issue of poor quality documentation is common across many otherwise technically good products coming out of China.

    I also have the exact same functionality unit in a version that comes in a tan plastic bench model case with tilting handle for carrying and propping up on a bench. From what I can tell there is not a single bit of difference between the capability and functionality of the two units other than the case and with the smaller one you have to come up with your own source of 5 VDC which is no problem in most cases.

    You need to feed it 5 VDC from either one of the USB Lithium Power Packs or a 5VDC wallwart supply with COAXIAL connector. With a custom cable I fabricated this unit ran continuously over 24 hours on a 20,000 mAH USB Power Pak.
    4 people found this helpful
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