Professional Upgraded DDS Signal Generator Counter, Seesii 60MHz LCD Display High Precision 200MSa/s Dual-Channel Arbitray Waveform Function Generator Frequency Meter

Purchased to be used in vintage audio repair and test anything with a single path. You will be amazed at how many other uses you can find for this device after owning it for awhile. I mounted this device. on my repair bench next to my telescope and power supply for nearly 3 years. It works just as well today as it did the first day I got it. As a signal generator, this is a great investment.

I am using this to generate signals at specific frequencies with any of several waveshapes. I also use it to measure frequency of externally generated frequencies. It is quick and easy to use. Dual channel certainly helps. HOWEVER - when I measure the output of my precision 10 MHz frequency standard, I find an error in that the Seesi counter indicates a frequency about 12 cycles high. My standard is precise to e1x10-12 so I know the error is in the Seesi. That is not much error and is probably adequate for most uses. The claimed precision is 0.1%. so this is well within the stated precision.

Generates signals

Works great and reasonable price.

Update: Seller reached out to me the day this review went live and offered to replace the power supply that was bad. Changed the review to four stars as the function generator is good and the product support was great. Overall not a bad function generator for the price. It has worked well for everything I have needed to do with it to this point. The signal does pull down a significant amount with a load but I figure that is to be expected in this price range. Now on to the dinky power supply they provide with it... I kept seeing weird anomalies in the readings on my scope. I suspected the power supply included with the function generator to be the issue so I switched the generator to use my adjustable power supply set to 5v and suddenly the anomalies were gone. Connecting the output of the power supply directly to my scope set to AC coupling produced the picture attached to this review. It is possible that I just got a bad one but it seems unlikely.

I was having the same trouble others reported, having to press the power button multiple times before the unit would stay on. — I stumbled onto the solution: Click and release the power button QUICKLY, without holding it down. Works 100% now. (And to power OFF, you DO have to hold the button down a little longer.)

I've had mine for four years and I only use it occasionally because it is too noisy. Today I was trying to sweep a range of frequencies to test a low pass filter. The sweep function works fine but there is no output that I can find to signal the start of the sweep so I can synchronize a oscilloscope to the changing frequency. Without a start sweep signal there is noway I can see the output of the low pass filter drop with higher frequencies. Because it doesn't have a start sweep signal and because of the noise I have to give it the lowest possible score. I'm going to place this signal generator on my bench as a reminder that I need a better signal generator and a place holder for the new one that is comming! Then this one is going in the trash!

Great for the price. If I buy another, I will get one with AM/FM modulation and a true earth ground.