Description: Function generators are useful in a ton of applications from RF to embedded logic. They’re not usually super cheap though. Good news: we found a kit. The FG085 MiniDDS Function Generator is a ‘some assembly required’ kit that becomes a flexible, functional and easy to use frequency generator. Just solder the through-hole parts in place, attach the face/base plates and before you know it you’ll be generating sinewaves at frequencies up to 200KHz! But that’s only one of the tricks this thing can do. Three different operating modes allow the FG085 to generate 7 different types of continuous waveform as well as servo test and control signals in micro-second resolution.
The LCD screen and menu system make this an easy instrument to operate. Frequency, amplitude and offsets can all be set with the number pad and incrementally adjusted with the rotary encoder. The incremental step size can even be adjusted to make sweeps over a wide range easier to handle. The FG805 can generate a peak to peak amplitude up to 10V with an offset range from -5 to +5VDC. It can even be used as an adjustable DC voltage source by setting the amplitude to 0.
Based on 3 ratings:
The kit was easy to assemble and worked perfectly right from startup. Frequencies and wave forms are clean and accurate. Like to see it work at several MHz. This is a good buy.
I bought this to help my oldest son with a science fair project. We needed to generate specific frequencies to be pumped into a rubens tube for sound wave measurement. As a bonus I was able to teach him a bit about oscilloscopes when I checked the accuracy of the generator (which by the way was dead on). All in all a very nice little product, well packaged, and fairly easy to assemble. Good project for a beginner that is wanting to try out a build and challenge themselves. One note, the ground leg for the output connector is a hair too short to reach the board, and the instructions say to cut it off and solder in a piece of wire as a replacement. I opted to keep the leg, and make a pair of J shaped hooks to drop in and act as a bridge to the board. I felt that it gave a much sturdier connection that wouldn’t break if there happened to be any pressure applied.
Simple to assemble, it works very well !!! Perhaps white noise can be added …