5/20/2023 0 Comments Vna analyzer![]() ![]() You can select a linear or log scale on the X-axis. ![]() You create a “network” instrument and the most common settings you’ll want to adjust are along the top. The software setup is easy and works like all the other functions on the Discovery 2. But taking hundreds of measurements per octave would be tedious and error-prone. Could you do the same measurements manually? Of course you could. Why do you care? An NA can help you understand tuned circuits, antennas, or anything else that has a frequency response, even an active filter or the feedback network of an oscillator. The Discovery 2 has these outputs and you can add custom displays, too. In addition, another scope-like output will show the phase shift through the network (Y-axis) vs frequency (X-axis). Often the magnitude will be the ratio of the output power to the input power as a decibel. ![]() You see a scope-like graph that has the frequency as the X-axis and some sort of magnitude as the Y-axis. Fancy instruments can do some other measurements, but that’s really the heart of it. ![]() You feed that into some component or network of components and then you measure the power you get out compared to the power you put in. You sweep a frequency generator across some range of frequencies. In its simplest form, there’s not much to an NA. However, in that same post, I mentioned I’d look at the device’s capabilities as a network analyzer (NA) sometime in the future. You might recall I generally liked it, although I wasn’t crazy about the price and the fact that the BNC connectors were an extra item. A while back, I posted a review of the Analog Discovery 2, which is one of those USB “do everything” instruments. ![]()
0 Comments
Leave a Reply. |