Log Magnitude. NanoVNA-QT will accurately plot the passband attenuation, shape factor, and stopband rejection values. This layout makes adjusting manual tuning cavities significantly easier. 3. High-Resolution Sweeps
The tiny screen of the S-A-A-2 can make detailed tuning tedious. NanoVNA-QT solves this limitation by offloading processing and rendering to your computer.
Here are two real-world projects where the PC software outshines the standalone unit. nanovna-qt pc software with the s-a-a-2
: View complex Smith charts and log magnitude plots side-by-side on a large monitor.
Calibration shifts the measurement reference plane directly to the ends of your RF cables, eliminating the electrical effects of test leads. Doing this inside NanoVNA-Qt ensures higher point resolution than on-device calibration. The SOLT Calibration Sequence Log Magnitude
Check calibration and re-calibrate if the environment has changed. Ensure all SMA connections are tight.
Right-click the graph to change trace types (e.g., SWR, LogMag for Return Loss). C. TDR (Time Domain Reflectometry) Here are two real-world projects where the PC
: If the software stops updating, click Device > Disconnect , unplug the USB cable, plug it back in, and reconnect.
Using the gives you a larger display, lets you save your data, and increases data points from 201 up to 1024 points for highly precise tuning.
The Smith chart is essential for impedance matching. It shows resistance and reactance simultaneously.