WinVNA
WinVNA is a Windows application designed to interface with the SV4401A Vector Network Analyzer.
It provides a user-friendly interface to perform and visualize frequency-domain measurements in real time.
Features
- Control of the SV4401A VNA via USB
- Single and continuous frequency sweeps
- Marker placement and tracking
- Export of measurement data (CSV, S1P/S2P formats)
- Customizable colors and display settings
- Integrated command window
- Preset management
Download
WinVNA and its documentation are available from the Downloads page.
Screenshots
Tip – Trick
SV4401A – Quick Fix for Constant +3 dB Gain Error
It’s not unusual for the default calibration file 0.cal to become corrupted,
and when that happens, any subsequent calibration will fail as well.
To prevent this, it's a good idea to save a valid calibration as 1.cal
(or under any other name).
So, when you notice dB values greater than zero, simply restore the saved calibration:
MENU → File → Select file 1.cal → Press Open
Note:
If your only calibration file is 0.cal and it turns out to be corrupted, the best solution is to:
- Reflash the same firmware version you're currently using
- Then follow the steps above to create and save a valid
1.cal file