A multiplatform tool to save Touchstone files from the NanoVNA, sweep frequency spans in segments and generally display and analyze the resulting data.

hacktoberfest ham-radio hamradio met nanovna nanovna-saver vna

Go to file

Rune B. Broberg 6f83effa41 Now I need to update version numbers in two places!		2019-09-04 20:41:41 +02:00
.github/ISSUE_TEMPLATE	Update issue templates	2019-09-01 15:46:16 +00:00
.idea	GNU General Public License v3	2019-08-29 15:10:35 +02:00
NanoVNASaver	Merge branch 'NewLayoutMarkers'	2019-09-04 20:18:16 +02:00
.gitignore	Selectable sweep color, and a darker default color.	2019-09-01 16:47:12 +02:00
LICENSE	…
Pipfile	Added Time-Domain Reflectometry, aka. "cable length measurement".	2019-09-01 15:18:35 +02:00
README.md	Removed old run-instructions as they are no longer current	2019-09-04 20:25:02 +02:00
nanovna-saver.py	Small script to start the program as usual after changes to structure.	2019-09-04 20:34:02 +02:00
requirements.txt	Added Time-Domain Reflectometry, aka. "cable length measurement".	2019-09-01 15:18:35 +02:00
setup.cfg	Prep for pip packaging	2019-09-04 18:12:38 +02:00
setup.py	Now I need to update version numbers in two places!	2019-09-04 20:41:41 +02:00

README.md

NanoVNASaver

A small tool to save touchstone files from the NanoVNA, and to allow sweeping frequency spans in sections to gain more than 101 data points.

Introduction

This software connects to a NanoVNA and extracts the data for display on a computer, and for saving to Touchstone files.

Current features:

Reading data from a NanoVNA
Splitting a frequency range into multiple segments to increase resolution (tried up to >10k points)
Displaying data on Smith charts and LogMag-charts for both S11 and S21
Displaying two markers, and the impedance and VSWR (against 50 ohm) at these locations
Exporting 1-port and 2-port Touchstone files
TDR function (measurement of cable length)
Reading and displaying Touchstone files as reference traces

Expected features:

Mouse control of markers
Further data readout for markers, such as return loss/forward gain

0.0.3: 0.0.2: 0.0.1:

Windows

The software was written in Python on Windows, using Pycharm, and the modules PyQT5, numpy and pyserial.

Linux

In order to run this app in Linux environment, you'll need the following packages:

python3-serial
python3-pyqt5
numpy

Installation and Use with pip

Clone repo and cd into the directory
- git clone https://github.com/mihtjel/nanovna-saver
- cd nanovna-saver
Run the pip installation

pip install .
Once completed run with the following command

NanoVNASaver

Using the software

Connect your NanoVNA to a serial port, and enter this serial port in the serial port box. Click "Open serial" to connect.

The app can collect multiple sweeps to get more accurate measurements. Enter the number of sweeps to be done in the sweep count box. Each sweep is 101 data points, and takes about 1.5 seconds to complete.

Marker frequencies are entered in Hz. Press enter after typing the frequency for it to take effect.

To get accurate TDR measurements, calibrate the device, and attach the cable to be measured at the calibration plane - ie. at the same position where the calibration load would be attached.

License

This software is licensed under version 3 of the GNU General Public License. It comes with NO WARRANTY.

You can use it, commercially as well. You may make changes to the code, but I (and the license) ask that you give these changes back to the community.

Credits

Original application by Rune B. Broberg (5Q5R)

TDR inspiration shamelessly stolen from the work of Salil (VU2CWA) at https://nuclearrambo.com/wordpress/accurately-measuring-cable-length-with-nanovna/

Thanks to everyone who have tested, commented and inspired.