w2aew | #317: NanoVNA Port Extension using the Electrical Delay setting @w2aew | Uploaded July 2020 | Updated October 2024, 3 hours ago.
The user calibration, described in video #313 (youtu.be/x-tbvAbh9jk), establishes a calibration or reference plane for the complex reflection/impedance measurement on the VNA. If you need to use adapters, fixtures, cables, etc. to connect to you DUT, you may need to apply a port extension to move the calibration plane to the DUT end of these "additions". This video discusses what a port extension is, why you might need it, and how to do it on the NanoVNA.
Notes from this video: qsl.net/w2aew/youtube/NanoVNA_Port_Extension.pdf
0:00 - Start
0:15 - Review of User Calibration and Measurement Plane
0:56 - What if your DUT Connection and Calibration Plane don't match
1:40 - Port Extension introduction
2:43 - How-to do Port Extension on the NanoVNA
3:09 - Live demonstration begins - intro
4:09 - Effect of adding an adapter
5:36 - Add Electrical Delay to extend the port (port extension)
7:20 - Summary