External coupler

You can use pocketVNA with an external coupler. 
See this example setup: 


Figure : An external coupler and filter have been connected in order to expand pocketVNA capability for measurements up to 6 GHz. 

To adopt software settings select "External coupler" in Tools-App Settings


Figure: External coupler activated



Note:
- You will see "External Coupler" written next to the "connectedd to pocketvna" message. 
- You now can measure S11 if coupler is connected to port 1 and S22 if coupler is connected to port 2
- You cannot measure S12 or S21
- Do not forget to calibrate (Choose "Port 1 Reflection" if coupler is connected to port 1"; Choose "Port 2 Reflection" if coupler is connected to port 2")


Figure: Calibration window if external coupler is activated