NanoVNA SAA-2N V2.2 Vector Network Analyzer Calibration Kits: N-Type Male Short & Load & Open & Female to Female Connector 4 pcs/Set Frequency: DC to 3GHz Inpedance: 50 Ohm Package included: N-Type Male Short & Load & Open & Female to Female Connector 4 pcs/Set A few words about calibration and the calibration planes by using either VNA-QT or NanoVNA-saver
With the male calibration kit you can either calibrate directly at the female port1 and at the end of a test cable connected to port with the provided female female adaptor fitted. The second test cable connected to port 2 is the fitted to the female female adaptor if thru calibration is performed as well. In this case you may consider it as a virtual 0 length male female adaptor used. This means that the DUT to test must be fitted with a male adaptor in the input and a female adaptor on the output.
If you remove the female female adaptor for measuring a DUT with female adaptors on both input and output, then the phase sync between Reflection and Transmission is lost and the measurement is not done at the calibration plane, which was at the end of the female female adaptor now removed.
However means are moving the calibration plane from the end of the female female adaptor to the male adaptors reference plane, to be demonstrated later. Using the female kit and inserting the female female adaptor during thru calibration everything is perfectly calibrated.
For using the SAA-2N without computer the calibration is based on ideal calibration kit and it also possible to shift calbrations plane to the reference plane by DISPLAY/SCALE/ELECTRICAL DELAY function by entering the average delay for short and open being 20.4ps for male and 78.3ps for female, as well for the female female adaptor which is 58.3ps. More on that later as load is a bit problematic and the load and short delay are frequency dependent
With the male calibration kit you can either calibrate directly at the female port1 and at the end of a test cable connected to port with the provided female female adaptor fitted. The second test cable connected to port 2 is the fitted to the female female adaptor if thru calibration is performed as well. In this case you may consider it as a virtual 0 length male female adaptor used. This means that the DUT to test must be fitted with a male adaptor in the input and a female adaptor on the output.
If you remove the female female adaptor for measuring a DUT with female adaptors on both input and output, then the phase sync between Reflection and Transmission is lost and the measurement is not done at the calibration plane, which was at the end of the female female adaptor now removed.
However means are moving the calibration plane from the end of the female female adaptor to the male adaptors reference plane, to be demonstrated later. Using the female kit and inserting the female female adaptor during thru calibration everything is perfectly calibrated.
For using the SAA-2N without computer the calibration is based on ideal calibration kit and it also possible to shift calbrations plane to the reference plane by DISPLAY/SCALE/ELECTRICAL DELAY function by entering the average delay for short and open being 20.4ps for male and 78.3ps for female, as well for the female female adaptor which is 58.3ps. More on that later as load is a bit problematic and the load and short delay are frequency dependent