1 Connect the OPEN to CH0 and press OPEN.
2 Connect the SHORT to CH0 and press SHORT.
3 Connect the LOAD to CH0 and press LOAD.
4 Connect one end of the coaxial cable to CH1, the other end to the LOAD. Then press ISOLATION.
5 Remove the LOAD and connect the coaxial cable to CH0. Then press THRU.
6 Press DONE. The SAVE menu appears on the screen.
7 Save calibration by pressing one of the 5 locations.
When using NanoSaver then SAVE 0 is required!
When using NanoSaver then SAVE 0 is required!
8 The insertionloss of the THRU should now read 0 dB (insertionloss) at CH1 over the entire stimulus range. This is the reference for the measurements.
9 Connect the LOAD again to CH0 to read the maximum possible returnloss.
10 Connecting the LPF Testfixture (two OPENs). The returnloss at CH0 should be 0 dB. There is no (PCB) THRU. So the insertionloss is high.
11 Connecting a PCB THRU to the testfixture shows the insertionloss between CH0 and CH1. Should be 0 dB (CH1). At very high frequencies this thru may increase the insertionloss a bit.
12 The effect of the returnloss degradation when another THRU (female-female) is added.
13 The returnloss when the LOAD is replaced by connecting the coaxial cable (used as THRU during the calibration).
NanoVNA calibration
Additional Info: How the NanoVNA is calibrated
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