Contents

1 Welcome ............................................................................................................................. 1

2 Introduction ......................................................................................................................... 2

1 Software license conditions .................................................................................................................. 2

2 Trademarks ............................................................................................................................................ 2

3 System requirements ............................................................................................................................. 3

4 Installing the SDK ................................................................................................................................... 3

3 Programming with PicoVNA 2 .......................................................................................... 4

4 API functions ...................................................................................................................... 5

1 Command summary .............................................................................................................................. 5

2 Communications .................................................................................................................................... 7

1 FND() - discover instrument ...................................................................................................... 7

2 FNDSN() - discover instrument by hardware serial number .................................................... 8

3 CloseVNA() - close instrument .................................................................................................. 9

4 ResetErr() - Reset serial communications error flag .............................................................. 10

3 Calibration ............................................................................................................................................ 11

1 SelectKit() - create kit [dialog] ................................................................................................. 11

2 SetKit() - create kit ................................................................................................................... 12

3 SetFreqPlan() - set frequency plan ......................................................................................... 14

4 SetCWmode() - set CW sweep plan ........................................................................................ 15

5 SelectCal() - calibrate and set frequency plan ....................................................................... 16

6 MeasCal() - measure calibration standard ............................................................................. 17

7 AppCal() - apply calibration ..................................................................................................... 19

8 SelectP1dB() - calibration and measurement [dialog] ........................................................... 20

9 SelectAMPM() - AM-PM calibration and measurement [dialog] ........................................... 21

10 DoP1dBCal() - P1dB Calibration ........................................................................................... 22

11 DoAMPMCal() - AM-PM Calibration ...................................................................................... 23

12 SetRXQ() - set quiescent point of receiver ........................................................................... 24

4 Measurements ..................................................................................................................................... 25

1 SetTrig() - set sweep trigger mode ......................................................................................... 25

2 Measure() - measure one sweep (S11, S21, S11+S21, or ‘All’ using current calibration) ..... 26

3 DoP1dBMeas() - measure P1dB ............................................................................................. 27

4 DoAMPMMeas() - measure AM-PM ...................................................................................... 28

5 Signal processing ................................................................................................................................. 29

1 SetEnhance() - set enhancement parameters ........................................................................ 29

2 SetRef() - set reference plane ................................................................................................. 30

3 SaveToMem() - save measurement to memory .................................................................... 31

4 AppMemMath() - apply memory math ................................................................................... 32

5 SetSysZo() - set system impedance ....................................................................................... 33

6 ZConversion() - impedance conversion utility ........................................................................ 34