© National Instruments Corporation 13 NI PXI-5600 Calibration Procedure
6. Call niTuner_setFreq and set the NI PXI-5600 to the frequency
you are testing.
7. Set the signal generator frequency to the frequency you are testing.
8. Set channel B on the power meter to the frequency you are testing.
9. Wait 200 ms for the signal generator and the power meter to settle.
10. Read channel A (PWRA) and channel B (PWRB) from the power
meter.
Note PWRA corresponds to IF OUTPUT and PWRB corresponds to RF INPUT on the
NI PXI-5600.
11. Call
niTuner_getTemperature to obtain the temperature
correction factor.
Caution Step 12 requires different actions depending on the programming language
you are using. Steps 12a, 12b, and 12c apply to LabVIEW programming only. Steps 12d
and 12e apply to C/C++ programming. Make sure to use the appropriate steps for your
programming language.
Table 4. Absolute and Relative Amplitude Accuracy Settings
Calibration
Iteration
Signal Generator
Amplitude
NI PXI-5600 Parameters
Reference
Level
Mixer
Level
1 –24 dBm –30 dBm –30 dBm
2 –14 dBm –20 dBm –30 dBm
3 –4 dBm –10 dBm –30 dBm
4 6 dBm 0 dBm –30 dBm
5 16 dBm 10 dBm –30 dBm
6 16 dBm 20 dBm –30 dBm
