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NI PXI-5663 Calibration Procedure
23. Calculate the phase noise using the following equation:
Phase Noise
(dBc/Hz) =
PSD
-
Signal Peak
24. Compare the
Phase Noise
to the verification test limits in Table 19.
25. Repeat steps 7 to 24 for all frequencies in Table 18.
26. Close the NI 5663 session using the niRFSA Close VI or the
niRFSA_close
function.
If the results are within the selected test limit, the device has passed this portion of the
verification.
Appendix A: Non-Input-Related Spurs Test
Frequencies
Non-input-related spurs are created by mechanisms within the NI 5663 and are not RF signals.
They can be treated as if they are RF signals, however, and you can observe them at particular
tunings of the NI 5663. Table 20 gives the NI 5663 tuned frequencies and the RF frequency that
would correspond to the spur frequency.
Table 19.
Phase Noise Verification Test Limits
NI 5663 Tuned Frequency
*
Test Limit
500 MHz
<-112 dBc/Hz
1 GHz
<-105 dBc/Hz
1.5 GHz
<-98 dBc/Hz
2 GHz
<-98 dBc/Hz
2.9 GHz
<-95 dBc/Hz
3 GHz
<-95 dBc/Hz
*
10 kHz offset, NI 5652 using internal reference.
Table 20.
Non-Input-Related Spurs Test Frequencies
NI 5663 Tuned Frequency (MHz)
Equivalent RF Frequency for Spur (MHz)
140
149.9999988
202
210.0000124
306
300.0000145
350
350
355
359.999997
375
375