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•
Fast fourier transform (FFT) mode with Blackman-Harris window
•
Measurement span from 100 Hz to 10 MHz (offset frequencies)
4.
Use the signal source analyzer to perform a manual frequency sweep at the settings in Table 4.
Carrier Frequency Offset
100 Hz to 300 Hz
300 Hz to 1 kHz
1 kHz to 3 kHz
3 kHz to 10 kHz
10 kHz to 30 kHz
30 kHz to 100 kHz
100 kHz to 300 kHz
300 kHz to 1 MHz
1 MHz to 3 MHz
3 MHz to 10 MHz
5.
Set the RF frequency to 4 GHz and commit the settings to hardware.
6.
If your signal source analyzer does not automatically center for phase noise measurements,
manually set the signal source analyzer center frequency to 4 GHz.
7.
Check the signal generation status and verify that there are no reported errors or warnings.
8.
Use the signal source analyzer to measure the phase noise. Record the results.
9.
Close the device session.
10. Ensure that the recorded measurements are within the limits set in Table 5.
100 kHz
Table 4. LO2 Manual Sweep Settings
Resolution Bandwidth
Table 5. LO2 Phase Noise Density (dBc/Hz)
Offset
100 Hz
1 kHz
10 kHz
1 MHz
5 MHz
NI PXIe-5653 Calibration Procedure | © National Instruments | 13
10 Hz
30 Hz
100 Hz
300 Hz
1 kHz
1 kHz
3 kHz
10 kHz
30 kHz
100 kHz
Cross Correlation
100
1,000
10,000
10,000
10,000
5,000
1,000
1,000
1,000
1,000
LO2
<-92
<-121
<-134
<-134
<-143
<-155
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