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NI PXIe-5653 Calibration Procedure
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© National Instruments
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13
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Fast fourier transform (FFT) mode with Blackman-Harris window
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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.
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.
Table 4.
LO2 Manual Sweep Settings
Carrier Frequency Offset
Resolution Bandwidth
Cross Correlation
100 Hz to 300 Hz
10 Hz
100
300 Hz to 1 kHz
30 Hz
1,000
1 kHz to 3 kHz
100 Hz
10,000
3 kHz to 10 kHz
300 Hz
10,000
10 kHz to 30 kHz
1 kHz
10,000
30 kHz to 100 kHz
1 kHz
5,000
100 kHz to 300 kHz
3 kHz
1,000
300 kHz to 1 MHz
10 kHz
1,000
1 MHz to 3 MHz
30 kHz
1,000
3 MHz to 10 MHz
100 kHz
1,000
Table 5.
LO2 Phase Noise Density (dBc/Hz)
Offset
LO2
100 Hz
<-92
1 kHz
<-121
10 kHz
<-134
100 kHz
<-134
1 MHz
<-143
5 MHz
<-155