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PXIe-5673E Calibration Procedure
5.
Use the spectrum analyzer to measure the mean RF output using the following spectrum
analyzer parameter settings (name this measurement
RF
):
•
Center frequency: (Frequency in step 4) + 1 MHz
•
Reference level: +5 dBm
•
Frequency span: 0 Hz
•
Resolution bandwidth: 500 Hz
•
Sweep time: 5 ms
•
Reference clock source: External
6.
Use the spectrum analyzer to measure the baseband linearity-related spur using the
following spectrum analyzer parameter settings (name this measurement
B
):
•
Center frequency: (Frequency in step 4) - 3 MHz
•
Reference level: +5 dBm
•
Frequency span: 0 Hz
•
Resolution bandwidth: 500 Hz
•
Sweep time: 5 ms
•
Reference clock source: External
7.
Calculate the power level of the baseband linearity-related spur in dBc by subtracting the
measured RF output power from step 5 from the measured baseband linearity-related spur
from step 6, as shown in the following equation:
P
baseband
= B - RF
8.
Compare the value calculated in step 7 to the corresponding limits in Table 12.
9.
Repeat steps 4 through 8 for the following frequency ranges in 200 MHz increments,
including endpoints:
•
PXIe-5650: 85 MHz to 1.3 GHz
•
PXIe-5651: 85 MHz to 3.3 GHz
•
PXIe-5652: 85 MHz to 6.6 GHz
If the results are within the selected limit, the device has passed this portion of the verification.
Table 12.
Baseband Linearity-Spurs Verification Upper Test Limits
CW Source
LO Frequency
Test Limit (dBc)
PXIe-5650/5651/5652
85 MHz to 250 MHz
-51
>250 MHz to 1.3 GHz
-56
PXIe-5651/5652
>1.3 GHz to 3.3 GHz
-56
PXIe-5652
>3.3 GHz to 6.6 GHz
-56
