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PXIe-5665 Calibration Procedure
8.
Configure the PXIe-5665 according to the following property setting:
•
LO Export Enabled: True
9.
Initiate the PXIe-5665.
10. Close the PXIe-5665 session.
11. Create a new session for the PXIe-5653.
12. Configure the PXIe-5653 according to the following property settings:
•
Ref Clock Source: PXI -Clk
•
Frequency: 4.05625 GHz
13. Read the power meter channel B power and correct for the PXIe-5653 frequency.
14. Repeat step 13 and record the frequency where the minimum measured power occurs for
the following PXIe-5653 frequencies:
•
Minimum frequency: 4.05625 GHz
•
Maximum frequency: 8.2125 GHz
•
Frequency step: 50 MHz
15. Tune the PXIe-5653 to the frequency found in step 14.
16. Measure the LO1 power with power meter channel B. Correct the reading for the LO1
frequency.
17. Measure the LO2 power with the spectrum analyzer. Correct the reading for the 4 GHz LO2
frequency using the following equation:
LO2 Power
=
Spectrum Analyzer R Spectrum Analyzer Correction Factor
1
18. Measure the LO3 power with power meter channel A. Correct the reading for the LO3
frequency of 800 MHz.
19. Compare the readings from steps 16 to 18 to the following verification test limits in
Table 53.
20. Close the PXIe-5653 session.
If the LO output power verification procedure determines that the PXIe-5665 is outside its limits,
refer to
Worldwide Support and Services
for information about support resources or service
requests.
1
The
Spectrum Analyzer Correction Factor
value was calculated in the
Characterizing Spectrum Analyzer
equipment characterization procedure.
Table 53.
LO Output Power Verification Test Limits
LO
As-Found (dBm)
As-Left (dBm)
LO1
>7.0
7.0 to 8.0
LO2
>7.0
9.0 to 10.0
LO3
>7.0
9.0 to 10.0