PXIe-5673 Calibration Procedure
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© National Instruments
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9
Verification of the PXIe-5673 is complete only after you have successfully completed all tests
in this section.
Verifying LO Output Power Accuracy
Complete the following steps to verify the LO output power accuracy of the PXIe-5673 module
using a power meter.
1.
Connect the PXIe-5611 LO OUT front panel connector to the power meter through the
SMA(m)-to-N(f) adapter.
2.
Generate a signal with the following niRFSG property settings:
•
Frequency (Hz): 85 MHz
•
Power Level (dBm): 0 dBm
•
Generation Mode: CW
•
LO OUT Enabled: Enabled
3.
Use the power meter to measure the LO OUT power.
4.
Compare the measured LO OUT output power to the limit in Table 3.
5.
Repeat steps 2 through 4 for the following frequency ranges in 10 MHz increments,
including endpoints:
•
PXI-5650: 85 MHz to 1.3 GHz
•
PXI-5651: 85 MHz to 3.3 GHz
•
PXI-5652: 85 MHz to 6.6 GHz
Store the resulting measurements.
If the results are within the selected test limit, the device has passed this portion of the
verification.
Verifying Modulation Impairments
Complete the following steps to verify the modulation impairments of the PXIe-5673 using a
spectrum analyzer.
1.
Connect the PXIe-5611 RF OUT front panel connector to the spectrum analyzer RF INPUT
front panel connector through the SMA(m)-to-SMA(m) cable.
2.
Connect the PXIe-5450 CLK IN front panel connector to any rubidium frequency reference
rear panel BNC connector through the BNC(m)-to-SMA(m) cable.
3.
Connect the PXIe-5450 CLK OUT front panel connector to the PXI-5650/5651/5652
REF IN/OUT front panel connector.
Table 3.
LO Output Power Accuracy Verification Upper Test Limits
LO Output Power (dBm)
LO Output Power Test Limit (dB)
0
±1.0
Note
: This specification is unwarranted.
