PXIe-5673E Calibration Procedure
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© National Instruments
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9
Verifying LO Output Power Accuracy
Complete the following steps to verify the LO output power accuracy of the PXIe-5673E 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:
•
PXIe-5650: 85 MHz to 1.3 GHz
•
PXIe-5651: 85 MHz to 3.3 GHz
•
PXIe-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-5673E 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-5650/5651/5652 REF IN/OUT front panel connector to any rubidium
frequency reference rear panel BNC connector through the BNC(m)-to-SMA(m) cable.
3.
Connect any available rubidium frequency reference rear panel BNC connector to the
spectrum analyzer REF IN rear panel connector through the BNC(m)-to-BNC(m) cable.
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.
