Keysight NFA Series Performance Verification And Calibration Manual page 80

Test Descriptions
Noise Figure Range and Accuracy
Step 15. Use the Actual and Measured attenuations given in the Worksheet to
calculate the Actual and Measured Noise Figures in the Test Record.
Step 16. Calculate the Noise Figure Instrument Uncertainty Error for each ENR
measurement range detailed in the relevant model number tables in
Appendices A through D. Enter the values into the appropriate test
record and ensure that the measured values are within their published
specifications (pass/fail).
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