Keysight NFA Series Performance Verification And Calibration Manual page 71

Figure 2-12
Step 2. Calculate the half power level from the data as shown in Figure 2-12.
Step 3. Use the summed value column as shown in Figure 2-12 as a look up
Example 2-2 summed P
Equation: ½ Power = Summed P
reference and find the cell, which closest matches the ½ Power Reading.
The corresponding frequency column is given as the center frequency
point. Enter the reading into the Test Worksheet Table on page 45 and
ensure the measured value is within its published specification.
Chapter 2
for reading 1 to reading 6
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Reading 201 / 2
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Test Descriptions
Frequency Accuracy
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