HP 8920A Application Handbook page 233

On the Test Set using the knob and data entry keys:
17. Increase Amplitude until the SINAD meter again reads 12 dB.
Effective Sensitivity is displayed as Amplitude.
Record the level (in dBm) for use later in the procedure.
Calculate the Receiver Sensitivity Degradation:
18. Calculate as follows:
Sensitivity Degradation = Step 5 Sensitivity − Step 7 Sensitivity
For example, (−119 dBm) − (−114 dBm) = 5 dB
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Using the Tracking Generator
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