User`s guide

11-14 Agilent Technologies E5500 Phase Noise Measurement System
FM Discriminator Measurement Examples
FM Discriminator Measurement using Double-Sided Spur Calibration
3. Next, apply modulation to the carrier signal, then press Continue.
Remove the modulation from the carrier and connect your DUT.
4. The system can now run the measurement. at the appropriate point,
re-establish quadrature and continue the measurement.