HP 70427A User Manual page 132

AM Noise Measurement (Input AM Detector) System Control
Step 6- Run the calibration
Modulate the calibration source as follows:
•
Type: AM
•
Depth: 10%
•
Frequency: 1 kHz
Step 7- Proceed with the measurement
Re-connect the DUT to the downconverter's SIGNAL input and proceed
with the measurement.
Downconverter Operation
HP 70427A/HP 70428A User's Guide 3-33