HP 70427A User Manual page 584

Figure 14-15 AM Detector to Sources Output Diagram
Step 5 - Modulate the calibration source
Step 6 - Calibrate for AM Noise measurement
Select
New Measurement
but use the connection diagrams below.
•
Type: Internal AM
•
Frequency: 1 kHz
•
Depth: 2%
and follow the HP 3048A software screen prompts,
HP 70427A/HP 70428A User's Guide 14-73
Performance Tests
Test 9 - AM Noise and Spurs (RF)