HP 70427A User Manual page 540

4. Measure and adjust the calibration source power
Connect the AM detector to the calibration source's output. Adjust the
calibration source's output power until the voltage measured on the HP
3561A is within ±5% of the DC voltage measured with the detector
connected to the DUT.
Figure 14-5 Calibration Source Modulation
Step 4 - Modulate the calibration source
Step 5 - Calibrate for AM Noise measurement
Select
New Measurement
prompts, but use the connection below.
When prompted to Apply calibration spur to carrier, connect the AM
detector to the RF output of the calibration source and press the
softkey.
Test 3 - AM Noise and Spurs (mW LO)
•
Type: Internal AM
•
Frequency: 1 kHz
•
Depth: 2%
and follow the HP 3048A software screen
HP 70427A/HP 70428A User's Guide 14-29
Performance Tests
Proceed