HP 70427A User Manual page 519

Figure 14-2
Procedure
Performance Tests
Test 2 - Phase Noise and Spurs (mW LO)
Phase Noise and Spurs Test Setup
The following procedure assumes familiarity with HP 3048A operation.
Initial configuration of the test system and DUT is done in steps 1 to 3. A
phase noise measurement is made 5 times with various DUT tuning
sensitivities and carrier frequencies. The software configuration changes,
DUT tuning sensitivities and frequencies are listed for each measurement in
steps 4 through 8.
Step 1 - Initial HP 3048A measurement definition
1. Specify measurement type and frequency range
•
Measurement type: Phase Noise Using a Phase Lock Loop
•
Start freq: To be entered later.
•
Stop freq: 40 MHz
•
Averages: 4
2. Enter source and interface parameters
•
Carrier frequency: To be entered later.
•
Detector/discr input frequency: To be entered later.
•
VCO Tuning constant: To be entered later.
•
Center voltage of VCO tuning curve: 0 V.
14-8 HP 70427A/HP 70428A User's Guide