HP 70427A User Manual page 580

NOTE
Procedure
Set the DETECTOR POLARITY switch on the HP 3048A Option K21 to
match the polarity of the detector.
The following procedure assumes familiarity with HP 3048A operation.
Initial configuration of the test system and DUT is done in steps 1 to 5.
Calibration is done in step 6, and an AM noise measurement is made in step
7.
Step 1 - Define the measurement
Specify measurement type and frequency range
•
Measurement type: AM Noise
•
Start freq: 1 Hz
•
Stop freq: 40 MHz
•
Averages: 4
Enter source and interface parameters
•
Carrier frequency: 12.6 GHz
•
Detector/discr input frequency: 12.6 GHz
•
Phase detector: External Phase/AM Detector
Specify a calibration process
•
Calibration technique: Derive from Double Sided Spur.
•
Spur Amplitude: –40 dBc
•
Spur Frequency: 1 kHz
Specify the control of signal sources
•
DUT SOURCE: USER'S SRCE, MANUAL CONTROL
•
AM DETECTOR: USER'S DEV., MANUAL CONTROL
•
CAL SOURCE: USER'S SRCE, MANUAL CONTROL
Define the graph of results
•
Title: Test 9 - Tunable Source AM Noise and Spurs at 12.6
GHz
•
Minimum X coordinate: 1 Hz
•
Maximum X coordinate: 40 MHz
Test 9 - AM Noise and Spurs (RF)
HP 70427A/HP 70428A User's Guide 14-69
Performance Tests