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Performance Tests
Test 8 - Phase Noise and Spurs (RF)
Enter source and interface parameters
•
Carrier frequency: will be entered later.
•
Detector/discr input frequency: will be entered later.
•
VCO Tuning constant: will be entered later.
•
Center voltage of VCO tuning curve: 0 V.
•
Voltage tuning range of VCO: 0.2 V
•
VCO tune-port input resistance: 1E6
•
Phase detector: Internal Phase Detector, 1.2 GHz to 18
GHz.
Specify a calibration process
•
Method for determining phase detector constant: Measure
the detector constant.
•
Method for determining the VCO tuning constant:
Measure the VCO tuning constant.
•
PLL suppression: Will be verified.
Specify the control of signal sources
•
DUT: User's source, manual control.
•
REF SOURCE: User's source, manual control.
•
Tune voltage: Ref source.
Define the graph of results
•
Title: will be entered later.
•
Minimum X coordinate: 1 Hz.
•
Maximum X coordinate: 40 MHz
•
Minimum Y coordinate: –170
•
Maximum Y coordinate: 0
•
Horizontal portion of display to be used: 100%
•
Vertical portion of display to be used: 100%
•
Graph type: Single sideband phase noise (dBc/Hz)
Enter the spec lines
Changes each measurement.
Step 2 - HP 8662A initial configuration
1. Set HP 8662A RF frequency to 600 MHz.
2. Set HP 8662A output power to +5 dBm.
14-58 HP 70427A/HP 70428A User's Guide
Ω.
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