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•
Voltage tuning range of VCO: To be entered later.
•
VCO tune-port input resistance: 1E6
•
Phase detector: Internal Phase Detector, 1.2 GHz to
18 GHz.
3. 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.
4. Specify the control of signal sources
•
DUT: User's source, manual control.
•
DN CONV: Not in use.
•
REF SOURCE: User's source, manual control.
•
TIMEBASE: Not in use.
•
TUNE VOLTAGE: Ref source.
5. Define the graph of results
•
Title: To 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)
6. Enter the spec lines
To be entered later
Step 2 - Reference source initial configuration
1. Make the reference source the active MMS module (ACT indicator lit):
a. Press the
DISPLAY
b. Press the
NEXT INSTR
indicator lights.
2. Press the
INSTR PRESET
3. Access the Source screen: if the module is an HP 70427A or HP 70428A
Option 002 press the
Test 2 - Phase Noise and Spurs (mW LO)
key.
softkey until the reference source's ACT
key.
softkey.
Source
HP 70427A/HP 70428A User's Guide 14-9
Performance Tests
Ω.
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