Atec Agilent-8563E - Manual (Page 106)

ESG Family Signal Generators Adjustments
Lock Angle Potentiometer Adjustment
Calibration Guide 5-9
Lock Angle Potentiometer Adjustment
Description
This test is used to optimize the phase detector sampling of the synthesizer phase-locked
loop reference frequencies. The lock angle adjustment sets the time during the reference
cycle when the ultra-quiet time phase detector measurement occurs. The phase detector
needs to make its measurement at the quietest point in the reference cycle. By adjusting
this potentiometer to minimize the level of the fractional-N spur, the time of the phase
detector sample can be optimized.
Required Test Equipment
• HP/Agilent 8563E Spectrum Analyzer
Procedure
Figure 5-6 Lock Angle Potentiometer Adjustment Setup
1. Connect the equipment as shown above.
2. Preset all of the equipment.
3. Follow the instructions as they appear on the controller’s display.