Agilent Technologies 8753ES Option 011 Service Manual page 161

4. Press
SERVICE MENU
System
ANALOG IN Aux Input
5. Press
MORE
Format
6. To make sure that you have connected the test points properly, adjust the CAV ADJ
potentiometer while observing the analyzer display. You should notice a change in
voltage.
7. Observe the phase locked loop error voltage:
• If "spikes" are not visible on the analyzer display (see
necessary.
• If "spikes" are excessive (see
Figure 3-24) on the A3 source bias assembly to eliminate the spikes.
• If the "spikes" persist, refer to
Figure 3-25 Display of Acceptable versus Excessive Spikes
Chapter 3
ANALOG BUS ON
.
11 x1
REAL
Scale Ref 10
Figure 3-25): adjust the CAV ADJ potentiometer (see
Chapter 7 , "Source Troubleshooting."
Adjustments and Correction Constants
Source Spur Avoidance Tracking Adjustment
S PARAMETERS
Meas
MARKER→REFERENCE
k/m
Figure 3-25): no adjustment is
.
3-51