HP 8568B, Performance Tests And Adjustments Manual, Page: 249 / 313

21. Slope Compensation Adjustments
Note
At this sweep time, some trace discontinuities are common.
14. Adjust TILT for best flatness (clockwise rotation increases
the power slope), and trigger two sweeps on the synthesized
sweeper. See Figure 3-81 for the location of
Compare
the resultant trace with the specification. Continue adjusting
until best flatness is achieved.
Note
Best flatness is achieved when the maximum number of frequency
points are on or near the -14
reference.
F R E O U E N C Y C O N T R O L
I
T I L T
Figure 3-81. Location of Adjustment
15. Press TRACE A,
[
PEAK SEARCH
],
and
[
MARKER DELTA
).
Using
the data knob, place the marker on the lowest power peak. The
marker’s absolute value should be less than 2
16. See Figure 3-82 for examples of typical displays of frequency
response correctly and incorrectly adjusted.
FREQUENCY RE
L I M I T S
PROPERLY
TED
Figure 3-82. Slope Compensation Adjustment Waveforms
Adjustments 3-135