HP 8568B, Performance Tests And Adjustments Manual, Page: 260 / 313

2 5 .
Digital Storage Display Adjustments
I N T E N S I T Y L I N E
T R I G G E R C O N T R O L G E N E R A T O R
Y H BAL
X H
S W P O F F S E T
Figure 3-90. Location of Digital Storage Display Adjustments
5. Adjust LL THRESH fully clockwise. See Figure 3-90 for
location of adjustment.
6. Adjust XLL
so that
horizontal graticule lines just meet
the vertical graticule lines at the left and right sides of the
graticule. See Figure 3-90 for location of adjustment.
7. Adjust YLL so that vertical graticule lines just meet the
horizontal graticule lines at the top and bottom of the graticule.
See Figure 3-90 for location of adjustment.
8. Repeat steps 6 and 7 until horizontal and vertical lines are
adjusted so that they meet the edges of the graticule but do not
overshoot.
9. Adjust LL THRESH fully counterclockwise.
10. Adjust XSL so that horizontal graticule lines just meet the
vertical graticule lines at the left and right sides of the graticule.
11. Adjust YSL so that the vertical graticule lines just
meet the horizontal graticule lines at the top and bottom of the
graticule.
12. Repeat steps 10 and 11 until horizontal and vertical graticule lines
are adjusted so that they meet at the edges of the graticule but do
not overshoot.
3-146 Adjustments