Agilent Technologies 8590 Series Service Manual page 39

Horizontal Hold
Perform this adjustment only if the displayed image is rolling
horizontally across the display.
The Horizontal Hold potentiometer is accessible through the top of the
display's cover. The instrument cover must be removed for access to the
display's cover. Refer to
Use the specified adjustment tool to make this adjustment.
1. If the display is unreadable, first adjust the Horizontal Hold
potentiometer for a stable display.
2. Press
CAL, More 1 of 4
3. Set the CRT horizontal position setting to 12.
4. Find the clockwise position of the Horizontal Hold potentiometer
where the display begins to roll horizontally.
5. Find the counter-clockwise position of the Horizontal Hold
potentiometer where the display begins to roll horizontally.
6. Set the adjustment to a position approximately midway between the
clockwise and counter clockwise position where the display does not
roll horizontally.
Vertical Hold
Perform this adjustment only if the displayed image is rolling vertically
on the display.
The Vertical Hold potentiometer is accessible through the top of the
display's cover. The instrument cover must be removed for access to the
display's cover. Refer to
Use the specified adjustment tool to make this adjustment.
1. If the display is unreadable, first adjust the Vertical Hold
potentiometer for a stable display.
2. Press
CONFIG, More 1 of 3
3. Press
SYNC NRM NTSC
4. Adjust the Vertical Hold potentiometer so that the display image is
not rolling vertically.
Chapter 2
1b. Display (with eight access holes in top of shield)
Figure 2-4 for the location of this adjustment.
,
CRT HORZ POSITION
Figure 2-4 for the location of this adjustment.
, .
More 2 of 3
(NTSC).
Making Adjustments
.
39