40 Chapter2
Making Adjustments
1b. Display (with eight access holes in top of shield)
5. Press SYNC NRM PAL (PAL).
6. Adjust the Vertical Hold potentiometer so that the display image is
not rolling vertically.
7. Repeat step 1 to step 5 until no adjustment is necessary for either
the NTSC or the PAL mode.
8. Press
DEFAULT SYNC.
This is the third softkey from the top.
Vertical Size
Perform this adjustment only if the displayed image is too tall or too
short for the display.
The Vertical Size 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 Figure 2-4 for the location of this adjustment.
Use the specified adjustment tool to make this adjustment.
1. Press
CAL, More 1 of 4, CRT VERT POSITION.
2. Set the CRT vertical position setting so that softkey labels are
adjacent to the keys at the right to which they are associated.
3. Adjust the Vertical Size potentiometer so that the uppermost softkey
label is adjacent to the uppermost softkey and the lowermost softkey
label is adjacent to the lowermost softkey.
4. Repeat step 2 and step 3 if necessary.
Vertical Linearity
Perform this adjustment only if the vertical space between the horizontal
graticules are not equal on the display.
The Vertical Linearity 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 Figure 2-4 for the location of this
adjustment. Use the specified adjustment tool to make this adjustment.
1. Adjust the Vertical Linearity potentiometer so that the vertical
space between each of horizontal graticules are approximately equal.
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