NEC XP21 - MultiSync - 21" CRT Display User Manual page 30

OSM Menus
Display Mode Menu
Display Mode provides you information about the current resolution
display and technical data including the horizontal and vertical
frequency.
Note: If the Mode indicates the symbol "(!)", the reset function for
Position and Size are not effective.
Language Select Menu
OSM Menus are available in six languages.
Vertical Linearity Menu
The vertical linearity controls allow you to adjust the spacing of the
areas on the screen. The object of this control is to ensure that a
one-inch circle is a true one-inch circle whereever it is drawn on the
screen (same image size throughout the total screen area).
The best way to determine the vertical linearity is as shown in the
Vertical Linearity Menu. Draw equally spaced (as determined by a
drawing application that has a ruler) horizontal lines across your screen.
Display Mode
Mode:
H Freq:
V Freq:
H Pol:
V Pol:
Vertical Linearity
Center
Bottom/Top
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