NEC XP21 - MultiSync - 21" CRT Display User Manual page 27

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Basic Geometry Controls Menu
The Basic Geometry controls allow you to adjust the curvature or angle
of the sides of your display.
Sides In/Out (pin cushion): increases or decreases the curvature of the
sides either inward or outward.
Sides Left/Right (pin cushion balance): increases or decreases the
curvature of the sides relative to each other.
Sides Tilt (parallelogram): increases or decreases the tilt of the sides
either to the left or right.
Sides Align (trapezoidal): increases or decreases the top of the screen
to be the same as the bottom.
Rotate (raster rotation): rotates the entire display clockwise or counter
clockwise.
While in the Basic Geometry Controls Menu, the buttons on the front of
the monitor work as follows:
exit: exits to the main menu.
control up/down: moves the highlighted area up/down to select one of
the choices.
control +/-: moves the bar in the + or - direction to increase or decrease
the adjustment.
proceed: moves the highlighted area down to select one of the choices.
reset: resets the current highlighted control to the factory setting.
Note: a warning window will allow you to choose to reset the current
control or to cancel reset of the current control.
Basic Geometry
Sides:
In/Out
Left/Right
Tilt
Align
Rotate
OSM Menus