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affect the menu adjustment.
The ARROW buttons often can be used
when no menu is on-screen. In these
situations, pressing the ARROW button
affects the function of the active (last-
used) menu. This is a short-cut to menu
operation. The menu appears on-screen while the adjustment is made and
times out. A frequently used menu can be adjusted very quickly using this
technique.
After an adjustment is made to a menu function, the menu times out after
a few seconds and the unit returns to normal operation.
Menu Layout. All menus use the same basic layout. The heading at the
top describes the menu function. The UP ARROW and DOWN ARROW
symbols to the left of the menu indicate which buttons are available for
adjustment. In menus that have several possible settings, a range of
adjustment indicator shows the total range available and the current
setting.
Within the menu are the options available. The selected option or current
setting is highlighted in the black box. If no adjustment is made, this is the
selected setting. Press an ARROW button while the menu is displayed to
select another option.
Several of the menus are multi-step. In some situations if an adjustment is
made, additional options become available for further adjustment.
Examples of these multi-step menus are Depth Range, Depth Alarm and
Zoom. See the detailed description of each function for further
explanation.
USING THE 250DX
CONTROL FUNCTIONS
Heading
Up Arrow Option
Down Arrow Option
Arrow Symbols
Selected Setting
Range of Adjustment Indicator