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GPSMAP 188/188C Sounder Owner’s Manual 83
USING SONAR > SONAR PAGE
Scroll—adjusts the rate that the graph scrolls from
right to left. If you are sitting still or the graph is
moving too fast, slowing the scroll rate or pausing
it can be beneficial.
Sonar Page Options
The GPSMAP 188/188C Sounder’s Sonar Page features a menu
page that provides access to additional functions and to layout and
data field options.
Sonar Page Menu Options
To display the Sonar Page options:
Press MENU.
To select a menu option:
Use the ROCKER to highlight the option, and press
ENTER.
The following option is available:
Adjustments—lists the Adjustment Menu options and their current
settings (see page 79).
To change an Adjustment setting:
1. While on the Adjustment options list, use the ROCKER to
highlight the option, and press ENTER.
2. Use the ROCKER to make the change, and press ENTER.
Show/Hide Pointer—allows you to reference sonar items and
mark underwater waypoints. This makes it easier to find and use
an object such as a stump for a future fishing location. When using
this feature, the Sonar Page pauses. The pointer does not move off
the paused display and cannot show an area that has scrolled off
the screen. The depth is updated while the display is paused, but
the unit does not show any new sonar data until the standard Sonar
Page is resumed. You can see a discontinuity from where the sonar
information stops to where it starts again.
Scroll
Adjustment