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Range Modes
The GPSMAP 135 Sounder uses three depth range modes: auto, manual, and
window. Auto is the default and continually adjusts the screen display to show
the maximum amount of data possible, while always showing the bottom; manu-
al allows you to adjust the sonar display’s depth with the the
R
keypad; window
lets you establish a starting depth (top) and length (span) for the sonar display.
Switching Between Ranges and Modes
The
R
keypad may be used for easy transition between manual and auto
modes. Window mode, however, can only be activated from the sounder options
menu (see page 31).
To switch from auto to manual mode:
1. Press the
R
keypad up or down until the desired depth range is displayed on the
scale at the right side of the page.
2. Press
T
to confirm the selected range or
Q
to return to Auto mode.
To adjust manual range or switch from manual to auto mode:
1. Press
R
keypad up or down until the desired depth range is displayed.
2. Press
T
to confirm the selected depth.
3. You can easily switch to Auto mode if you press and hold the
R
up or down until
you hear a repeated beep. ‘Auto’ will be displayed in the function field at the top
right corner of the page.
4. Press
T
to confirm.
To adjust the window range anytime after initial setup:
1. Press
R
once in any direction. The window range submenu will appear.
2. Enter values for the ‘top’ and ‘span’ fields and press
T
.
3. When finished press
Q
.
A. Auto mode will show the most information
available while always keeping the bottom in
view.
B. The range scale will be highlighted when using
the arrowkeypad to adjust manual range mode
or when switching between auto and manual
mode.
26
AB
SECTION
3
SOUNDER PAGE
Range Modes
GPS 135 Rev C 8/4/98 4:17 PM Page 26
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