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The GPSMAP 135 Sounder uses three range modes: auto, manual, and window.
Auto mode displays the most information possible while continuously showing
the bottom. Manual mode lets you select the displayed depth. Window mode
allows you to define a starting depth and length of the range window. You may
switch between auto and manual modes by using the
R
keypad. Window range
mode, however, must 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
depth scale at the right side of the page.
2. Press
T
to confirm the selected range.
To switch from manual to auto mode:
1. Press the
R
up or down and hold it until you hear a repeated beep. ‘Auto’ will be
displayed in the function field at the top right corner of the page.
2. Press
T
.
The underwater waypoint feature marks a waypoint’s position and its depth.
This makes it easier to find and use an object such as a stump for a future fishing
location.
To mark an underwater waypoint:
1. Press
T
to pause the screen movement.
2. Use the
R
keypad to move the cursor onto the target (underwater drop off,
stump, etc.) you want to mark. A data field will appear with the cursor’s depth and
bearing and distance from your current position.
3. Press
T
. A waypoint page will appear with the waypoint’s coordinates, default
three-digit name, and depth.
4. Enter any waypoint information such as name, comment, etc., and press
T
.
5. When finished, press
Q
or
T
.
A. When switching between auto and manual
modes, the range scale will be highlighted.
B. The digital depth of the waypoint is captured
with the underwater waypoint function.
8
GETTING STARTED
Sounder Page
AB
GPS 135 Rev C 8/4/98 4:17 PM Page 8
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