Another useful feature of the GPSMAP 185 Sounder is the sounder zoom, which
allows you to instantly zoom in to look at a specific portion of the sounder display
by using the either the
C
or
D
key. The sounder zoom function is divided into
four display levels:
2X Split ScreenShows two reduced-size sonar pictures at the same time. The
top half of the display screen shows the complete sonar picture at its original
scale. The bottom half shows a portion of the original picture at 1/2 depth
scale.
2X Full ScreenDisplays the 2X zoomed picture on the full GPSMAP 185
Sounder screen and does not show the original scale picture.
4X Split ScreenShows two reduced pictures, with one at the original depth
scale and one at 1/4 the original depth scale.
4X Full ScreenDisplays only the 4X zoomed picture on the full GPSMAP 185
Sounder screen.
Once activated, the zoomed picture becomes the sounder page display. Note: the
zoom function can only be deactivated by pressing the
D
key until the original scale
picture appears. Pressing
Q
will not turn off the zoom function.
The zoom function operates in either auto zoom or manual zoom. Auto zoom will
follow the bottom contour while manual zoom will display the selected depth.
To access the sounder zoom function:
1. While viewing the sounder page, press
C
once. The 2X split screen will appear.
(Note: the current zoom scale will be displayed on the status bar at the bottom of the
screen).
2. Continue to press
C
to advance to further zoom screen levels.
3. To deactivate the sounder zoom function, press
D
until the original scale picture
appears and a triple beep sounds.
For more on the zoom function, see pages 27-29.
9
GETTING STARTED
Sounder Page
A. Use the zoom window to view a smaller por-
tion of the complete range in greater detail.
B. Moving the zoom window allows you to view
anywhere between the surface and the bot-
tom quickly. See page 28 for directions on
moving the zoom window.
A
B
