Marine GPS System User Manual

3-5
Weak
echoes
Signal level
adjusted
Figure 3-11 How SIG LEV works
3.8 Changing Zoom
Magnification Factor
You may select the zoom magnification fac-
tor for the marker and bottom zoom modes.
This the amount the zoomed picture is mag-
nified in relation to the normal picture.
1. Press the MENU key.
2. Press the [6] key to display the VIDEO
SOUNDER SETUP menu.
3. Press ▲ or ▼ to select ZOOM.
4. Press t or s to select zoom factor de-
sired; x2, x3, x4 or x5.
5. Press the MENU key.
3.9 Selecting Hue (color
arrangement)
The GP-1610CF provides several color ar-
rangements to match lighting conditions.
1. Press the MENU key.
2. Press the [6] key to display the VIDEO
SOUNDER SETUP menu.
3. Press ▲ or ▼ to select HUE.
4. Press t or s to select hue arrangement
number. (A portion of the sounder display
appears so you may see the result of your
selection.)
euH 12345
dgkB
roloc
eulBthgiL
eulb
kcalBneerGkcalB
5. Press the MENU key.
3.10 Measuring Depth
The VRM (Variable Range Marker) functions
to measure the depth to fish schools, etc.
1. Press ▲ or ▼ to place the VRM on an
echo.
2. Read the VRM range just above the VRM.
200k
132
0
40
80
120
160
58.3
CSE 180.0° SPD 16.8kt
DEP 132m TMP 16.0 °C
2D
14:32
POS 34° 26.245' N 135° 41.232' E
Depth of
VRM
VRM
Figure 3-12 How to measure
depth with the VRM
3.11 Knowing Depth Change
by Audible Chime
The depth chime function alerts you to change
in depth by audible chime Depth change di-
rection is given by chime interval; the longer
the interval the greater the change in depth.
To turn on or off the depth chime function, do
the following:
1. Press the MENU key.