Sounder Display Description - Furuno GP-1850WDF Operator's Manual

2. VIDEO SOUNDER OPERATION
2.2 Sounder Display
Description
The figure below shows all indications and
markers which may appear on the normal
sounder display.
Normal sounder display indications,
markers
Variable
Range
Marker
Nav information
(white)
window
34 12.345' N
Minite 135 12.345' E
mark
F
Color
80
bar
Temp.
60
scale
Water
40
temp.
Graph
0
30.0
Water
GPS 3D
50k
temp.
display
Tx frequency
GPS status
Indications on the normal sounder display
Note: The water temperature graph can be
turned on or off. (See TEMP GRAPH
on page 11-4.) The temperature scale
is fixed between 20-80°F (0 to 30°C).
The normal sounder display shows either the
50 kHz picture or 200 kHz picture. To switch
between these pictures, do the following:
1. Press the [SNDR] key several times to
show the normal sounder display.
30
20
0
GPS 3D
50k
Normal sounder display
2-2
Functions for
soft keys
Depth scale
CSE 245.8
SOUNDER
16.3kt
SPD
RANGE
15.0
20
GAIN
30
SHIFT
40
MODE/
FREQ
50
SNDR
FUNC
Depth
SOUNDER
RANGE
20
GAIN
30
SHIFT
40
MODE/
FREQ
50
SNDR
FUNC
2. Press the MODE/FREQ soft key. The
display changes as below.
MODE/FREQ
AUTO CRUISING
AUTO FISHING
MANUAL
DGPS 3D
50k
Mode/freq window
3. Press the SELECT 200kHz (or SELECT
50kHz) soft key.
4. Press the RETURN soft key to manually
close the window, or wait 10 seconds and
the window automatically closes.
50 kHz picture
The sounder uses ultrasonic pulses to detect
bottom conditions. The lower the frequency
of the pulse, the wider the detection area.
Therefore, the 50 kHz frequency is useful for
general detection and judging bottom
condition.
200 kHz picture
The higher the frequency of the ultrasonic
pulse the better the resolution. Therefore,
the 200 kHz frequency is ideal for detailed
observation of fish school.
Comparison of transducer frequencies
0
SOUNDER
0.0
SELECT
50kHz
50
SELECT
200kHz
100
150 RETURN
50 kHz
200 kHz