Sounder Displays - Furuno GP-1610CF Operator's Manual

2.6 Sounder Displays

Five sounder displays are available: normal,
marker zoom, bottom zoom, bottom-lock and
A-scope display. You may select a sounder
display with the SNDR key.
Selecting a sounder display
1. Press the SNDR key. The SELECT
SOUNDER MODE screen appears.
SELECT SOUNDER MODE
Normal
Marker Zoom
Bottom Zoom
Bottom Lock
A-Scope
50kHz
SNDR: Sel
Figure 2-12 Select sounder mode screen
2. Press the SNDR key again to select a
sounder mode. Each time the key is
pressed the sounder mode changes in the
following sequence:
Normal Marker Zoom
A-Scope
You may also select a sounder mode by press-
ing or and the ENT key.
3. Press the ESC key to conclude your se-
lection.
200kHz
ESC: Close
Bottom Zoom
Bottom-Lock
Normal sounder display
50 kHz
The sounder uses ultrasonic pulses to detect
seabed 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 seabed condi-
tion.
Figure 2-13 Detection area
200 kHz
The higher the frequency of the ultrasonic
pulse the better the resolution. Therefore, the
200 kHz frequency is ideal for detailed ob-
servation of fish schools.
Water temp. display
Temp. °C
30
scale
20
Water
10
temp.
0
graph
Color
bar
Depth
162
CSE 180.0° SPD 16.8kt
DEP 162m TMP 16.0 °C
POS 34° 26.245' N
Figure 2-14 Typical 200 kHz normal
sounder display
50 kHz
200 kHz
Depth scale
0
Variable
50
68.3
Range
Marker
100
(white)
Fish
150
school
Bottom
200
200k
2D
Tx
13:41
frequency
135° 41.232' E
2-5