Bottom Discrimination Display - Furuno FCV-1900 Operator's Manual

Bottom discrimination display

The bottom discrimination display has two modes: Bottom discrimination 1/2 and Bot-
tom discrimination 1/3. For how to change the mode, see page 2-4.
• Bottom discrimination 1/2 display:
The bottom discrimination 1/2 screen shows the single frequency echo on the right
half of the screen and the bottom discrimination display occupies the left half of the
screen. The bottom discrimination display shows the bottom as a straight line, which
is useful for determining bottom hardness.
discrimination 1/2
1
x
LF_BD
*
30.2 30.2
*: Bottom tail
Long tail = Hard bottom
Short tail = Soft bottom
• Bottom discrimination 1/3 display:
This display is similar to the bottom discrimination 1/2 display except the bottom dis-
criminator display occupies the bottom one-third of the left half of the screen as be-
low.
discrimination 1/3
1
x x
LF_BD
*
30.2 30.2
*: Bottom tail
Long tail = Hard bottom
Short tail = Soft bottom
Bottom
Single freq. display
display
1 1
0/99
x x
LF: 2.0
2 2
1 1
0 0
10 10
m m
20 20
Bottom
display
Single freq. display
1 1
0/99
x
LF: 2.0
3 3
2 2
1 1
0 0
m m
10 10
VRM 0.0
0 0
0.0 0.0
10 10
20 20
30 30
40 40
VRM 0.0
0 0
0.0 0.0
10 10
20 20
30 30
40 40
1. OPERATION
1-7