Furuno FCV-1200LM - Manual (Page 18)

1-8
DISCRIM 1/2
The discrim(ination) 1/2 screen shows the single picture on the right 1/2 of the screen and the
bottom lock display and discriminator display occupy the left 1/2 of the screen. The discriminator
display shows the bottom as a straight line, which is useful for determining bottom hardness.
10
Long tail=Hard bottom
Short tail=Soft bottom
Bottom trail
LF
21.5
0
0
Single frequency display
Bottom discrimination
display
1/1
ft
20
Bottom lock display
0
40
10
20
30
0
1
2
Discrim 1/2 display
DISCRIM 1/3
This display is similar to the DISCRIM 1/2 display except the bottom discriminator display
occupies only 1/3 of the left 1/2 of the screen as below.
Bottom trail
LF
21.5
0
0
Single frequency display
Bottom discrimination
display
1/1
ft
10
Bottom zoom
display
0
40
10
20
30
0
1
2
3
Long tail=Hard bottom
Short tail=Soft bottom
Discrim 1/3 display