Furuno FCV-1200L Operator's Manual page 20

Displayed in reddish-
brown since high
freq. echoes are
red or reddish brown.
Low frequency display
Bottom zoom
display (LF)
1-10
Low frequency
Blue
GRN
RED
Descriminator
Reddish-brown
How the mix display works
LF
10
20
30
40
21
22
23.6
23
ft
User 2 display
High frequency
YEL
R-BRN
ORG
+
These echoes
are likely to be
Blue
small fish.
YEL
Displayed in blue
since high freq.
BLU
echo is weaker.
1/1
HF
0
0
0
0.0
10
20
30
40
21
22
23
Green
High frequency display
Bottom zoom
display (HF)