Furuno FCV-1100L - Manual (Page 13)

1. OPERATIONAL OVERVIEW
1-5
1.5.2 Dual frequency display
The dual frequency display provides the low frequency picture on the left half of
the screen; the high frequency picture on the right half.
Frequency
Low
High
Beamwidth
Wide
Narrow
Echo Trail
Long
Short
1/1 HF LF 0
20
40
60
80
0
49.6
m
20
40
60
80
0
Low
frequency
High
frequency
0.0
Dual frequency display