Furuno FCV-1200L Operator's Manual page 56

B/L RANGE
Sets display range of bottom-lock, discrim-1/2, discrim-1/3 picture. (5-200 m, 16-600 ft, 2-120 fa,
4-160 hiro, 3-120 P/B)
Note: For the vertical split screen, halve the above values.
B/L DETECT
When vertical lines appear at the bottom of the bottom lock display, you can erase them with
B/L DETECT. Enter the length of the lines in the menu. In the example below, the length of the
lines is 0.5 meters, so enter "0.5." The setting range is 0.1-20.0.
SPLIT RANGE
Select ON to set range for low frequency and high frequency individually.
1. Rotate the [RANGE] switch to show RANGE (LF or HF) window.
2. Press the [RANGE] switch within five seconds to display the RANGE (LF) window or
RANGE (HF) window whichever desired.
3. Rotate the [RANGE] switch to select the range desired.
3-8
Bottom lock
display
Vertical
line
Bottom
Measure length of line and
enter value in menu.
Bottom lock display
RANGE [LF]
30 ft
Switch [LF] and [HF] by
60 ft
pressing the [RANGE]
120 ft
switch.
250 ft
500 ft
1000 ft
1600 ft
3000 ft
Range window
1/1 LF
0
0 0
5
4
10
3
20
2
30
1
0
40
RANGE [HF]
30 ft
60 ft
120 ft
250 ft
500 ft
1000 ft
1600 ft
3000 ft