Furuno CH-300 Operator's Manual page 41

To adjust TVG:
1. Press the MENU key to open the menu.
2. Press ▲ to choose MENU and then press ◄ or ► to choose HORZ.
MENU
TVG LEVEL
TVG DISTANCE
RES. COLOR
CLUTTER
TARGET KEY
LOCK MODE
AUTO TILT
: SELECT
3. Press ▲ or ▼ to choose TVG DISTANCE and press ►. The following dialog box
appears.
TVG DISTANCE
Hi
Lo
200m
4. Press ◄ or ► to adjust TVG distance between 3.0 and 5.0 (130-320 m). As a general
rule, use a higher setting for low-frequency transducer; a lower setting for high frequency
transducer. The larger the figure the greater the distance at which TVG works. When you
open the TVG dialog box the TVG line changes from solid to dashed and a solid line
denotes current TVG setting.
TVG Distance
0
Setting
Meters 3
Feet 10
Passi/braza 2
Hiro 2
COM1 COM2 HORZ
4.0
4.0
LOG
0
ECHO
AUTO
OFF
: CHANGE
HORZ menu
4.0
0.5 1.0 1.5 2.0
8 20 40 60
30 70 130 210 330 410 520 660 820 1040
5 10 20 40
5 10 20 40
VERT ES PRESET
MENU: END
2.5 3.0 3.5 4.0
100 130 160 200 250 320
60 80 100 120 150 180
60 80 100 130 170 210
2. HORIZONTAL MODE
SYS
4.5 5.0 . . . . 10.0
. . . . 1000
3280
600
. . . . 660
2-15