Furuno CH-250 User Manual
Page 32
2-14
To adjust TVG:
1. Press the [MENU] key to open the menu.
2. Press to select MENU and then press to select HORZ.
TVG LEVEL
4.0
TVG DISTANCE
4.0
GAIN ADJUST
0
RES. COLOR
LOG
CLUTTER
0
TARGET KEY
REVERSE
: SELECT
: CHANGE
MENU: END
MENU
COM1
VERT
ES
PRESET
SYS
COM2
HORZ
LOCK MODE AUTO
AUTO TILT OFF
Figure 2-15 HORZ menu
3. Press or to select TVG DISTANCE and press . The following dialog box appears.
4.0
200
TVG DISTANCE
Hi
Lo
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
Setting
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 . . . .
10.0
Meters
3 8 20 40 60 100
130
160
200
250
320 . . . .
1000
Feet
10 30 70 130
210
330
410
520
660
820
1040
3280
Passi/braza
2 5 10 20 40 60 80 100
120
150
180
600
Hiro
2 5 10 20 40 60 80 100
130
170
210 . . . .
660