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7-1
ADVANCED LEVEL OPERATION
Finding Fish School Center
When you want to find the center depth of a fish school, use the
auto tilt function, which automatically scans the tilt angle within
the selected width.
Table 7-1 Automatic scan range at menu setting WIDE of OTHER
sub menu in the INIT SET/TEST menu
Range (m) Width (1) Width (2) Width (3) Period
75, 100
150, 200
300, 400
500, 600
800
1000
more than 1200
10°
"
"
8°
6°
4°
2°
16°
"
"
"
12°
8°
4°
20°
"
"
"
16°
12°
6°
every 6 transmissions
every 4 transmissions
every 2 transmissions
"
"
"
"
For example, when the RANGE control, TILT lever and WIDTH
key are set to 800 m, 8° and width (1), respectively, the tilt angle
varies at every transmission as follows:
8°→8°→10°→10°→12°→12°→14°→14°→12°→12°→10°→10°→
8° →8°→ 6°→6°→4°→4°→2°→2°→4°→4°→6°→6°→8°→
8°
Figure 7-1 Tilt angle setting
Table 7-2 Automatic scan range at menu setting NARROW of
OTHER sub menu in the INIT SET/TEST menu
Range (m) Width (1) Width (2) Width (3)
75, 100
150, 200
300, 400
500, 600
800
1000
more than 1200
4° *
2°
1°
"
"
"
"
6° *
4° *
2°
"
"
"
"
8° *
6° *
4° *
3°
"
"
"
Note: Period: every transmission
Tilt angle changes in 2° steps for asterisk-marked widths; 1°
step for all other widths.