Garmin CS 1522, Руководство пользователя

Страница: 49 / 74

3.3 Clutter 47
3.3.5 Reducing Surface Noise
You can enable this setting to reduce clutter near the surface. Noise may appear near the
surface when the sea is rough or when your boat passes over a wake. Wider beam widths
can also result in more surface noise.
60�1
0�00 007
f
t
f
t
°
M
0
10
20
30
40
50
60
N 25°45�563'
W080°10�426'
70
80
86
Surface noise
NOTE: Not available in SideVü mode.
Select Surface Noise to toggle the setting on/off.
3.3.6 Adjusting Echo Stretch
You can expand or contract sonar returns (see 2.4.2 for more information).
NOTE: Not available in ClearVü and SideVü modes.
Select Echo Stretch and make a selection:
• Manual allows you to adjust the stretch manually using the main knob or the control
pad.
• Off turns off the shift.
3.3.7 Adjusting TVG
You can adjust TVG for a more consistent level of gain (see 2.4.4 for more information).
Select TVG and select a setting.