Furuno FSV-75, Руководство оператора

Страница: 32 / 235

1. OPERATIONAL OVERVIEW
1-14
1.8 How to Adjust the Gain
The GAIN knob adjusts receiver gain (sensitivity). Adjust it so fish
echoes are clearly displayed with minimal noise on the screen. Too
high a gain setting not only displays excess noise and makes it diffi-
cult to discriminate wanted echoes but also causes bottom echoes
to be painted in strong colors, resulting in echoes being masked by
bottom reflections. Normally, set the control somewhere between
positions 3 and 7.
Turn the GAIN knob to adjust the setting. Turn the control clockwise
to increase the gain, counterclockwise to decrease the gain.
New gain setting is momentarily displayed in large characters at the
top of each display. The setting value is always displayed next to
“G”, at the top-right corner of the screen.
Note: The gain can also be adjusted from the gain indication. Select
the gain indication to highlight it, then spin the scrollwheel.
Gain too low
Gain proper
Gain too high
17° T
H-UP
P 8
40
50
H R 400m
G 1. 0
Place the cursor on the gain
setting, which is then highlighted.
Spin the scrollwheel to change
the setting.