11. ECHO SOUNDER
11-11
11.4.4
How to adjust the gain
The gain controls how echoes of different strengths are displayed. Set the gain to
show a slight amount of noise on the screen. Increase the gain for greater depths and
lower the gain for shallow waters.
1. Press the
GAIN
key to show the [FISH FINDER GAIN (HF)] window. To show the
setting window for low frequency, press the
GAIN
key again.
Note 1:
The [FISH FINDER GAIN] window closes automatically when there is no
operation for 10 seconds.
Note 2:
For the dual frequency display, select the frequency to adjust by pressing
the
GAIN
key then go to step 2.
2. Set the gain to show a slight amount of noise on the screen (setting range: 0 to
10.0, 0.5 step).
3. Press the
GAIN
key to close the window. If setting the gain only for low frequency
(50 kHz), press the
GAIN
key twice to close the setting window. The setting win-
dow closes automatically after 10 seconds without pressing the
GAIN
key.
Note:
The
GAIN
key can be programmed for a different function (default setting: [FISH
FINDER GAIN]).
CAUTION
Use the proper gain setting.
Incorrect gain may produce wrong
depth indication, possibly resulting
in a dangerous situation.
Gain too high
Gain proper
Gain too low
Press the
GAIN
key.
Содержание GP-3700F
Страница 14: ...SYSTEM CONFIGURATION xii This page is intentionally left blank...
Страница 30: ...1 OPERATIONAL OVERVIEW 1 16 This page is intentionally left blank...
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Страница 74: ...4 MARKS LINES 4 14 This page is intentionally left blank...
Страница 92: ...6 ROUTES 6 8 This page is intentionally left blank...
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Страница 212: ...AP 12 APPENDIX 3 TIME DIFFERENCES...