Furuno FSV-75, Руководство оператора

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2. SLANT MODE
2-25
2.14 How to Detect Schools of Fish Aurally
Sometimes you may be preoccupied with other tasks and unable to concentrate on
watching the sonar picture. In such cases it would be a good choice to use the audio
function. This function enables you to monitor echoes from schools of fish and bottom
through the external speaker (optional supply).
2.14.1 How to turn the audio on/off
1. Open the menu.
2. Select [0 Mark & Operation Support Tool], then
left-click.
3. Select [9 Alarm & Audio], then left-click.
4. Select [5 Audio], then left-click.
5. Select the appropriate item, then left-click.
• [OFF]: Disables the audio feature.
• [Audio1]: Enables the audio feature; sound is
released for approaching fish and departing
fish at the same volume.
• [Audio2]: Enables the audio feature; sound re-
leased for approaching fish increases in volume. For departing fish the volume
decreases.
6. Select [Quit], then left-click.
7. Close the menu.
When audio is active
With the appropriate data input (see "DATA INPUT REQUIREMENTS" on page AP-
12) and the audio feature is active, the audio bearing marker appears on the screen.
If the setting for [7 Audio Sector] (see section 2.14.2) is set to other than [OFF], the
auto sweep is automatically activated. The sweep range is the center of the selected
sector and the auto sweep marker appears on-screen. The bearing marker also
moves according to any changes made to the settings. When the bearing marker
sweeps over a school or bottom echoes, the speaker releases the selected audio.
S
Bow
Audio sector
center
Auto sweep
marker Auto sweep
marker
Audio bearing
marker*
*: When target lock is
active, the audio
marker follows the
tracked target.
Range marker
R : indicates range from own ship to range marker.
B : indicates audio marker bearing.
Auto sweep
range
Audio ]Sector Audio ]Sector
R 400m
B 45°