Furuno FSV-85, Operator'S Manual

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2. HORIZONTAL MODE
2-26
2.13 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.
2.13.1 How to set the bearing
In the default setting, the audio function is on and the audio sector is 30°.
1. Operate the trackball to place the cursor on the direction you want to monitor
through the speaker.
2. Press the R/B AUDIO key.
The monitoring section is set on the bearing selected, in a 30°, 60°, 90°, 180° or 330°
sector centering the audio bearing mark. Echoes are monitored through the speaker.
Note: To erase the range mark and the data at the bottom of the screen, put the cursor
near own ship mark and press the R/B AUDIO key. Note that the audio bearing is
erased when [Audio] on the [Alarm & Audio] menu is turned off.
2.13.2 How to select the audio sector
Select the audio sector as follows. Note that you cannot see this sector on the display.
1. Press the MENU/ESC key to show the main menu.
2. Select [Others] then push the left-click button.
3. Select [Alarm & Audio] then push the left-click button.
Data for range and audio
bearing marks
Range marker
Audio bearing mark*
R 400m
B 45
°
A
* In target lock, the audio
bearing mark follows
tracked target.
Monitoring section