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5-1
ADVANCED OPERATION
Measuring the Range and Bearing to a Target
Operate the trackball to place the trackball marker (+) on the
target you want to measure the range and bearing. The range
and bearing are displayed at the top left corner on the screen.
B
Slant range
Horizontal range
Depth
Bearing
Trackball marker
Figure 5-1 Location of range and bearing indications
Note: The bearing is shown in either 360° or 180° indication
system relative to the ship’s heading. In the latter case, “B” is
indicated as follows:
B P ------- on the port side
B S ------- on the starboard side
The 360° or 180° indication system can be selected on Menu-2.
Detecting Fish Schools Aurally
Occasionally you will be preoccupied with other tasks and un-
able to concentrate on watching the sonar picture. In such cases
you can use the audio function to aurally monitor fish echoes
through the built-in speaker.
1. Operate the trackball to move the trackball marker to the
direction you want to monitor through the speaker.
2. Press the R/B key. The bearing marker will appear in the
direction of the trackball mark and echoes in that direction
are monitored through the speaker. Adjust the volume with
the AUDIO control on the front panel.
3. To turn off the audio function, erase the bearing marker by
placing the trackball marker near own ship marker and press-
ing the R/B key.