ZOOM mode (high or low frequency)
Three types of zoom displays are available: marker zoom,
bottom zoom. The zoom mode to be used can be selected on the main menu with ZOOM MODE.
Normal | This mode expands selected area of the normal picture to | |
full vertical size of the screen on the | ||
display | ||
may specify the portion to expand with the VRM (Variable | ||
Variable range | ||
Range Marker), which you can shift with [ ]or [ ]. The | ||
marker(green) | ||
| area between the VRM and the zoom range marker is | |
This section | expanded. The length of the segment is equal to one | |
is zoomed | division of the depth scale. |
display (yellow)
| MARKER ZOOM |
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| Zoom marker (yellow) | This display provides a compressed normal picture on the | ||
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| top 2/3 of the screen and a 5 or 10 meter (10 or 20 feet) |
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| wide layer in contact with the bottom is expanded onto the |
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| bottom 1/3 of the screen. This mode is useful for bottom |
| Normal | discrimination. Note that the seabed should be steadily | ||||
| display | and distinctly plotted in red or | ||||
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| gain if necessary. |
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| Note1:The |
| Bottom- | system menu. | ||||
| lock | Note2:The zoom marker can be turned on/off on the | ||||
| display | system menu. | ||||
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| This mode expands bottom and bottom fish echoes two to |
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| five times to vertical size of the screen, and it is useful for |
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| determining bottom hardness. A bottom displayed with a |
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| short echo tail usually means it is a soft, sandy bottom. A |
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| long echo tail means a hard bottom. |
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| Zoom | The zone automatically moves so that the bottom echoes |
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| marker | locate on the lower half of the screen. |
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| (yellow) | Note1:The amount of expansion can be selected on the |
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| system menu. |
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| Note2:The zoom marker can be turned on/off on the |
| Bottom- |
| zoom |
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| Normal |
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BOTTOM ZOOM