cation of bottom hardness: the longer the echo, the harder the bot- tom. In addition, as you become acquainted with this mode, you may find a small school of bottom fish which might otherwise be overlooked on the other displays.
Bottom zoom display
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| CSE 180.0° | SPD | 16.8kt |
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| DEP 113.6 ft | TMP 16.0 °C |
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| POS 34° 26.245' N | 135° 41.232' E |
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Normal display
Display range marker
Figure 3-5 Bottom zoom display
Note: The zoom range can be selected on the VIDEO SOUNDER SETUP menu.
Marker zoom
This mode expands any location on the normal display to full ver- tical size of the screen on the left half of the screen. You may specify the portion to expand with the VRM and the display range marker.
Marker zoom display
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| CSE 180.0° |
| SPD | 16.8kt |
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| DEP 113.6 ft | TMP 16.0 °C | 12.0V | |||||||||
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| POS 34° 26.245' N | 135° 41.232' E |
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Normal display
VRM (Variable Range Marker)
Display range marker
Figure 3-6 Marker zoom display
3 – 4