System Setup menu with Reset Options command selected (left). The
Reset Options dialog box, with "Yes" selected (right).
NOTE:
Reset Options does not erase any waypoints, routes, plot trails, or sonar logs.
Reset Water Distance
The sonar chart's Digital Data display option includes a window that shows distance traveled, called Water Distance ("W Distance"). This information is calculated from an optional water speed sensor, not the GPS. The Water Distance window can be reset to zero using the Reset Water Distance command.
Press MENUMENU↓ to SONAR SETUPENT↓ to RESET WATER
DISTANCEENT. The menus are cleared and the water distance is reset to 0.00.
Set Keel Offset
This unit measures water depth from the face of the transducer. Since the transducer is installed below the water surface, the depth displayed by the digital depth, chart depth scale, chart cursor or fish symbols is not exact. If the transducer is 1 foot below the surface, and the screen shows the water depth as 30 feet, then the actual depth is 31 feet.
On sailboats or other large vessels with deep drafts, the distance between the transducer installation and the keel or lower engine unit can be several feet. In those cases, an inexact depth reading could result in grounding or striking underwater structure. The Keel Offset feature eliminates the need for the navigator to mentally calculate how much water is under his keel.
Keel Offset lets you calibrate the digital depth: chart depth scale, chart cursor depth and fish symbol depth displayed on the screen. To calibrate the depth indicators, first measure the distance from the face of the
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