To set the Keel Offset:
Press and hold the "UP" and “DOWN” keys until the K/O indicator begins to blink. (approximately 6 seconds).
Release the Keys.
Press the "UP” key to increase the Keel Offset value. Press the "DOWN" key to reduce the value.
The display will return to the normal operation mode after five seconds if no keys are pressed.
“K/O” will remain illuminated in the top left hand corner indicating that the depth readings are adjusted to the Keel Offset setting.
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