Calibration
The ‘Cal’ (Calibration) tab contains calibrations fields for ‘Keel Offset’, and ‘Water Type’ (salt or fresh). These calibrations help to ensure the Fishfinder 100 will provide the most accurate readings at all times. To access the ‘Calibration’ tab, use the arrow keys to highlight it.
Keel Offset
The ‘Keel Offset’ field allows the user to offset the surface reading for the depth of a keel. Enter a positive number to offset for a keel. It is also possible to enter a negative number to compensate for a large vessel that may draw several feet of water. The ‘Keel Offset’ will be reflected in the depth reading.
To Set a Keel Offset:
1.Highlight the ‘Calibration’ tab on the Setup Menu.
2.Highlight the ‘Keel Offset’ field and press ENTER.
3.Using the arrow keys enter a new offset, press ENTER to accept the new setting.
Water Type
Since sound waves travel through fresh and salt water at different rates it is necessary to select the ‘Water Type’ to ensure accurate readings on the unit.
To Change the Water Type:
1.Highlight the ‘Calibration’ tab on the Setup Menu.
2.Highlight the ‘Water Type’ selection field and press ENTER.
3.Choose ‘Fresh’ or ‘Salt’, press ENTER to accept the selection.
Unit Operation
Setup Menu/Calibrations
Transducer at Surface |
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Enter (+) positive number to | Transducer at Bottom of Keel | |
show depth from bottom of | ||
Enter | ||
keel | ||
depth from surface | ||
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| 25 |