Keel Offset - Plastimo ECHOFISH 820 Manual De Instalación Y Funcionamiento

To set the Echo Style:
1) Press MENU to enter into menu setting.
2) Use the Up/Down Arrow to select Display option.
3) Press Right Arrow to enter into Display setting.
4) Use the Up/Down Arrow to select the Echo Style option.
5) Press Right Arrow to enter into the setting.
6) Press Up/Down Arrow to change the option.
7) Press ENT to confirm the setting.
8) Press EXIT to exit the menu setting.
13.

Keel Offset

For all Fishfinder, the transducer is installed underwater.
So, there is a distance from the transducer surface to wa-
ter surface. And the sonar unit only detects the distance
from transducer surface to bottom. So, the depth display
on the screen is not the actual water depth. For example,
if the transducer is installed 2feet below the water surface,
and the screen shows the water depth as 40feet, then the
actual water depth is 42feet. By Keel Offset, you can cali-
brate the depth displayed on the screen. First, measure
the distance from the transducer surface to water surface,
then set a value (for example, 3.5 feet).
To set the Keel Offset
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Echofish 820 – Installation & Operation manual