Standard Horizon Ff520 - Manual (Page 25)

FF520 Page 27
automatically tracks the range around the bottom specified by the Bottom Range value.
Depth : Moves the display from showing the bottom to the depth value entered.
Shift : Shifts the display from the bottom of the transducer to the depth value entered.
Example
Your vessel is in about 57FT of water, however there is fish suspended in 35FT of water.
You want to display to 10FT area around the fish. Shift would be set to 25FT and Depth would
be set to 35FT shown in example below.
Figure 4.3a - Example of Depth and Shift
NOTE
The options under Range Mode change depending on the current Range Mode.
4.4 INTERFERENCE REJECTION
Selects a filter to remove noise from other sources to external noises.
4.5 SENSITIVITY MENU
The Sensitivity menu is accessible both from the Fish Finder Setup menu and by pressing
[ENTER] when in Fish Finder pages. All settings in the Sensitivity menu are related to the
Frequency.
Figure 4.5 - Sensitivity sub-menu
Gain (*) : Allows you to control the sensitivity of the unit's receiver. To see more detail, increase the
receiver sensitivity by selecting a higher gain percentage. If there is too much detail or if
the screen is cluttered, lowering the sensitivity may increase the clarity of the display.