Displaying the bottom hardness (BH value) on a graph (DEPTH & BH)
The relationship between water depth and the hardness of the bottom
can be displayed on a graph.
This graph can be displayed using the following procedure:
Display the main menu by pressing the
Move control to "GRAPH" by pressing the
then move control to the GRAPH SETTING submenu by pressing
Move control to "TYPE" by pressing the
Move control to "DEPTH/BH" by pressing the
The hardness of the bottom (BH) is displayed in white, and water
depth, in red.
In general, the tail width in the bottom echo depends on the
hardness of the bottom, as shown below. Bottom hardness is
automatically analyzed and displayed as a BH level from 1 to 8 to
provide a measure of bottom hardness.
Type of bottom material
See page 10 for the bottom discrimination mode.
Dual-display procedure: Proceed from the main menu to
"DISPLAY", "BTM. EXP. MODE", and "DISC.", in that order. See
key to return to the main menu.
key to return to the fishfinding display.
Dual display in bottom