36
3.OPERATIONS
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:
1
Display the main menu by pressing the
and
keys together.
2
Move control to "GRAPH" by pressing the
or
key, and
then move control to the GRAPH SETTING submenu by pressing
the
key.
3
Move control to "TYPE" by pressing the
or
key.
4
Move control to "DEPTH/BH" by pressing the
or
key.
5
Press the
MARK
key to return to the main menu.
6
Press the
GRAPH
key to return to the fishfinding display.
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.
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
page 32.
Main menu
GRAPH
MAIN MENU
DEPTH＆BH
STD. 1 2 3
STD. 1 2 3
10
5
OFF AUTO RANGE
AUTO SHIFT
PRESET
▲▲
GOTO SUB MENU
GRAPH
▲
▲
▲
▲
▲
▲
▲
▲
COLOR MODE
BACK COLOR
USER COLOR
D I S P L A Y
G R A P H
A L A R M
STD. RANGE
ZOOM RANGE
BOTTOM RANGE
AUTO MODE
CLOSE MENU
GRAPH CLOSE MENU
▲
▲
MARK RETURN TO MAIN MENU
GRAPH SETTING
DEPTH/BH
▲▲
ON
D E P T H
T E M P
T I M E
+15。
C
100m
1（HOUR）
200m
+20。
C
GRAPH SETTING
Dual display in bottom
discrimination mode
Type of bottom material
Tail size
BH level
Rock
Long
8
Gravel
↑
↑
Sand
↑
↑
Mud
Short
1
