There are two bottom discrimination displays as follows.
Graphic display
Probability display
The most probable bottom material is indicated. The probability of bottom material is indicated
graphically.
Notes
The bottom discrimination function is intended to provide an estimate of bottom
composition. Actual composition may be different from the discrimination result.
The transducers that support the bottom discrimination function are as follows:
When the bottom discrimination function is active, the high and low frequencies are
alternately transmitted even in the single frequency display mode. Also, the
transmission interval of this equipment becomes slower than conventional fish finders.
Use this function at the water depth of 5 to 100 m.
Use this function at the ship speed of 10 knots or less.
This bottom discrimination function uses the range from the boat’s draft; therefore,
be sure to enter the ship’s draft.
If transducers are not mounted straightly, the bottom material may not be analyzed
accurately.
How to activate the bottom discrimination function
Touch control:
1.
Press the
MENU/ESC
key to open [MENU].
2.
Tap [DISPLAY].
Probability bar
Graph example
Mud probability (approx. 25%)
Sand probability (approx. 25%)
Rock probability (approx. 50%)
Bottom discrimination
display
Rock
Gravel
Sand
Mud
Rock
Gravel
Sand
Mud
Rock
Gravel
Sand
Mud
Rock
Gravel
Sand
Mud
Transducer (optional)
3-22
3
.
FISH FINDER
