Furuno FSV-84 manual Numeric

4. SLANT MODE

4.16Comparing Fish School Concentration

You can get an estimate of the volume of two fish schools by using the two ESTIMATE keys as follows:

1.Operate the trackball to place the trackball mark on a fish school, and then press the [ESTIMATE 1] key.

2.The estimate mark appears on the fish school. Relative volume is shown by a figure between 0 and 100, below the estimate mark. When the area inside the mark is filled in reddish brown, volume figure is said to be “100”.

3.Operate the trackball to place the trackball mark on another fish school and press the [ESTIMATE 2] key.

4.Compare estimate figures for each fish school by observing estimate mark data and the fish histogram.

5.To turn off the estimate marks press their respective keys.

Estimate mark 2

N

North mark 2

1	85	NUMERIC/
Estimate mark 1		GRAPHIC
W		E

35	DATA
	DISPLAY
	2000

S

Estimate mark 2 data

Estimate mark 1 data

Estimate marks and their data

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