Furuno FSV-75, Operator'S Manual

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2. SLANT MODE
2-23
2.12.4 Target lock menu description
Target lock functions not previously mentioned are described below.
Page 1
[2 Tilt Interlock] Provides automatic change of tilt angle and range or tilt
angle in target lock. Setting range: [OFF] (no automatic
change), [Tilt ] (tilt angle), [Tilt & Range] (tilt angle and
range)
[3 Mark Interlock] Turns numeric/graphic data displays On/Off in target
lock. [OFF] turns off both the estimate mark 1, 2 histo-
gram and data display. [Estimate Mark] enables the esti-
mate mark 1, 2 histogram. [Est & Fish Info] enables the
both the estimate mark 1, 2 histogram and data display.
Page 2
[1 Threshold] Selects the minimum signal level to use in target lock
tracking. The setting range is 1 to 30. Target lock tracks
a target whose signal level is greater than set here.
[2 Bottom Threshold] When a target is judged as a bottom echo, raise this set-
ting to differentiate bottom from target. The setting range
is 0 to 5.
[3 Target Speed Limit] Sets maximum fish speed to track. The setting range is
1kn to 15kn.
[4 Smoothing] Sets smoothing rate for fish speed data. The higher the
figure, the smoother the position of the target lock target.
Avoid over-smoothing, to prevent delay in tracking when
own ship or target moves suddenly. The setting range is
0.0 to 1.0.
[5 Target Speed Update] Sets the interval at which fish speed data is updated. The
intervals are 15, 30, 45 and 60 seconds.
[6 Target Lock Window] Selects the size of target lock detection area; normal,
large, largest. (The area is not indicated on the screen.)
[7 Dimension Coefficient] Sets dimension constant for calculation of weight (ton) of
school of fish from the dimension of the school of fish.