Furuno FSV-30, Operator'S Manual

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2. HORIZONTAL MODE
2-25
TRACKING METHOD:
Selects tracking method, target mark (position) or fish.
INTERLOCK:
Provides automatic change of tilt angle and range or tilt angle
during target lock.
MARK INTERLOCK:
Selects items of numeric/graphic data display during target
lock operation.
ESTIMATE MARK: Displays fish histogram as estimate mark 1.
EST&HISTOGRAM: Under development.
TRACKING DATA:
Selects which tracking data to use; horizontal, or both
horizontal and vertical.
THRESHOLD:
Selects the weakest echo color number to track. The setting
range is 1 to 30.
TARGET SPEED LIMIT:
Sets maximum fish speed to track. The setting range is
1kt to 15kt.
SMOOTHING:
Sets smoothing rate for fish speed data. The setting range is 0.0
to 1.0.
TARGET SPD UPDATE:
Sets fish speed data update interval among 15, 30, 45
and 60 seconds.
TARGET LOCK WINDOW:
Selects size of target lock detection area; normal,
large, largest. However, this area is not displayed on the screen.
DIMENSION SETUP:
Sets dimension constant for calculation of fish school
tonnage from the fish school dimension.
VOLUME SETUP:
Sets volume constant for calculation fish school tonnage from
fish school volume.