Target Mark Mode; Target Lock Menu Description - Furuno FSV-85 MARK-2 Operator's Manual

4. SLANT MODE
4.12.3

Target mark mode

This mode tracks a stationary position (such as a reef) using position data fed from a
navigator.
Depth
1. Select [Target Mark] in the procedure in section 4.12.1.
2. On the slant display, use the trackball to select the location to track.
3. Press the TARGET LOCK key.
Tilt, range and vertical bearing are automatically adjusted to track the location. Us-
ing the figure above as an example, the target lock mark is placed on location E.
Then, the equipment remembers the location of E and automatically changes the
tilt angle as the ship moves from position A through D. As long as the school of
fish E is stationary its echo is kept displayed on the screen.
4. To disable the target lock, press the TARGET LOCK key.
4.12.4

Target lock menu description

Target lock functions not previously mentioned are described below.
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)
Mark Inter- Turns numeric/graphic data displays On/Off in target lock. [OFF] turns off both the
lock estimate mark 1, 2 histogram 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.
Tracking Data During the slant mode, H/S display is adopted for all functions.
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.
Bottom When a target is judged as a bottom echo, raise this setting to differentiate bottom
Threshold from target. The setting range is 0 to 5.
Target Speed Sets maximum fish speed to track. The setting range is 1kn to 15kn.
Limit
Smoothing Sets smoothing rate for fish speed data. The higher the figure, the smoother the
position of the target lock target. Avoid oversmoothing, to prevent delay in tracking
when own ship or target moves suddenly. The setting range is 0.0 to 1.0.
Target SPD Sets the interval at which fish speed data is updated. The intervals are 15, 30, 45
Update and 60 seconds.
Target Lock Selects the size of target lock detection area; normal, large, largest. (The area is
Window not indicated on the screen.)
Dimension Sets dimension constant for calculation of weight (ton) of school of fish from the
Setup dimension of the school of fish.
Volume Setup Sets volume constant for calculation of weight (ton) of school of fish volume.
4-18
A B C D
E