Furuno FSV-84 manual Scan Color

4. SLANT MODE

COLOR RESPONSE…: Adjusts reflected echo strength versus echo color level for currently selected color response number.

To adjust the curve, place the trackball at the point desired and press the [MENU] key. On the horizontal axis input level relative value is shown in the range from 0 to 100%. The setting range for input level is 0-100% in increments of 10% and output level is 0-100% in any value.

To set input level versus output level, use the trackball to place the trackball mark on location desired and press the [MENU] key.

S-SCAN COLOR	DEFAULT	CANCEL	QUIT	DEFAULT: Select to restore default
100
				setting for selected color response.
				CANCEL: Select to cancel change.
80				QUIT: Select to finish.

60

40

20

Currently selected color

0 20 40 60 80 100

Input level scale

Color response curve

GAIN OFFSET: Adjusts gain level. If the front panel [GAIN] control does not provide satisfactory gain adjustment, enter an offset here. The setting range is 0-12.

SIGNAL LEVEL: Dirty water or reflections from plankton may be painted on the screen in green or light-blue. These echoes may be erased in order of strength. The setting range is 0-15.

FAR TVG CURVE: Selects the TVG curve to use. The setting range is TVG1-TVG4. The higher the setting the sharper the gain curve.

ABSORPTION COEFF: Attenuation of the acoustic pulse underwater varies with sea area and water temperature. This menu item is provided to offset absorption, however the default setting is suitable in most cases. If sensitivity decreases with distance, increase the absorption coefficient setting. And if it increases with distance decrease this setting.

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