Furuno FSV-30 Operator's Manual page 74

2. HORIZONTAL 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.
H-SCAN COLOR
100
80
60
40
20
0
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.
2-44
DEFAULT CANCEL
20 40 60 80
Color response curve
QUIT
DEFAULT: Select to restore default
setting for selected color response.
CANCEL: Select to cancel change.
QUIT: Select to finish.
Currently selected color
100
Input level scale