Range] Menu - Furuno FCV-1900 Operator's Manual

2. SYSTEM MENU
2.3

[Range] Menu

The [Range] menu includes the items relevant to the range setting.
Note: When the depth unit is changed all range settings are restored to default. There-
fore, it is a good idea to change the depth unit first and then change ranges.
[Range1] - [Range8]: Set the range of each of the eight ranges.
[Zoom Range]: Set the range to zoom in the bottom zoom and marker zoom modes.
Note: For the horizontal split screen, the range is one-half the value set of [Zoom
Range] or [B/L Range].
[B/L Range]: Set display range for bottom lock and bottom discrimination displays.
[Discrim Zoom]: Select the type for the bottom discrimination display.
• [1/2]: Shows the single picture on the right half of the screen and the bottom discrim-
ination display on the left half of the screen. The bottom discrimination display
shows the bottom as a straight line, which is useful for determining bottom hard-
ness.
• [1/3]: This display is similar to the bottom discrimination 1/2 display except the bot-
tom discriminator display occupies the bottom one-third of the left half of the screen.
[Split Range]: Split range enables/disables independent adjustment of range in the
dual frequency display. Turn on for independent adjustment. Effective in dual frequen-
cy mode only.
[Auto Range]: Turn on/off the auto range mode. When the auto range mode is active,
the range is automatically changed to keep the bottom echo on the lower half of the
screen. The range shift and gain control are inoperative in the auto range mode. Also,
"RANGE AUTO" appears at the upper right on the screen when the RANGE key is
operated.
2-4
Range1 30ft
Range2 60ft
Range3 120ft
Range4 250ft
Range5 500ft
Range6 1000ft
Range7 1600ft
Range8 3000ft
Zoom Range 16ft
B/L Range 16ft
Discrim Zoom 1/2
Split Range Off
Auto Range Off