Furuno FCV-1900 - 1.12 Fish Size Histogram (FCV-1900 G)

1. OPERATION
1-14
1.12 Fish Size Histogram (FCV-1900G Only)
The fish size histogram window shows
approximate fish size in the dense fish
school The fish size histogram window
can be displayed on the dual frequency
and user display.
Notice for the fish size histogram
• This feature requires an appropriate
transducer. For the transducer com-
patible with this feature, see "EQUIP-
MENT LISTS" on the installation
manual (IME-23860).
• This feature is available when the transmission mode is set to [TruEcho CHIRP]
mode. The transmission mode is set by the installer.
• The echo strength of a school of fish changes according to the fish. When the size
shown on the fish size histogram differs from the actual size, adjust [Fish Size] on
the [Calib] menu to compensate for the difference (see page 2-7).
• A fish whose depth is shallower than 2 m can not be measured. Also, the maximum
range depends on the transducer’s performance, installation location, and seastate.
If the [Zero Line Rejection] on the [Calib] menu is turned on, the fish whose depth
is shallower than the transmission line can not be measured.
• In case of a school of fish, echoes overlap one another, so the margin of error will
be greater.
• It is not available to activate this feature and ACCU-FISH
™
simultaneously.
1.12.1 How to show the fish size histogram window
Note: Turn off [Split Range] on the [Range] menu to show the fish size histogram win-
dow.
1. Press the MENU/ESC key and open the [Setting] tab.
2. Select [Measurement], then push the ENTER knob.
3. When the menu items below [Graph Display] are grayed out, set [ACCU-FISH] to
[Graph].
1) Select [ACCU-FISH], then push the ENTER knob.
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Example: Measuring mode is [Entire Area] mode
Measuring areaMeasuring area
Fish size histogram windowFish size histogram window
Setting
Sounder
Display
Measurement
Alarm
Data
System
ACCU-FISH
[Graph Display]
Graph Style
Graph Size
Graph Location
Graph Scale End
Distributed Scale Start
Distributed Scale End
Number of graph bars
Transparency
Updating Cycle
[Mark Display]
Fish Info
Fish Symbols
Graph
Horizontal
Small
Upper Left
39inch
3%
50%
Max.16 bars
Off
3s
Size
Fish Mark
BBDS1
Telesounder