Furuno GP-3700F, Руководство оператора

Страница: 168 / 224

11. ECHO SOUNDER
11-20
11.15 ACCU-FISH
™
The ACCU-FISH
™
feature, which requires an ACCU-FISH
™
capable transducer, cal-
culates the length of each fish and shows a fish symbol and depth value or fish length.
Usage guidelines
• This feature requires an ACCU-FISH
™
capable transducer. For details, see
“EQUIPMENT LIST” in the installation manual.
• This feature is intended for reference purposes; it is not a completely accurate mea-
surement of fish length.
• The intensity of an echo depends on fish species. If the indicated length is different
from the true length, you can apply an offset on the menu (see section 11.15.2).
• Fish at depths of less than two meters cannot be measured. However, if [ZERO
LINE REJECTION] is set to [ON], fish within the area covered by the transmission
line cannot be detected (see section 11.19).
• This feature cannot be used with the transducer installed inside the hull. Depending
on the transducer frequency, fish may not be detected. Further, even if fish are de-
tected, their indicated length may be smaller than the actual length.
• In a school of fish, the echoes overlap. This causes a greater margin of error in fish
size measurement.
• The TX pulse length changes according to ACCU-FISH
™
On/Off state. This causes
a difference in both sensitivity and the echoes viewed.
11.15.1 How to set up ACCU-FISH
™
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [8. ECHO SOUNDER INITIAL SETTING].
4. Select [3. ACCU-FISH SETTING].
5. Select [FISH INFORMATION].
6. Select [FISH SIZE], [WATER DEPTH] or [OFF].
[FISH SIZE]: Shows fish size.
[WATER DEPTH]: Shows depth to the fish.
[OFF]: Turns off ACCU-FISH
™
.
7. Select [DISPLAY SIZE].
8. Select the text size for fish information from [SMALL] or [LARGE].