Furuno FCV-30 Operator's Manual page 61

(Continued from previous page)
Menu item
Measurement tab
Fish gain
Measurement threshold
Measuring area
Manual area (vertical)
Manual area (horizontal)
Bottom trace area.
Calibration value
Unit tab
Unit
The strength of the returning echo varies with fish species. Adjust
the fish gain according to fish species to get actual fish length
distribution on the fish histogram display.
Set measurement threshold (2-20(cm)) for the fish histogram
display. For example, if you do not want to measure fish less than
10 cm in length, enter 10.
Select how to measure fish. The choices are Manual, All, Specific
location and bottom trace.
For manually setting measurement area.
For manually setting measurement area.
For bottom trace, set the distance to measure from the bottom.
Set TS (echo strength of individual fish) value. If a calibration
sphere was used its value is shown. This value may be fine tuned.
For further details, see paragraph 3.8. The larger the calibration
figure the longer the length of individual fish, even if received signal
is the same.
Selects the units of measurement.
TS: Displays echo strength from single fish.
L(cm): Displays fish length in centimeters.
L(inch): Displays fish length in inches.
W(g): Displays weight of fish.
2. WINDOW DISPLAYS
Description
2-7