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3. See the table below to adjust the calibration settings.
Name
[Draft]
[Gain Adj CHIRP HF/
*1
MF / LF]
[Gain Adj CW HF/ LF]
[Temp]
[Speed (STW)]
[Fish Size]
[Water Type]
[Zero Line], [Rejector]
[Zero Line], [Area]
[Bottom Detect]
*2
[Bottom Level XDR]
[Bottom Level XDR1]
*3
[Bottom Level XDR2]
*3
[Bottom Hardness]
[Heave Sensor Setting]
*1
: The items displayed will vary depending on the connected transducer.
*2
: Displayed for FCV-600 only.
*3
: Displayed for FCV-800 only.
4. Press the MENU/ESC key twice to close the menu.
To display the depth from the sea surface, set the ship's
draft value.
To set the gain higher or lower, or to adjust the balance of
gain between low frequency and high frequency.
*1
Compensates the errors in water temperature data. For ex-
ample, if the displayed value is 35.6°F (2°C) higher than the
actual water temperature, set "28.4°F" (-2°C) to correct.
Compensates the errors in vessel speed data. For example,
if the displayed value is 10% lower than the actual vessel
speed, set "+10%" to compensate.
Compensates the displayed value of the fish size.
Select whether to use in seawater or freshwater as the water
type. Salinity and other factors affect the speed of sound,
causing errors in depth display.
When set to [On], the oscillation line rejection function is ac-
tivated and fish school reactions near the surface can be
identified. The length of the oscillation line tailing off varies
depending on the type of transducer and the installation con-
ditions. If you are using a transducer with an oscillation line
longer than 4.5 ft, change the setting in the [Area] menu be-
low.
This setting is enabled when the [Rejector] is set to [On]. If
the tail of the oscillation line is long, set a higher value. If the
oscillation line does not disappear, decrease the value of the
transmit output.
Depending on the installation of the transducer, tailing of the
oscillation line or reverberation echoes may be shown as
seabed. In such cases, set a higher value. Shallower depths
than the set value will no longer be detected.
The factory default setting is "0" and continuous strong echo
level is recognized as seabed. If the depth display is unsta-
*3
ble, adjust the bottom detection level. If a line appears in the
/
seafloor line magnification screen, lower the bottom level to
make the line disappear.
Note: If the bottom level is set too low, a dense school of fish
may be detected as seabed.
Compensates the NMEA0183 output hardness value.
See section 3.5.
40
3. INITIAL SETTINGS
Explanation
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