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4. ADVANCED SETTINGS
4-8
4.6.2
Calibration menu
The external fish finder settings can be calibrated from the [Calibration] section of the
[External Echo Sounder] menu. To calibrate settings for the FCV-38, see
section 4.7.5.
Menu item
Description
[Zero Line Rejector]
Turns the zero line (transmission line) on or off. When
turned [On], the transmission line disappears, which al-
lows you to see fish echoes near the surface clearly. The
width of the transmission line changes with transducer
used and installation characteristics.
[Zero Line Area]
Adjusts the transmission line so that the transmission line
disappears when the [Zero Line Rejector] is turned on.
For a long tail, increase the value. If the transmission line
does not disappear, lower the TX power.
[Gain ADJ (HF)], [Gain ADJ
(LF)]
Stabilizes the gain, allowing for a clear picture when the
gain is set at a very low/high setting. This function is also
helpful in that it balances the gain between HF and LF im-
ages.
[TD fore-aft]
Sets the fore-aft position of the external Fish Finder’s
transducer. This setting is done at installation, do not
change this setting.
[TD port-stbd]
Sets the port-stbd position of the external Fish Finder’s
transducer. This setting is done at installation, do not
change this setting.
[ANT TD height]
Sets the height of the Satellite Compass
™
antenna above
the waterline. This setting is done at installation, do not
change this setting.
FCV-38[ver 0252473-xx.xx]