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4. ADVANCED SETTINGS
4-7
4
4.6.1
Sounder menu
You can adjust several echo display settings for the external sounder from the [Sound-
er] section of the [External Echo Sounder] menu. To adjust settings for the FCV-38,
see section 4.2.
HF and LF menus
Menu item
Description
[Interference]
Rejects interference from other equipment. See
section 1.10.
[Smoothing]
Smooths echo presentation when enabled. Turn smooth-
ing on when echoes appear "spotty" or "jagged". See
section 1.11.
[Clutter]
Low intensity "speckles" caused by sediments in the wa-
ter or noise, may appear over most of screen. These
speckles can be suppressed by adjusting the [Clutter].
See section 1.12.
Menu item
Description
[TVG Level]
Adjusts the TVG (Time Varied Gain) level. See
section 1.27.
[STC]
Sensitivity Time Control. Remove unwanted echoes near
the surface. Use this function when you want to see fish
near the surface clearly.
Sets the STC value according to your requirement. A set-
ting of [0] disables the STC.
Note:
A high STC setting can erase fish echoes. It is rec-
ommended to watch your display when adjusting the
STC.
FCV-38[ver 0252473-xx.xx]
HF menu
LF menu