Bottom/3D Menu Operation - Furuno CH-37 Operator's Manual

3.9 Bottom/3D Menu Operation

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Basic procedure
1. Press the MENU key on the sub panel 2.
2. Select BOTTOM/3D with the arrow keys in the sub panel 2.
3. Select item and setting with the arrow keys. The selected
item is highlighted and the current setting is circumscribed
in white.
4. To return to the BOTTOM/3D menu, press the menu key
again.
MENU
TVG (LEVEL)
TVG (TIME)
BEAM WIDTH
AUTO TRAIN SECTOR :
VERT. ECHO OVERLAY :
3D VIEW SCALE
TIME SCALE
(or DISTANCE SCALE
EXIT
Figure 3-9 Bottom/3D menu
Bottom/3D menu description
TVG (Level): Controls the receiver sensitivity in short to me-
dium ranges to eliminate surface noise, which may mask shal-
low targets.
TVG (Time): Determines the TVG effective depth.
BEAM WIDTH: Sets the vertical beam width. Select narrow for
general use. The wide beam width is useful for searching a
wide area vertically but fish detection range is shortened since
the transmitted power attenuates.
AUTO TRAIN SECTOR: Sets the train sector; 90 , 180 , or
360 . Use a wide sector to conduct a general search, narrow-
ing it once a fish school is detected.
VERT. ECHO OVERLAY: Turns the E/S combination display
on/off. (Requires external E/S.)
: SONAR BOTTOM/3D
: 3.0
: 3.0
: NAR WIDE
90 180
OFF ON
: TIME DIST
: 1/1 1/2
500 1000)
: PRESS MENU KEY
DUAL E/S
360
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