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2. HORIZONTAL MODE
2-16
1. Press the [MENU] key to open the main menu.
2. Select H-SCAN SETTING with the trackball and press the [MENU] key to
open the H-SCAN SETTING menu.
H-SCAN SETTING
TX INTERVAL
TX PULSE LENGTH
TX POWER
TVG-NEAR
: 9
: 9
: 9
: 0
TVG-MEDIUM
TVG-FAR
NOISE LIMITER
AGC
2ND AGC
ECHO AVERAGE
: 0
: 0
: 2
REVERBERATION : 0
: 0
MENU QUIT
INT REJECT
: 0
: 0
: 0
QUIT
OTHERS...
FREQ SHIFT : 0
FREQ/BEARING SET : 180
NEAR AGC : 0
BOTTOM SUPPRESS : 0
SIDELOBE SUPPRESS : 1
H-SCAN SETTING menu
3. Select TVG-NEAR with the trackball and press the [MENU] key to show the
dialog box.
QUIT
CANCEL
Numeric data entry dialog box
4. Use the trackball to select S or T and press the [MENU] key to set. The
setting range is –5 to 5. The higher the setting the greater the TVG effect.
5. Select QUIT and press the [MENU] key.
6. Repeat steps 3-5 to set TVG-MEDIUM and TVG-FAR.
When sea surface reflections or plankton layers disturb the picture, decrease
appropriate TVG option by one or two steps.
7. Select QUIT at the top of the menu screen and press the [MENU] key to
close all menus.