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2. HORIZONTAL MODE
2.9.3
Interference rejector
This control is similar to the interference rejector on echo sounders and radars. It is
effective for rejecting random noise and sea surface reflections in rough sea condi-
tions. Set it so that noise is just eliminated. Do not use an unnecessarily high setting
since it may also reject small, wanted echoes.
1. Press the MENU/ESC key to show the main menu.
2. Click [Picture Setting].
3. Press the H/V/S key to select the [H1]
or [H2] tab.
4. Click [Int Reject].
5. Click
The setting range is 0 to 3. The de-
gree of rejection in ascending
strength is 2, 1, 3. "0" disables the in-
terference rejector.
6. Click [Quit] on the setting box to close the box.
7. Long-push the MENU/ESC key to close all menus.
2.9.4
Shift TX frequency
If the interference cannot be suppressed by the interference rejector or change in TX
interval, change the TX frequency from the [Freq Shift] menu.
1. Press the MENU/ESC key to show the main menu.
2. Click [TX/RX Setting].
3. Press the H/V/S key to select the [H1] or [H2] tab.
4. Click [Freq Shift].
5. Click
6. Click [Quit] on the setting box to close the box.
7. Long-push the MENU/ESC key to close all menus.
2-14
or
to change the setting.
or
to change the setting, among [Low], [Mid], [High].
Picture Setting
H1 P1
H2 P1
Echo Average
Int Reject
Smooth Echo RNG
Smooth Echo CIR
Quit
V P1
: 3
: 2
: 2
: 0
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Table of Contents
Troubleshooting
