Interference Rejector; Shift Tx Frequency - Furuno FSV-25 Operator's Manual

2.9.3

Interference rejector

The interference rejector suppresses randomly appearing noise, sea surface reflec-
tions, and interference from other acoustic sounding equipment. 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] or [Int Reject (ES)].
• [Int Reject]: Use this item to sup-
press sea surface reflections, and
sea surface reflections.
• [Int Reject (ES)]: Use this item to
suppress interference from other
acoustic sounding equipment.
5. Click
• [Int Reject]: The setting range is 0 to 3. The degree of rejection in ascending
strength is 2, 1, 3. "0" disables the interference rejector.
• [Int Reject (ES)]: Use this item to suppress interference from other acoustic
sounding equipment. The degree of rejection in ascending strength is 1, 2, 3.
"0" disables the interference 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.
or to change the setting.
or to change the setting. The setting range is -20 to 20.
2. HORIZONTAL MODE
Picture Setting
H1 P1
H2 P1
Echo Average
Int Reject
Int Reject (ES)
Smooth Echo RNG
Smooth Echo CIR
2nd Echo Rej.
Quit
V P1
: 3
: 2
: 2
: 2
: 0
: 0
2-15