2. HORIZONTAL MODE
2-17
2.9.6
Reverberation
You can reduce the strength of reverberation from sea-surface, sea-bottom and plank-
ton layer, with [Reverberation] on the [TX/RX Setting] ([H1] or [H2] tab). The setting
range is 0 to 3. The reverberation setting is automatically set to “0” when the range is
100 m or less. The larger the setting, the greater the reduction in reverberation. Select
a value that reduces reverberation while showing echo signals clearly.
2.9.7
Echo average
[Echo Average] ([H1] or [H2] tab) on the [Picture Setting] menu adjusts echo
afterglow - the amount of time an echo signal remains on the screen. This feature can
be useful for watching echo movement. The setting range is 0 to 11.
Setting between 1 and 7
: Echoes are gradually displayed and afterglow remains on
the screen longer as the setting is increased.
Setting between 8 and 11
: Echoes are quickly displayed and afterglow remains on
the screen longer as the setting is increased.
2.9.8
2nd echo rejection
A target that is farther than the repetition interval of transmission may appear as a vir-
tual image on the screen one time later. This is called secondary echo. Reflections
from tracks are so strong that secondary echoes appear easily. To remove secondary
echoes, set [2nd Echo Rej.] (located on the [H1] tab of the [Picture Setting] menu) to
other than “0” (OFF),
2.10
How to Adjust Beamwidth
The width of the horizontal and vertical beam can be adjusted from the [TX/RX Setting]
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 [Hor. Beam Wid] or [Ver. Beam Wid].
5. Click
S
(raise setting) or
T
(lower setting) to adjust the beamwidth. The setting
range is 0 to 4. The higher the setting the sharper the beamwidth.
6. Click [Quit] on the setting box to close the box.
7. Long-push the
MENU/ESC
key to close all menus.
TX/RX Setting
Quit
H1 P1
H2 P1
V P1
TX Interval
: 9
TX Pulse Length
: 9
TX Power
: 9
Reverberation :
0
Freq Shift
: 0
Hor. Beam Wid
: 4
Ver. Beam Wid
: 4
Summary of Contents for FSV-2S
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Page 74: ...2 HORIZONTAL MODE 2 44 This page is intentionally left blank ...
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