3. VERTICAL MODE
3-14
3.12.2
V-SCAN SETTING menu description
TX PULSELENGTH:
Chooses Tx pulselength. For further details see “3.8.2 By
decreasing pulselength” on page 3-9.
TVG-NEAR,-MEDIUM,-FAR:
Adjust TVG level. For further details see “3.7
Eliminating Weak Echoes” on page 3-7.
NOISE LIMITER:
Suppresses weak unwanted reflections. For further details see
“3.9.3 Noise limiter” on page 3-10.
AGC:
Suppresses bottom echo tail. For further details see “3.8.1 AGC” on page
3-9.
ECHO AVERAGE:
Adjusts echo afterglow, which can be useful for watching
echo movement. The setting range is 0-3 and the default setting is 0. The higher
the number the longer echoes remain on the screen.
INT REJECT:
Rejects interference from other sonars and radars. For further
details see “3.9.2 Interference rejector” on page 3-10.
OTHERS:
See below.
OTHERS sub menu
COLOR:
Select color arrangement to use. The default setting is COLOR 1 and
the setting range 1-4.
COLOR SETTING:
Customizes colors on the vertical display. Operation is same
as that for the horizontal display. For further details see “COLOR SETTING…”
on page 2-36.
COLOR RESPONSE:
Color response defines reflected echo strength versus
color level conversion. You can select one of four color response tables, and the
default setting is COLOR RESPONSE 3 and the setting range is 1-4.
COLOR RESPONSE…:
Adjusts reflected echo strength versus echo color level
for currently selected color response number. Operation is the same as that for
the horizontal display. For further details see “COLOR RESPONSE…” on page
2-37.
GAIN OFFSET:
Adjusts gain level. If the front panel [GAIN] control does not
provide satisfactory gain adjustment, enter an offset here. The default setting is
0 and the setting range is 0-12.
SIGNAL LEVEL:
Dirty water or reflections from plankton may be painted on the
screen in green or light-blue. These echoes may be erased in order of strength.
Select the signal level to erase with the trackball and press the [MENU] key. The
setting range is 0-15 and the default setting is 0.
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