water depth (from the transducer face) so you can see a view from the
surface to the sea bottom.
Sometimes you may choose to begin looking into
the water column at some deeper depth point so
SHIFT
RANGES
you
can keep the size of the
fish
echoes consistant
1
over the screen area. The starting depth point of
the range scales can be shifted anywhere between
0 to 3000 Feet, 1495 Meters, or 995 Fathoms in
5
G
unit steps or increments.
The Shift operation for the fishfmding displays can be controlled manually
or automatically while on the fishfinding display modes. To select a
specific
Shift depth, press the
m
key. A temporary
menu
‘SHIFT
XXX”
appears. Press the
v
(down) key
to select a deeper Shift setting point. The Shift
starting value in the menu boxchangeseach time the
1
_
up/down key is pressed to show the new setting and
resets to the new depth range value starting at the
selected Shift point. In approximately 7 seconds,
the menu disappears from the screen.
33.1.6.1
Ant0
Shift Operation
Auto Shift permits the echo sounder to automatically maintain the same
range scale expansion whenever the bottom echo goes deeper than the
range scale in use, or when the range becomes shallower than
10% of the range scale in use by also changing the starting
point of each scale. The main purpose for using AUTO
Sm
is to keep the fish echoes on the screen at the same sizes for
easier identification.
‘Ib
select Auto Shift, just press
thei=
key.
A second temporary menu
~AUTO”
appears directly below the
SHIFI’
menu. To activate AUTO
SRLFL
operation
,
press the
softkey
indicated by the AUTO menu.
“AUTO
S”
now
appears on the display in the upper right side of the display area whenever
Auto Shift is ON.
Auto Shift will be turned OFF whenever the
SHIFT
setting is reset to a new
value manually.
OPERATION 51
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