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RANGE
You can’t adjust the range when the auto-
matic mode is on. It is adjustable when the
unit is in the manual mode, however. To do
so, first put the unit in the manual mode. Now
press a menu key until the “RANGE SEL”
menu appears as shown at right. The current
range shows at the bottom of the menu. In this
case, the range is 60 feet. Now press the up
arrow key to decrease the range, the down
arrow key increases the range. After you
select the desired range, press the PWR/
CLEAR key to clear the display. If you wait a
few seconds, it automatically clears.
The Fish ID 128 has the following ranges:
10, 20, 40, 60, 120, 240, 480, and 900 feet.
and
5, 10, 20, 40, 60, 100, 200, and 300 meters.
ZOOM
The zoom feature enlarges all echoes on the screen. If the unit is in the
automatic mode, it tracks the bottom signal, always keeping it near the
bottom of the screen. This lets you see small detail, at the same time
enlarging all echoes that appear on the screen.
Remember, however, that the unit doesn’t
track the bottom while in the manual mode.
To zoom the display, first press a menu key
until the RANGE/ZOOM menu appears. Now
press the down arrow key as shown at right.
This switches the unit into the zoom mode. All
echoes are shown at twice their normal size.
To turn the zoom off, select the RANGE/
ZOOM menu, then press the up arrow key.
NOTE: The depth capability of this sonar depends on the transducer
installation, water and bottom conditions, and other factors.