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BRILL
SIG LEV
ALARM
AUTO
Change display start depth.
Select options on menus.
Turns the automatic sounder
adjustment feature on/off.
Adjusts brilliance of display.
Pressing the SIG LEV +
ALARM keys together.
Displays the A-scope display
at the right 1/4 of the screen.
Pressing the BRILL + AUTO
keys together. Selects display
advancement speed.
Open/closes the alarm menu.
Eliminates low intensity echoes
(up to light-blue echoes)
in two steps.
Shift the Variable Range Marker (VRM).
Set alarm zone.
Select menu items.
Set white marker.
Sets the basic range
of the display.
Adjusts receiver sensitivity.
Turns unit on/off
Selects display mode
1-2