Onwa KF-667 - Manual (Page 9)

1. CONTROLS, INDICATIONS
1.1 Control Description
The equipment is so designed that even a first time user can quickly become acquainted with the
operating procedure. Operation of each control or key is acknowledged by an alphanumeric
message or symbol indication on the screen.
Control Function
SHIFT-,SHIFT+ Change display start depth.
(Appears in text as [-],[+].) Select options on menus.
BRILL Adjusts brilliance of display.
AUTO Turns the automatic sounder adjustment feature on/off.
ADVANCE (BRILL+AUTO) Pressing the BRILL and AUTO keys together
selects display advancement speed.
SIG LEV Eliminates low intensity echoes (up to light-blue echoes) in
two steps.
ALARM Open/closes the alarm menu.
A-SCOPE Pressing the SIG LEV and ALARM keys together displays the
(SIG LEV+ALARM) A-scope display at the right 1/4 of the screen.
MARKER ,MARKER
(Appears in text as[ ]or[ ])
Shift the Variable Range Marker (VRM).
Set alarm zone.
Select menu items.
Set white marker.
RANGE Sets the basic range of the display.
GAIN Adjusts receiver sensitivity.
MODE Turns unit on/off
Selects display mode.
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