6
OPERATION
Controls and Indications on the Main Display Unit
DOPPLER SONAR
DS-50
MODE
Keel Clearance
m/s
fa
DIMMER
NM
kn
ft
D
istance
AL
G
W
A
S
▲
▲
▲
▲
SET and arrow keys
Set distance run.
POWER
switch
Push here to
open lid.
DIMMER controls
Adjust brilliance.
(Default: 8)
Unit of keel clearance
or distance run:
ft (feet), fa (fathoms), or
NM (nautical miles)
Speed alarm*
Unit of speed (knot or
meters/second)
Test mode indicator
Fore and aft
direction indicators
Port and starboard
direction indicators
Port or starboard speed
Fore or aft
speed
Tracking mode
indicator
Ground
Water
Automatic
MODE selector
Selects tracking
mode.
Distance/Keel
Clearance selector
Displays distance run
or keel clearance.
kn/m/s selector
Selects unit of
speed measurement.
ONURUFONURUF
*: If a speed error occurs, the "AL" lights in red.
When the normal speed is restored, this indication disappears.
Note: Performance may be affected by air bubbles, interference and other factors.