8
Turning on the Power, Adjusting Panel Dimmer
1. Press the [POWER] switch to turn on the power. The equipment is tested in the sequence below:
1) Communications test between main display unit and the processor unit is conducted. Three
zeroes blink about 30 s.
DOPPLER SONAR
DS-50
MODE
Distance
Keel
Clearance
Keel Clearance
m/s
fa
DIMMER
NM
kn
ft
D
istance
AL
G
W
A
S
Zeroes blink for
about 30 seconds.
ONURUFONURUF
Power switch behind
the cover
2) Testing of main display and processor unit begins. Memory, LEDs and buzzer are tested in
order, each tested eight times consecutively. Then the program version number of both the main
display unit and the processor unit appear.
Keel Clearance
m/s
fa
NM
kn
ft
Distance
AL
G
W
A
S
Program Version NO.
of main display unit
Program Version NO.
of processor unit
The equipment is normal if the program version nos. appear. If an error is found an error message
appears instead of a program version number. Error messages are described on page 16.
3) The normal display appears, showing speed and distance run (or depth below keel).
2. Adjust panel dimmer with the [DIMMER] controls. Press the ▲ or ▼ to increase or decrease
the dimmer, respectively. Eight levels of dimmer are available. Selected dimmer appears below
the distance run and depth display for 0.5 seconds.
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