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3.1 BEFORE DIVING
3.1.1. ACTIVATION AND PRE-CHECKS
The instrument can be activated by pressing
the M button or it will automatically activate
the gauge diving or freediving computer mode ac-
cording to the user selection, if submerged deeper
than 0.6 m (2 ft).
The chosen Dive Mode is indicated by the GAUGE
(Fig 3.1.) or FREE (Fig 3.2.) texts and mode indicator
on the right side of the display. If set to Gauge mode all
display elements will turn on show ing mostly fi gure
8’s and graphical elements (Fig. 3.3.). After a few sec-
onds the battery power indicator is shown and the back-
light and the buzzer are activated (Fig. 3.4.a). Next,
the screen will display the mode dependent Ready
display confi rming that the activation is complete
(Fig. 3.5). If set to Free mode, the D3 will go directly
to the ready display without the display and battery
checks (Fig 3.6).
F
R
E
E
A
C
S
a)
b)
c)
d)
F
R
E
E
A
C
S
F
R
E
E
A
C
S
F
R
E
E
A
C
S
Fig. 3.4. Startup II. Battery Power Indicator.