Dacor DARWIN, Руководство пользователя

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warnings remain active until normal conditions are
restored.
If the decompression stop overshoot exceeds 1
meter (3.28 ft) and lasts more than 3 minutes, the
computer switches to Omitted Stop mode.
In this case, the corresponding icon appears (fig. 16).
FIG. 16
If, after surfacing, the diver attempts a repetitive
dive, the DARWIN will function only as a depth gauge
(Stop Mode).
D
IVE
-
ASCENDING
A reduction in depth activates an ascent rate
monitoring algorithm. The dive computer shows a
graphic indication of the diver's ascent rate as a
percentage of the optimal value, given in the table
below:
Depth Optimal ascent rate
Less than 10 m (32.8 ft) 10 m/min (32.8 ft/min)
Between 10 m and 20 m
(32.8 and 65.6 ft)
12 m/min (39.4 ft/min)
More than 20 m (65.6 ft) 18 m/min (59 ft/min)
If the diver's speed of ascent reaches 60% of the
maximum permitted ascent rate for the current depth,
the corresponding graphic indicator will appear.
The correspondence between the bars and the
percentage of the optimal ascent rate is as
follows:
1 bar (14.5 psi)
60 < % speed < 80
2 bars (29 psi) 80 < % speed < 95
3 bars (43.5 psi) 95 < % speed < 105
4 bars (58 psi) 105 < % speed < 120
4 bars (58 psi) + "Slow" % speed > 120
If the "Slow" message appears, an audible alarm is
sounded which persists until the diver's speed of
ascent drops below 120%.
If the diver's ascent rate is sufficiently fast to
trigger the audible alarm, the computer begins
monitoring an uncontrolled ascent.
An ascent is considered to be "uncontrolled" when
the maximum ascent rate is exceeded (SLOW with
audible alarm) for a stretch equal to at least 2/3 of
the depth at which the audible alarm started
sounding. This criterion only applies to alarms
triggered below a depth of 12 meters (39.4 feet).
In the event of an uncontrolled ascent (fig. 17), if
the user attempts a repetitive dive after surfacing,
the DARWIN will function only as a depth gauge
(Stop Mode).
The "STOP after uncontrolled ascent" function can
be disabled in SET3.
FIG. 17
D
IVE
- S
AFETY
S
TOP
If the maximum depth of a dive exceeds 10
meters (32.8 feet) a "Safety Stop" is activated for
the ascent; the DARWIN will then suggest a 3
minute safety stop at a depth between -2.5 and -
5 meters (-8.2 and -16.4 feet), replacing the no-
dec time of 99 min with the message "St 3
min…2min…1min" (fig. 18). If the diver moves
outside the above mentioned depth range, the no-
dec time reappears on the display, and the safety
stop timer is stopped. When the diver re-enters
!
WARNING
The above option is intended only for
highly experienced divers, who take full
responsibility for the consequences of
disabling the function which locks out
the computer in case of an uncontrolled
ascent.
!
DANGER
An excessive speed of ascent increases
the risk of decompression sickness.
!
WARNING
When the omitted deco stop alarms are
triggered, desaturation of the simulated
tissues is halted; it resumes when the
diver returns to the correct
decompression stop depth.
DARWIN DIVE COMPUTER
13
ENGLISH
Darwin.qxd 29/03/2002 16.45 Pagina 13