Technical information

4.10 Decompression information
No-stop time is displayed if no decompression stops are necessary. The arrow
NO STOP
is visible if no
decompression stops are necessary. The figures indicate no-stop time in minutes.
• No-stop display <99:> means remaining time of 99 minutes or
more.
• No-stop time is calculated on line and influenced by the current
workload and current water temperature.
If no-stop time drops below 3 minutes, an audible
attention signal is activated and the no-stop value
begins to flash. If no-stop time is less than 1 minute,
the no-stop display shows the flashing value "0".
In order to prevent a decompression dive, ascend
slowly until the no-stop time is 5 minutes or more.
Dives that require decompression stops are not
recommended.
18
4 Functions during the dive
UWATEC
®
Smart dive computers
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
NO STOP
%
C
DIVE TIME
DEPTH
DECO INFO
MAX.DEPTH
CNS O
2
%
NO STOP
%
%
C
4 sec
No-stop time
4.9 COM Remaining Bottom Time (RBT)
RBT is the time left at the current depth until the point of time when the ascent must
be started. The RBT is shown in the lower display. The RBT is calculated on the basis
of the current tank pressure, breathing rate, the temperature, and the dive data
so far recorded. The RBT is based on the assumption that the tank pressure
should
amount to the set pressure (default 40 bar/600 psi) at the end of the dive. Alterations
can be made with SmartTRAK. A graphic representation of RBT is on page 11.
Never allow the RBT to go below three minutes. If the RBT goes below three
minutes there is a danger of insufficient supply of gas mixture for the ascent
as well as an increased risk of decompression sickness, and serious injury or
death may result!
Correct calculation of RBT when using a reserve or “J“ type valve is possible
only if the reserve function of the valve is in the open (down) position during
the dive.
If the RBT drops below three minutes, an audible
attention signal is activated, the ascent arrow is
displayed and the tank icon and RBT start flashing.
Start ascent immediately.
The RBT value should never reach <0:>. With RBT=0
the remaining tank reserve may not be sufficient for
the ascent.
When the last minute has passed (RBT=0) an audible
alarm is activated every 4 seconds. The RBT, the
ascent arrow and
the tank icon start flashing. The
audible alarm on exceeding the RBT is suppressed
at depths less than 6.5 m (21 ft) if Smart COM is in
the no-stop phase.
Start ascent at once
TANK DATA
RBT
bar
TANK DATA
RBT
bar
TANK DATA
RBT
bar
4 sec
RBT < 3 minutes
RBT = 0 minutes
WARNING
WARNING
WARNING
WARNING
WARNING