Asc Bar Graph; N2 Bar Graph; Algorithm; Cf (Conservative Factor) - Aqua Lung i300C Owner's Manual

ASC BAR GRAPH

The ASC Bar Graph provides a visual representation of ascent speed (i.e., an ascent speedometer). When the
ascent is faster than the recommended 9 mpm (30 fpm), all segments and the message SLO (slow) flash until the
ascent is slowed.
# OF SEGMENTS
0 0 - 3 (0 - 10)
1 3.1 - 4.5 (11 - 15)
2 4.6 - 6 (16 - 20)
3 6.1 - 7.5 (21 - 25)
4 7.6 - 9 (26 - 30)
5 > 9 (> 30)

N2 BAR GRAPH

The N2 Bar Graph represents your relative No Decompression or Decompression status. The first four seg-
ments represent No Decompression status and the fifth indicates a Decompression condition. As your Depth and
Elapsed Dive Time increase, segments are added. As you ascend, segments recede indicating that additional No
Decompression time is available. The i300C monitors multiple theoretical nitrogen compartments simultaneously
and the N2 Bar Graph displays the one that is in control of your dive at any given time.

ALGORITHM

The i300C utilizes the Z+ algorithm to calculate nitrogen tissue loading. To create even greater margins of safety
with respect to decompression, a Conservative Factor as well as No Decompression Deep and Safety Stops can
be included for No Decompression dives.

CF (CONSERVATIVE FACTOR)

When the CF is set to On, the dive time remaining, No Deco/O2 MIN, which are based on the algorithm and used
for N2/O2 calculations and displays relating to Plan Mode, will be reduced to the values available at the altitude
level that is 915 m (3,000 ft) higher than the actual altitude at activation. Refer to the charts in the back of this
manual for dive times.

DEEP STOP

When the Deep Stop selection is set to ON, it will trigger after descending deeper than 24 m (80 ft). The i300C
then calculates (continually updating) a Stop Depth equal to ½ the Max Depth.
NOTE: The Deep Stop feature only works in DIVE Mode while within No Decompression times.
> While 3 m (10 ft) deeper than the calculated Deep Stop, you will be able to access a Deep Stop Preview screen
that will display the current calculated Deep Stop Depth/Time.
> Upon initial ascent to within 3m (10 ft) below the calculated Stop Depth, a Deep Stop screen displaying a Stop
Depth at ½ the Max Depth will appear with a countdown timer beginning at 2:00 (min:sec) and counting down
to 0:00. If you descend 3m (10 ft) below, or ascend 3m (10 ft) above, the calculated Stop Depth for 10 seconds
during the countdown, the No Decompression Main will replace the Deep Stop Main display and the Deep Stop
feature will be disabled for the remainder of that dive. There is no Penalty if the Deep Stop is ignored.
> In the event that you enter Decompression, exceed 57 m (190 ft), or a High O2 SAT (Oxygen Saturation) condi-
tion, ≥ 80%, occurs, the Deep Stop will be disabled for the remainder of that dive.
> The Deep Stop is disabled during a High PO
© Aqua Lung International, Inc. (2017)
ASCENT RATE,
MPM (FPM)
Alarm condition, ≥ set point.
2
ASC ALARM TRIGGERED
flashing
13
DIVE FEATURES
Doc. 12-7874-r06 (11/27/17)