Cv (Conditional Violation); Dv 1 (Delayed Violation 1) - Aqua Lung NS117121 Owner's Manual

CV (CONDITIONAL VIOLATION)

Upon ascent above the required Decompression Stop depth, operation will enter CV during which no off gassing
credit will be given.
The audible alarm will sound and the alarm LED will flash. Additionally, the full N2 Bar Graph and Down Arrow
icon will flash. Meanwhile, the DOWN message will alternate with gas pressure until the audible alarm is silenced.
Then the N2 Bar Graph will be solid.
> The Down Arrow icon continues to flash until descending below the required Stop Depth (within stop zone), then
the full Stop icon (Stop Bar with both Arrows) will be on solid.
> If you descend deeper than the required Decompression Stop before 5 minutes elapse, Decompression opera-
tion will continue with no off gassing credit given for time above the Stop. Instead, for each minute above the
Stop 1-½ minutes of penalty time will be added to required Stop Time.
> The added penalty (decompression) time will have to be worked off before obtaining off gassing credit.
> Once the penalty time is worked off, and off gassing credit begins, required Decompression Stop Depths and
Time will decrease toward zero. The N2 Bar Graph will recede into the No Decompression zone, and operation
will revert to No Decompression mode.
down arrow
flashing
alternating
with gas
pressure

DV 1 (DELAYED VIOLATION 1)

If you remain shallower than a Decompression Stop Depth for more than 5 minutes, operation will enter DV1*
which is a continuation of CV with penalty time still being added. Again, the audible alarm will sound and the full
N2 Bar Graph will flash until it is silenced. ALT screens are accessed and appear similar to Decompression ALT
screens.
*The difference is that 5 minutes after surfacing from the dive, operation will now enter Violation Gauge Mode.
> Down Arrow icon flashes and DOWN message continues to alternate with gas pressure until descent below the
required Stop Depth, then the full Stop icon will be on solid.
> If the DV1 status is ignored, the i550C will enter DV1 Surface mode for 5 minutes upon surfacing from the dive.
VIOL (Violation) and Down Arrow icon will be flashing. After 5 minutes on the surface in DV1 mode, the unit will
enter VGM (Violation Gauge Mode).
DV1 DIVE MAIN
missed stop
depth
alternating
time required
with gas
at missed stop
pressure
© Aqua Lung International, Inc. (2018)
N2 Bar Graph
flashing
VIOL (Violation),
flashing
Stop Depth/Time
alternates with
Surface Time
39
DIVE OPERATION
DV1 < 5 MIN ON SURFACE
Doc. 12-7909-r04 (10/31/18)