Delayed Violation 2 (Dv 2); Delayed Violation 3 (Dv 3); Violation Gauge Mode During A Dive - Aqua Lung i450T Owner's Manual

DELAYED VIOLATION 2 (DV 2)

If the calculated Decompression obligation requires a Stop Depth between 60 ft (18 m) and 70 ft (21 m), operation
will enter DV2.
The audible alarm will sound and the alarm LED will flash. The full N2 Bar Graph will flash until the audible is
silenced.
• Up arrows flash if 10 ft (3 m) deeper than the required Stop Depth.
• Once within 10 ft (3 m) of and below the required Stop Depth, the DECO STOP message and full stop graphic
(opposing arrows with stop bar) will be displayed solid.
Deco Stop
depth
60 -70 ft
(18 - 21 m)

DELAYED VIOLATION 3 (DV 3)

If you descend deeper than the maximum functional depth*, the audible alarm will sound and the alarm LED will
flash. Also, the up arrows, and TOO DEEP UP message will flash. Additionally, Current Depth will only indicate
dashes signifying that you are too deep.
* The maximum functional depth (Dive/Free = 330 ft / 100 m, Gauge 400 ft/120 m) is the depth at which the i450T can properly perform calcu-
lations or provide accurate display information.
Upon ascending above the maximum functional depth, current depth will be restored. However, the log for that
dive will display dashes for max depth.
flashing
VIOLATION GAUGE MODE (VGM) DURING A DIVE
During Dive mode dives, operation will enter VGM when Deco requires a Stop Depth greater than 70 ft (21 m). It
will also enter VGM if Deco is activated during a dive in Free mode, described later. Operation would then con-
tinue in VGM during the remainder of that dive and for 24 hours after surfacing. VGM turns the i450T into a digital
instrument without any decompression or oxygen related calculations or displays. Upon activation of VGM, the
audible alarm will sound and the alarm LED will flash. The message VIOLATION UP with up arrows will flash.
After the audible alarm becomes silent (10 seconds), the NO DEC (No Decompression) and N2 Bar Graph will not
display for the rest of the dive. GTR (Gas Time Remaining) will be moved to an ALT screen.
VGM DURING AUDIBLE
flashing
© Aqua Lung International, Inc. (2015)
VGM AFTER AUDIBLE
N2 Bar Graph
removed
48
DIVE OPERATION
Doc. 12-7834-r04 (2/16/16)