Oceanic ATOM 3.0, Operating Manual

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ATOM 3.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5216-r02 (9/6/11)
VGM (VIOLATION GAUGE MODE)
During NORM 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 continue in VGM during the remainder of that dive and for 24 hours after surfacing.
VGM turns the unit into a digital instrument without any decompression or oxygen related calculations or displays.
Upon activation of VGM, the audible will sound and the alarm LED will flash. The graphics VIO and UP will alternate until on the
surface. The full TLBG will flash until the audible is silenced after 10 seconds, then it will be removed.
VGM Dive Main,
information includes (Fig. 109) -
> Current Depth with FT (or M) icon.
> Graphics VIO and UP, alternating.
> Elapsed Dive Time with EDT and min icons.
> Tank Pressure with Link and PSI (or BAR) icons.
> Air Time Remaining with ATR and min icons.
> VARI while ascending.
> NX, (PZ+), CF, Gas/TMT icons - if they apply.
• A (< 2 sec) - to access ALTs (similar to Deco).
• M (2 sec) - to access Gas/TMT Switching.
• L (press) - to activate Backlight.
VGM on Surface
Upon surfacing, the VGM Dive Main will remain on display for 10 minutes with Surface Interval Time displayed in place of Cur-
rent Depth with the SURF icon flashing. The graphic VIO will also still be displayed flashing.
Operation will also enter VGM 5 minutes after surfacing from a dive in which a Delayed Violation occurred.
After 10 minutes elapse, the graphic VIO alternates with NOR (Fig. 110) until 24 hours elapse with no dives. Watch functions
are as normal.
> A full 24 hour continuous surface interval must then be served before all dive computer functions are restored.
> During that 24 hours, VGM does not allow access to the Set F, Plan, Dsat, and FREE Mode features/screens.
> The Fly countdown indicates time remaining before normal operation can resume with full features and functions.
HIGH PO2 (NORM ONLY)
Warning >> at Alarm Set Point value minus 0.20 (1.00 to 1.40).
Alarm >> at Set Point value, except in Deco then only at 1.60.
When PO2 (partial pressure of oxygen) increases to the Warning level; the audible sounds, during which the Up Arrow icon will
flash (in place of DTR), and the PO2 value will flash (in place of Pressure) until the audible is silenced (Fig. 111).
• S (< 2 sec) - to acknowledge alarm.
> When the audible is silenced, DTR is restored and the PO2 value will alternate with Pressure until PO2 decreases below the
Warning level.
If PO2 continues to increase and reaches the Alarm Set Point; the audible sounds again, during which the Up Arrow icon and
PO2 value will flash (in place of DTR and Pressure).
> When the audible is silenced, the Up Arrow and PO2 value will alternate with NDC and Pressure until PO2 decreases
below the Alarm level.
PO2 Alarm Main, information includes (Fig. 112) -
> Current Depth with FT (or M) icon
> Up Arrow icon, flashing (in place of DTR) until the audible is silenced, then they alternate until < Set Point.
> PO2 value (ATA) with PO2 icon, flashing (in place of Pressure) until the audible is silenced, then they alternate until < Set
Point.
> TLBG with icon
> VARI while ascending
> (PZ+), CF, Gas icons - those that apply
• A (< 2 sec) - to access ALTs (similar to those for No Deco).
• M (2 sec) - to access Gas/TMT Switching.
• L (press) - to activate Backlight.
High PO2 during Deco
(Fig. 113)
The PO2 alarm that was set does not apply when in Deco.
> If PO2 reaches 1.60 while at a Deco Stop, the PO2 value with icon will alternate with Pressure once each minute*.
*PO2 will be displayed for 10 seconds, then Pressure will be displayed for 50 seconds once each minute until PO2 decreases below 1.60, then PO2 will not be
displayed.
Fig. 109 - VGM MAIN
(after Audible)
Fig. 110 - VGM MAIN
(on surface > 10 min)
alt w/
NOR
alt w/
UP
Fig. 111 - PO2 WARNING
(during audible)
Fig. 112 - PO2 ALARM
(during audible)
Fig. 113 - PO2 ALARM
(while in Deco)
alt w/
Pressure