Operation Manual

32
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
DELAYED VIOLATION 2 (DV2)
If the Deco obligation requires a Stop Depth between 60 FT (18 M) and 70 FT (21 M), operation will enter DV2 (Fig. 84).
The Audible will sound and the LED will flash. The full TLBG will flash until the Audible is silenced.
> Up Arrow icon flashes if 10 FT (3 M) deeper than the required Stop Depth.
> Once within 10 FT (3 M) of and below the required Stop Depth (Stop Zone), the full Stop icon (both Arrows with Stop Bar)
will be displayed solid.
• L (press) - to activate the Backlight.
DELAYED VIOLATION 3 (DV3)
Upon descent deeper than the MOD** (330 FT/100 M), the Audible will sound and the LED will flash. Also, the Up Arrow will
flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ) signifying that you are Out of Range.
**MOD is the Max Operating Depth at which the OCS can accurately perform (NORM/FREE) nitrogen calculations.
Upon ascending above 330 FT (100 M), Current Depth will be restored, however, Max Depth (on ALT 1) will display 3 dashes
for the remainder of that dive. Also, the Log for that dive will display 3 dashes as the Max Depth.
DV3 MAIN, information includes (Fig. 85) -
> Up Arrow icon, flashing.
> Current Depth, 3 dashes ( - - - ) flashing, with FT (or M) icon.
> DTR as 3 dashes ( - : - - ) with graphic NDC.
> Graphics TOO DEEP and GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> TLBG with NI icon.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
DV3 Alt 1, information includes (Fig. 86) -
> Max Depth as 3 dashes ( - - - ) with FT (or M) and MAX icons.
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
DV3 Alt 2, information includes (Fig.87) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
VIOLATION GAUGE MODE (VGM)
If a Deco Stop Depth greater than 70 FT (21 M) is required, operation will enter VGM. This would be preceded by DV2.
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing. VGM turns the OCS
into a digital instrument without any decompression or oxygen related calculations or displays. Gas Switching is terminated.
Upon activation of VGM, the Audible will sound and the LED will flash. The full TLBG and Up Arrow icon will flash.
VGM Main, information includes (Fig. 88/89) -
> Up Arrow icon, flashing until on surface.
> Current Depth with FT (or M) icon.
> Graphic VIOL (in place of NDC) flashing until on surface.
> TLBG, flashing during Audible then removed.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Fig. 85 - DV3 MAIN
Fig. 86 - DV3 ALT 1
Fig. 87 - DV3 ALT 2
Fig. 89 - VGM MAIN
(after Audible)
Fig. 88 - VGM MAIN
(during Audible)
Fig. 84 - DV2 MAIN