Oceanic OC1 Operating Manual - page 106

106

Fig.96B-VGMMAIN

(afterAudible)

Fig.96A-VGMMAIN

(duringAudible)

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 OC1 

into a digital instrument without any decompression or oxygen 

related calculations or displays. 

Upon activation of VGM, the Audible will sound and the red LED 

will flash.  The full TLBG and Up Arrow icon will flash. 

•  S (< 2 sec) to silence Audible

VGM Main, information includes (Fig. 96A/B) -

>  Current Depth with FT (or M) icon

>  Graphic VIOL (in place of NDC) flashing until on surface

>  ATR (min) when 60 minutes or less with graphic ATR and 

Time (clock) icon

>  Graphic GAS1 (or 2 or 3), one in use

>  Pressure with PSI (or BAR) and Link icons, if Rcvr and TMT 

are active, flashing when Link is lost

>  Nx icon, if any Gas is Nitrox

>  TLBG, flashing during Audible then removed

>  VARI while ascending