High.po2 - Aeris A300 CS Operating Manual

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 A300 CS into a digital instrument without any decompression or oxygen related calculations or displays.
Upon activation of VGM, the Audible will sound for 10 seconds during which full TLBG* will flash, then be removed.
VGM MAIN, information includes (Fig. 54) -
> BATT icon - green (if battery voltage is good), or yellow (if at warning level), or red (if at alarm level).
> Current Depth with FT (or M) icon.
> Graphics GO UP VIOLATION with 2 Up Arrows (red), flashing until on surface.
> Graphic GAS 1 (or 2, 3, 4), one in use.
> Pressure with PSI (or BAR) icon.
> ATR (min) with icon.
> Full TLBG, flashing during Audible, then removed.
> VARI while ascending.
• A (2 sec) - to access Adjust Brightness.
• A (< 2 sec) - to access ALT.
• M (2 sec) - to access the Gas/TMT Switch Menu*.
• S (< 2 sec) - to restore screen Brightness from the Auto Dim level to the % level you last adjusted it to.
• S (< 2 sec) - to acknowledge alarms; this will also restore screen Brightness if it was dimmed by Auto Dim.
• S (2 sec) - to access Compass*.
VGM ALT information is similar to the Deco ALT.
VGM ON SURfACE
The graphic VIOL flashes for the first 10 minutes, then VIOL (Fig. 55) alternates with NORM (each On 3 seconds) until unit shut
down after 24 hours with no dives*.
During that 24 hours, access to all menus and screens is available except those associated with Ni-O2 calculations such as Plan,
Set FO2. The Fly countdown timer provides the time remaining (of the 24 hours required) before normal operation can resume
with full features and functions.
Operation also enters VGM 5 minutes after surfacing from a dive in which a Delayed Violation occurred or O2 reached 100%.
HIGH PO2
Warning >> at 0.20 less than the alarm value set for the Gas in use.
Alarm >> at the value set for the Gas in use, except in Deco then at 1.60 only.
When partial pressure of oxygen (PO2) increases to the Warning level; the Audible will sound during which the graphics PO2 =
1.xx (yellow) will flash in place of DTR (Fig. 56A).
After the Audible is silenced, DTR is restored.
If PO2 continues to increase and reaches the PO2 Alarm level set for the gas in use, the Audible will sound again during which
the graphics GO UP PO2 = 1.xx with Up Arrows (red) will flash in place of DTR* (Fig. 56B) until PO2 decreases below the set
point at which time DTR will be restored.
• A (2 sec) - to access Adjust Brightness.
• A (< 2 sec) - to access ALTs.
• M (2 sec) - to access the Gas/TMT Switch Menu*.
• S (< 2 sec) - to restore screen Brightness from the Auto Dim level to the % level you last adjusted it to.
• S (< 2 sec) - to acknowledge alarms; this will also restore screen Brightness if it was dimmed by Auto Dim.
• S (2 sec) - to access Compass*.
PO2 during Deco
The PO2 alarms that were set do not apply when in Deco.
If PO2 reaches 1.60, the Audible will sound during which the graphics PO2 = 1.60 (red) will flash in place of Stop Depth/Time
(Fig. 56C).
After the Audible is silenced, the PO2 graphics will alternate with Stop Depth/Time once each minute*.
*PO2 graphics will be displayed for 10 seconds, then Stop Depth/Time will be displayed for 50 seconds once each minute
until PO2 decreases below 1.60, then PO2 will not be displayed.
© 2002 Design, 2014
*A full 24 hour surface interval must then be served before all functions are restored.
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*These items can only be accessed while viewing the Main.
*DTR moves to the ALT screen.
*These items can only be accessed while viewing the Main.
30
A300 CS OPERATING MANUAL
136
BATT
FT
G O U P
V I O L AT I O N
GAS 2 ATR
1270 14
PSI
Fig. 54 - VGM MAIN
(after Audible)
alternate with
NORM
BATT
0:14
SURF
VIOL
GAS 1 DIVE
450
PSI
Fig. 55 - VGM ON SURFACE
75
BATT
FT
PO2 = 1.20
GAS 2 ATR
2410 53
TL
PSI
Fig. 56A - PO2 WARNING
(No Deco Dive Main)
77
BATT
FT
GO UP
PO2 = 1.40
GAS 2 ATR
48
2130
TL
PSI
Fig. 56B - PO2 ALARM
(No Deco Dive Main)
21
BATT
F F T
PO2 = 1.60
GAS 1 ATR
460
27
TL
PSI
Fig. 56C - PO2 ALARM
(Deco Stop Main)
Doc. No. 12-7287-r03 (7/14/14)
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