63
If the theoretical amount of oxygen accumulated equals, or
exceeds, the limit for a single exposure, or the exposure limit for
a 24 hour period, Oxygen Dive Time Remaining becomes zero
(0:00) and the O2 Bar Graph will enter the red
O2 (Danger)
Zone
(Fig. 77). The red LED warning will flash, the Audible
Alarm will sound (unless set OFF), and the UP Arrow and the full
O2 Bar Graph will flash as a warning until the level of oxygen
decreases below the limit.
• Press the Front (Advance) button to view the Alternate
Displays.
• The unit will revert to the Main Default Display after 3
seconds.
• Press the Side (Select) button to activate the Backlight.
USER SET DIGITAL GAUGE MODE
When Digital Gauge Mode is set for ON, the VT Pro will operate
as a Digital Depth Gauge/Timer without performing nitrogen and
oxygen calculations (Fig. 78).
Time of Day and Elapsed Dive Time will also be displayed.
• Press the Front (Advance) button to view Air Time Remaining
for 3 seconds in place of Elapsed Dive Time (Fig. 79a).
O
2
FEET
ATR
5
10
0
O
2
PSI
O
2
FEET
ATR
PSI
O
2
M
A
X
Fig. 77 - High O2
Fig. 78 - User Gauge Mode
Fig. 79 - User Gauge Mode
(Air Time Remaining)
FEET
ATR
5
10
0
PSI
O
2
M
A
X
a
