57
Datamax Pro Plus
Once you enter Decompression Mode, you will need to refer to the Gas Time
Remaining bar graph for Breathing Gas Time Remaining information.
The rationale being that Dive Time Remaining is not displayed numerically in
Decompression Mode (No Decompression time is zero and in control).
When Breathing Gas Time Remaining decreases to 5 minutes, the tank Pres-
sure numerals will flash and a Double Beep will sound (Fig. 63). This means
that only 5 minutes remain before your breathing gas supply will be reduced to
the minimum level necessary to perform the required decompression stops and
still provide a tank pressure reserve upon surfacing.
When the Breathing Gas Time Remaining decreases to zero minutes, the Au-
dible Alarm will continuously beep once per second* (Fig. 64), signaling the
need for an immediate safe ascent to your first decompression stop.
*If the audible alarm feature was set to OFF, only a double beep will be
emitted to alert you.
There is no need to panic. The Pro Plus has allowed for (calculated) the
breathing gas you will consume while making a safe controlled ascent, includ-
ing that required for decompression stops, and still provide the surfacing tank
pressure reserve you chose (set) as the End Pressure Alarm Set Point.
Fig. 64 - Breathing Gas Time
Remaining (zero minutes)
Fig. 63 - Breathing Gas Time
Remaining (5 minutes)
20
0 5
10
30 40 50 60
NO DECO
C Z
DECO
C Z
O
2
PSI
FT
20
0 5
10
30 40 50 60
NO DECO
C Z
DECO
C Z
O
2
PSI
FT
