SUUNTO HELO2 - Manual (Page 72)

NOTE
Mix number, O
2
%, He and PO
2
for the mixes are shown when
scrolling. If the set PO
2
limit is exceeded , it will be shown with
the PO
2
value blinking. The dive computer does not allow you to
change to a gas whose set PO
2
is exceeded. In such a case, the
mix is shown but cannot be selected. If the PO
2
is less than 0.18
bar, the dive computer gives an alarm.
NOTE
If no button is pressed in 15 seconds, the dive computer will go
back to the dive display without changing the gas mix. Upon as-
cent, the computer prompts you to change gas when the PO
2
level you have set for the next mix allows a gas change. The
prompt is an audible 3 beeps and the current O
2
or O
2
: He mix
starts to blink.
6.3. Diving in the GAUGE mode
If set to the GAUGE mode, the dive computer can be used as a bottom timer.
In the GAUGE mode, the total dive time is always displayed in minutes in the lower
right corner. In addition, a Dive Timer in the center window displays time in minutes
and seconds. The center window Dive Timer is activated at the start of the dive and
it can be reset during the dive and used as a stopwatch by pressing the SELECT
button.
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