Algorithm Selection ("Algo"); Diving With The M2 ("Scuba") - Uwatec M2 User Manual

4.7 Algorithm selection
("ALGO")
You may select your M2 operation mode
between SCUBA, GAUGE or APNEA modes.
When the M2 has not been submerged for a
while the display looks as below:
F
NOTE: Because GAUGE and APNEA
modes do not track tissue saturation,
there is a "locking" interval before a
change to SCUBA mode is possible.
In GAUGE mode this locking interval is
48h after the last dive in GAUGE mode.
In APNEA mode there is a 12h locking
interval when the last dive in APNEA
mode was shallower than 5m/16ft, and a
24h locking interval when the last dive in
APNEA mode was deeper than 5m/16ft.
The M2 shown below went for a dive in
GAUGE mode so the operation mode
cannot be changed for another 13 hours.
The change to GAUGE or to APNEA mode
is possible after the desaturation time from
the last SCUBA dive has elapsed.
If you decide to change modes before the
48h interval or full desaturation, you have
M2 USER MANUAL
to go to the desaturation reset menu and
perform a manual desaturation reset.
By pressing the SEL button in this menu
the mode starts blinking. By pressing the
+/UP or -/DOWN buttons you may select
between SCUBA, GAUGE or APNEA
modes. By pressing the SEL button the
selection will be confirmed.
4.8 Diving with the M2
("SCUBA")
The functions of the buttons during diving
are summarized in the table below.
Note that the M2 can be set to three Dive
modes: SCUBA, APNEA and GAUGE. Due
to the operational differences between
modes, the buttons will have different
functions depending on which mode you
are using.
"LIGHT" Press = backlight
Press and hold = bookmark
"SEL/ESC" Press = accept gas switch/
activate the compass
Press and hold = start manual
gas switch
Press and hold in APNEA and
SWIM mode = end the dive /
"+/UP" Press = alternative display
Press and hold in SWIM mode
active = manual start/stop of
the SWIM mode
Press and hold in GAUGE
mode = reset average depth
"-/DOWN" Press in SCUBA and GAUGE
mode = start/stop timer
Press and hold in SCUBA and
GAUGE mode = reset the
timer if it is stopped
Press and hold in APNEA
mode = manual start and end
exercise
data
counter
the dive
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