Operating Instructions
Page 54
Doc. 15301-RevB (2023-11-24)
Safety Stops
The Safety Stop setting can
be set to the following values:
• Off
• 3 minutes
• 4 minutes
• 5 minutes
• Adapt
• Count Up
When using the Adapt setting, a 3 minute safety stop
will be used, unless the dive exceeds 30m (100ft)
or the NDL falls below 5 minutes, in which case a 5
minute safety stop is used�
Read more about Safety Stops on page 24�
11.3. Gas / Gases
Nitrox Mode
In Nitrox mode, the currently active gas is
conveniently displayed in the settings menu�
This setting si the same as the Edit Gas item
found in the main menu� The Nitrox mode can be
programmed with any oxygen fraction between 21%
and 40%�
3 GasNX
The Tern supports 3
programmable gases in
3GasNX dive mode�
This setting is the same as
the Edit Gases item found
in the main menu, but is
conveniently located along
with the other dive settings�
See the Edit Gases section
on page 44 for more
information�
Deco
Last Stop
Safety Stop
Adapt
3 m
Back
Settings
Deco|40/85
Gases
Display|m/�C
OFF
Edit Gases
50%
99%
21%
ACT
ON
Back
00
0m
0:
Settings
Deco|40/85
Gases
21%
Display|m/�C
Gas
✘
21%
Back
OC
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