Page 10
Doc. 13301-Tec-RevB (2022-05-25)
Technical Modes
Operating Instructions
4. Dive Interface
4.1. Default Dive Setup
The Perdix 2 comes pre-configured for recreational
diving� The default dive mode is 3 Gas Nitrox mode (3
GasNx)�
As a quick reference, a diagram of the default diving
display is shown below�
This manual is for technical dive modes only� Many
features of the above default display are shared by
the dive modes covered in this manual�
For directions on how to use Air, Nitrox or 3 GasNx
modes, see the
Perdix 2 Recreational Modes Manual.
The next section lists all the dive modes available on
the Perdix 2� Change the Dive Mode from the Mode
Setup menu� See details on page 63
Default Dive Display -
3 GasNx mode
4.2. Dive Mode Differentiation
Each dive mode is designed to best suit a particular
type of diving�
Air
Designed for use during recreational, air only,
no-decompression diving activities�
• Air (21% oxygen) only, not switchable underwater
Nitrox (Single Gas)
Designed for use during recreational, Nitrox,
no-decompression diving activities�
• Single Gas Nitrox up to 40% oxygen
• No gas switching underwater
3 GasNx (Three Gas Mode)
Designed for introductory technical diving activities
including diving involving planned decompression�
• Three programmable gases
• Support for gas switching
• Nitrox up to 100%
OC Tec
Designed for open circuit technical diving activities
including planned decompression�
• Full Trimix
• No Safety stops
CC/BO
Designed for use with a closed circuit rebreather�
• Fast switching from closed circuit to open circuit
(BO) operating modes�
Gauge
Gauge Mode turns the Perdix 2 into a simple depth
and time display with a dedicated layout (bottom
timer)� See details on page 37�
• No tissue tracking
• No decompression information
Ascent Rate
No-Deco
Limit
Dive Time
Active Gas
3
:
00
Air 21
m
.
o
23
°C
10
:
55
am
MAX
.
7
:
:
Depth
Safety Stop
Nitrogen
Loading
Temperature
Time