Page 12
Doc. 13301-Tec-RevB (2022-05-25)
Technical Modes
Operating Instructions
Dive Time
The first “TIME” item, on the left
of the top row, is the length of the
current dive in minutes�
Seconds display as a bar drawn
below the word “Time�” It takes 15
seconds to underline each character
in the word� The seconds bar is not
displayed when not diving�
Decompression Stop Depth and Time
22
TIME
22
TIME
BLUE
when battery charge is OK
YELLOW
when battery needs to
be replaced�
RED
when battery must be
replaced immediately�
Stop at 27 meters for 2 minutes
TIME
25.2 62
27 2
DEPTH TIME STOP
Surface Interval
When on the surface, decompression stop depth
and time are replaced by a surface interval display
showing the hours and minutes since the end of your
last dive�
SURFACE
OC 21/00 0 0
O2/HE
.21
GasPO2
.0
DEPTH TIME
h
m
15
2
CLEAR
TTS
OC 21/00 0 0
O2/HE
NDL
.21
GasPO2
.0
DEPTH TIME
2:14
TIME
27.2 62
27 2
DEPTH TIME STOP
The third item in the Top row, “Stop”, indicates the
next decompression stop depth in the current units
(feet or meters)� This is the shallowest depth to which
you can ascend� The last item on the right in the top
row, “time”, is how long in minutes to hold the stop�
Decompression Stop Violated
Decompression information will
Flash Red
if you
ascend shallower than the current stop�
By default the Perdix 2 uses a 3m (10ft) last deco stop
depth� You may perform your last deco stop deeper
if you wish - deco calculations will remain accurate� If
you choose to do this, depending on your breathing
gas, the predicted time-to-surface may be shorter
than the actual TTS since off-gassing may occur
slower than the algorithm expects� There is also an
option to set the last stop to 6m (20ft)�
2 hour and 15 minute surface interval
Above 4 days, the surface interval is displayed in days�
The surface interval is reset when the decompression
tissues are cleared� See the Decompression Tissue
Loading section on page 78 for more information�
Deco Clear Counter
When deco clears the STOP DEPTH and TIME are
replaced by a counter that begins counting up from 0�
Battery Icon
The default behavior is that the battery icon is shown
on the surface but disappears when diving� If low or
critical then the battery icon will appear while diving�