Poseidon SE7EN User Manual
Appendix 3 Page 109
IMPORTANT:
When the mouthpiece is in the “CC” position, the PO
2
control
system maintains the loop PO
2
at whatever the current PO
2
setpoint
is, and decompression calculations are based on the current PO
2
value. When the mouthpiece is in the “oc” position, the PO
2
control
system maintains the loop PO
2
at whatever the PO
2
of the current
diluent is at the current depth, and decompression calculations
are based on the diver breathing the current diluent in open-circuit
mode. When the mouthpiece is in the “NC” or “UC” positions, the
PO
2
control system maintains the loop PO
2
at whatever the current
PO
2
setpoint is, and decompression calculations are based on the
diver breathing the current diluent in open-circuit mode.
Current depth
Figure 3-21.
Current depth.
Maximum depth / Ceiling
Figure 3-22.
Maximum depth.
The maximum depth achieved during the dive is
displayed above the current depth, in the lower-
left part of the Primary Display. Ceiling is shown
in an information box center in the lower part of
the display.
If the maximum depth is flashing, the configu-
rable depth limit alarm is triggered. Can be
change in the SE7EN register list, see the part
“Changing settings in your SE7EN through the
M28”
Figure 3-23.
Display indicating ”ceiling”
to which it is safe to ascend & total
decompression time.
Below the PO
2
value, on the left side of the
screen, is the current depth reading. This value is
shown in either metric or imperial units, depend-
ing on which mode is selected. In metric mode,
the value is show to the nearest tenth (0.1) of a
meter below 100 meter, and from 100 meter to
the nearest meter; when in imperial mode, the
value is shown to the nearest foot. This value will
flash whenever the maximum rated depth is
exceeded.
