Shearwater Perdix - ALERT DISPLAYS; Missed Stop

Operations Manual Perdix
Manual DocRev B
91
ALERT DISPLAYS
The system has several displays that alert to warnings, errors, and information alerts.
Each of the alerts will display the message in yellow until dismissed. The error is
dismissed by pressing the SELECT (right) button.
The highest priority error is listed first. If multiple errors occur simultaneously, the error
with the highest priority will be displayed. Clear that error by pressing the SELECT
(right) button to see the next error.
Error Description Solution
Low PPO2
The PPO2 is below the limit set on the
Adv. Config. page (default 0.19)
Change your breathing gas to one
safe for the current depth.
High PPO2
The PPO2 is above the limit set on the
Adv. Config. page (default 1.65)
Change your breathing gas to one
safe for the current depth.
Missed Stop
A required decompression stop was
violated.
Descend to deeper than the currently
displayed stop depth. Monitor
for symptoms of DCS. Use extra
conservatism for future repetitive
dives.
Fast ascent
The ascent was sustained at faster than
10m/min (33 feet/min).
Use a slow ascent rate. Monitor
for symptoms of DCS. Use extra
conservatism for future repetitive
dives.
Tissues Cleared
The decompression tissue inert gas
loading has been set to default levels.
Plan repetitive dives accordingly.
Low Battery Int. The internal battery is low. Replace the battery.
High CNS
Central Nervous System (CNS) toxicity
clock high exceeded 90%.
Switch to a gas with a lower PPO2
or ascend shallower (decompression
ceiling allowing).
Watchdog Reset
The computer has reset to recover from
an unexpected software condition.
Please report to Shearwater Research
Inc.