Modular design compartmentalizes critical functions for redundancy. The Solenoid and Oxygen
electronics (on the SOLO board) can measure and inject oxygen independently of the Primary
Controller handset even in case that the handset or its cable is unplugged or damaged, while the
SOLO board continues to control loop PPO2 until the diver is surfacing.
The control electronics uses the DiveCAN®, a digital communication standard developed by
Shearwater Research Inc. specifically for rebreathers for robust error-checked communications,
when a message is either received correctly or it isn’t received at all. The DiveCAN® is easily
upgradable and expandable.
PPO2 reading output from all three oxygen sensors are electronically separated one from another
as well as the PPO2 reading outputs to the Primary Controller Bus and the Secondary Monitoring
Bus are electronically separated one from another.
The Secondary Monitoring Bus is independent on the Primary Controller Bus and provides backup
PPO2 monitoring in the event of a failure on the Primary Controller.
A fault or short circuit on any sensor or one connected device, it does not affect the remaining
ppO2 readings on the working device.
The Primary Controller handset, the Head-Up Display or NERD2 are connected via the watertight
connectors rated up to 300m depth. The connectors allow flexible connection of the controller
and monitoring devices as well as easy disconnection of the devices for travel, upgrades and repair.