Tag Archives: rebreather

What is DiveCAN® and why should I care?

Digital communications are clearly replacing analog communications in computer based devices.  As more digital communication becomes integrated into rebreathers, Shearwater went in search of the best digital solution. We looked at basic serial and at higher level serial like HDLC and SDLC as well as microprocessor communication protocols...

Why do you calibrate a CCR with pure Oxygen?

We frequently get asked the question as to why we use O2 as a calibration source for oxygen sensors in closed circuit rebreathers (CCR).  A CCR diver often has multiple gasses available, any of which could in theory be used for calibrating the O2 sensors in the...