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You wrote: > >Hi Mike, >The issue was and is the production of safe units. Odyssey has already put >them in the field, and has delivered completed units ...unfortunately for >Odyssey at TEK and DEMA, the shipment they had been planning on using for >display was too late out of production. Without casting any doubt on the Odyssey, this was at best a real marketing blunder. Despite what *may* be better tradeoffs for a segment of the diving community, you have to admit that not showing up with A working unit gives an impression like vaporware or manufacturing problems. In the worst case, an instructor could have been paid to show up with a working unit. Other evidence to the contrary, it leads one to question whether or not this is a fielded unit. >The handouts which you must have seen clearly showed the enormous difference >in safety margins. > Which safety margins are you referencing? I've read the web pages and find an alternative configuration that has no more safety margin than other units. By safety margin, I'm refering to more traditional life support meanings: the ability to exceed the rated capacity by x%, duration of y minutes for one class of failures, duration for z minutes for yet another class of failures, etc. If there was a handout different from the web site information I'd like to get a copy. >Safety is superior in the Odyssey because it does not rely on electronics >which will potentially fail, and in so doing allow a diver to become hypoxic >should there be a gas addition failure. Every element in a diving rig has potential for failure. If we're talking MTBF, then the electronics themselves will not contribute significantly to the MTBF attributable to the mechanical components. The FIT rate of semicondutors is substantially lower than any mechanical component that I've reviewed. Of course, case fittings etc can reduce SYSTEM reliability. BTW, there are a number of design techniques used in other life support equipment that are failsafe when the electronics fail. >Mike, the "safe" method of knowing your PO2s is computing the desired mix >based on depth, and using these mixes. I would NEVER trust my life to >electronics ---electronic failures are far too common, even with good dive >computers (I'm sure you know what I mean here Mike ;) Can you give a citation for your claim of electronics failure? Not to get off topic, but if you fly, drive a car, ride a train, have many different medical procedures, you ARE trusting your life to electronics. Henry -- //////////////////////////////////////////////////////////// /Henry Davis / New Product Consulting / /Henry Davis Consulting / Specializing in product life / /3 Russell Circle / cycle for high tech products. / /Natick, Ma 01760 / Market Segmentation, Product / /ph:(508)651-9122 fax:651-2032 / Definition, Prototyping, / / hdavis@ix*.ne*.co* / Market Readiness, Introduction / ////////////////////////////////////////////////////////////
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