Mailing List Archive

Mailing List: techdiver

Banner Advert

Message Display

Date: Fri, 3 Sep 1999 10:42:36 -0400 (EDT)
From: "William M. Smithers" <will@tr*.co*>
Subject: Re: Rebreather problems?
To: Josep Guarro <jep@re*.es*>
Cc: techdiver@aquanaut.com

On Fri, 3 Sep 1999, Josep Guarro wrote:

> Also It doesn't exists such a thing like a "software free of bugs",
> then this can be applied to all electronic rebreathers.

Actually, if you look at it, the amount of code controlling
an electronic rebretather is pretty small - usually a few
Kilobytes, at most - thousands of times smaller than your typical
Windows application.  With so few "function points", you
actually can completely eliminate firmware bugs.

When was the last time you had your microwave oven fail 
due to a software bug?  They don't - they fail for hardware
reasons.  That's about the same level of complexity as 
a rebreather controller.

Not that the bugs *have* been eliminated in many electronic
CCR's - just that it's not that hard to do.

-Will






 
> --Josep--
> 
> On Fri, 3 Sep 1999 11:00:40 +0900 , "Taylor, John"
> <john.taylor@cs*.co*.uk*> wrote:
> 
> >I think the major worry hear is why the unit would ask you to do this at
> >depth, as Errol has pointed out. We have several Inspiration users here in
> >HK who use them for their work, and we have in fact discussed this
> >"feature". I know they were made aware during their training that this could
> >happen, and were definitely informed not to recalibrate at depth.
> >
> >I sincerely suspect that task loading combined with the wrong gas caused the
> >problem. I would have thought, however, that this "feature" could be
> >improved or removed.
> 
> --
> Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
> Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
> 
--
Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'.
Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]