[PSUBS-MAILIST] SCMv2 - Submarine Control Manager

Jon Wallace via Personal_Submersibles personal_submersibles at psubs.org
Tue Apr 12 11:51:48 EDT 2016


Yes, I read that section also but none of these alarms are related.  I 
like your logic so I'm going to leave them randomized.  I also like that 
choice because I don't have to go in and change any code.  :)

Jon

On 4/12/2016 11:10 AM, Sean T. Stevenson via Personal_Submersibles wrote:
>
> It does say that multiple related failures (alarms associated with a 
> single subsystem failure) should be indicated by a single alarm, 
> rather than relying on the operator to deduce a system failure from 
> multiple simultaneous alarms. I don't think synchronisation of the 
> flashes matters at all, but if the alarms are unrelated, I would be 
> inclined to leave them offset versus synchronising them (other than 
> the audible signal if modulated), because I would tend to 
> subconsciously associate synchronised indicators with a common source 
> of failure. If software controlled and indicated, it's a no brainer to 
> do it either way. With physically illuminated switches, flashing 
> indicators are accomplished by switching lamps with electromechanical 
> or solid state relays, which is probably why ABS left it open. If it 
> were up to me, I would synchronise related alarms and randomize 
> unrelated ones.
>
> Sean
>
>



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