Quote: (Originally Posted by
Drmike)

so different software, functionality and connectivity is your definition of 'the same' is it? LOL!
Rubbish. as all the HH share same design (this model) then they will all behave the same way re: these tests.
Hardware is the same.. The loaded Software is different.. There is ONE connector connection difference between the 2... This involves 2 signals on the primary a supply and ground, and 4 on the secondary, supply, 2 leds and a vibrator connection. If anythink the secondary is more exposed..
The failure listed apears to be a hardware not a software failure, so the results should be similiar on both..
Also rember the secondary is just a build option, most of the software between the two is shared.. The primaries CAN control a HUD, just that its not connected and normally not enabled - but the software IS in there..
As stated above they WOUN'T behave teh same, you always get SOME failures its just how many... The only way to prevent all failures is to not have access to ANYTHING outside of the box or have multiple levelsof shielding/isolation on everything, which obviously can't be done on a rebreather... That means Heavy shielded and isolated cables (heaver than anyone currently uses) RF seals besides water seals and a bunch of other things..
Wet switches would have to be removed because it could effect ground, which in real life it couldnt because you would be in water and the field/voltage would be severely attenuated.. A fair test would then be to test the unit SUbmerged and with a ground rod into the water bath..