Quote: (Originally Posted by
caveseeker7)
Steam Machines PRISM Topaz (details in the article in the library):
slowly pulsating green = target setpoint
red flashing = high pO2
blue flashing = low pO2
Green and red are one LED, so the frequency helps the color blind.
The blue LED is a separate one.
My Prism manual states
RIGHT LED green (on, does not pulse) = system operating normally (i.e. target setpoint)
RED (dim) = Oxygen is 1/10 ATA above setpoint
RED (bright) = Oxygen is 2/10 ATA above setpoint
RED (flashing) = Oxygen PO2 is 1.55 ATA or greater
CENTER LED (blue)
OFF = A.OK.
ON = Oxygen is 2/10 ATA or more under setpoint.
RIGHT LED (red/green)
GREEN (flashing) = sensor(s) out of range
RED (flashing) = low battery power
(if both conditions are true, then this LED alternates flashing red/green).
IMO, this is one of the nicest HUD's to actually USE on a dive. Anything flashing, or any color than green means "check your secondary and then deal with the situation".
Cheers,
-Richard