Crest Audio CR4 - Scuba Mode Operation: Decompression Guidance; Scuba Under Water Mode (NDL Exceeded - Ceiling); Scuba Under Water Mode (Ascending to Ceiling)

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1.4.1 Scuba Mode
Description: Scuba Under Water Mode –
When the NDL has been exceeded
Image on Top: Normal Display
Image at bottom: Large Display
DECO:
When exceed time passes over 3
minutes, it will show in: - minutes.
CEILING: The depth at which divers
should ascend to and remain when they
are required to perform decompression
stops.
Description: Scuba Under Water Mode -
When exceed the NDL and ascent to
ceiling depth.
Image on Top: Normal Display
Image at bottom: Large Display
STOP: (Decompression Stop)
After reaching CEILING depth, the
remaining amount of time indicated on
the screen will be displayed as
countdown timer. Please remain at the
ceiling depth the entire duration
indicated by the countdown timer if you
have enough air and no other potential
risks are evident.
If you do not remain at the ceiling depth
for the entire duration indicated by the
countdown timer, there will be alarm
warning (short beeping repeated) with
vibration.
CEILING: The depth at which divers
should ascend to and remain when they
are required to perform decompression
stops.