SUUNTO D9tx - Manual (Page 44)

Table 5.3. Audible and visual alarm types
Alarm reason Alarm type
PO2 value is greater than the adjusted value. Current
depth is too deep for the gas in use. You should imme-
diately ascend or change to a gas with a lower oxygen
percentage. High priority alarm followed
by "Start ascending" beep,
repeated for the maximum of
three minutes. The PO2 value
blinks.
PO2 value is smaller than 0.18 bar. In DIVE Mixed
mode only. The depth is too shallow and the ambient
pressure is too low for the current gas. The oxygen
content is too low to keep you conscious. You should
immediately switch the gas. High priority alarm followed
by "Change gas" beep, soun-
ded two times. The PO2
value blinks.
Decompression ceiling depth is exceeded. You should
immediately descend to, or below, the ceiling High priority alarm followed
by "Start descending" beep,
repeated for the maximum of
three minutes. The Er symbol
blinks and an arrow points
downwards.
Maximum allowed ascent rate, 10 m per min / 33 ft per
min, is exceeded. Slow the ascend rate down. High priority alarm, sounded
three times. The SLOW sym-
bol blinks.
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