SUUNTO D4i - Manual (Page 71)

NOTE
Filling your BCD affects the air time calculation due to the tempor-
ary increase in air consumption.
NOTE
The remaining air time is not displayed when either deep stops
or the decompression ceiling have been activated. You can recall
the remaining air time by long-pressing the DOWN button, but
the ceiling disappears.
NOTE
A change of temperature will affect the cylinder pressure and
consequently the air time calculation.
NOTE
If the air time is turned OFF, the air time is not displayed and no
alarm of air time reaching zero is issued.
Low Air Pressure Warnings
The dive computer will warn you with two (2) audible double beeps and a blinking
pressure display when the cylinder pressure reaches 50 bar/700 psi.
Two (2) double beeps are also heard when the cylinder pressure goes down to the
user-selected alarm pressure, and when the remaining time reaches zero.
6.1.4. Ascent rate indicator
The ascent rate is displayed graphically along the right hand side with a vertical bar.
When the maximum allowed ascent rate is exceeded, the lower segment of the bar
starts to blink with the top segment staying solid, indicating that the maximum ascent
rate has been exceeded.
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