SUUNTO Stinger - Manual (Page 45)

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DISPLAY BELOW THE FLOOR
The blinking ASC TIME and an upward pointing arrow
indicate that you are below the floor (Fig. 3.17.). You
should start your ascent immediately. The ceiling depth
is shown on the left and the minimum total ascent time
on the right side of the center window.
DISPLAY ABOVE THE FLOOR
When you ascend above the floor, the ASC TIME
display stops blinking and the upward pointing arrow
disappears (Fig. 3.18.). Decompression will now begin,
but is very slow. You should therefore continue your
ascent.
DISPLAY AT THE CEILING ZONE
When you reach the ceiling zone, the display will show
you two arrows pointing at each other (the "hour glass"
icon, Fig. 3.19.). Do not ascend above this zone.
During the decompression stop, ASC TIME will count
down towards zero. When the ceiling moves upwards,
you can ascend to the new ceiling. You may surface
Fig. 3.19. Decompression dive,
at ceiling zone. Two arrows point
at each other ("hour glass"). You
are in the optimum ceiling zone
at 3.5 m [11 ft] and your
minimum ascent time is 5
minutes.