SUUNTO Vyper - Manual (Page 23)

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The Mandatory Safety Stop time always includes the three-minute Recom-
mended Safety Stop time. The total length of the Mandatory Safety Stop time
depends on the seriousness of the ascent rate violation.
You must not ascend shallower than 3 m [10 ft] with the Mandatory Safety
Stop warning on. If you ascend above the Mandatory Safety Stop ceiling, a
downward pointing arrow will appear and a continuous beeping starts (Fig.
3.15). You should immediately descend to or below the Mandatory Safety
Stop ceiling depth. However, if you correct the situation whenever during that
dive there are no affects to the tissue calculations.
If you continue to violate the Mandatory Safety Stop, the tissue calculation
model is affected and the dive computer shortens the available no-decompres-
sion time for your next dive. In this situation it is recommended to prolong your
surface interval time before your next dive.
3.2.4. Ascent Rate Indicator
The ascent rate is shown graphically along the right side of the display as fol-
lows:
TABLE 3.2 ASCENT RATE INDICATOR
Ascent Rate Indicator The equivalent ascent speed Example
in Fig.
No segment Below 4 m/min [13 ft/min] 3.8
One segment 4 - 6 m/min [13 - 20 ft/min] 3.9
Two segments 6 - 8 m/min [20 - 26 ft/min] 3.10
Three segments 8 - 10 m/min [26 - 33 ft/min] 3.11
Four segments 10 - 12 m/min [33 - 39 ft/min] 3.12
Four segments, the Above 12 m/min [39 ft/min] or 3.13
SLOW segmen, blinking continuously above 10 m/min
depth reading, the STOP
[33 ft/min]
sign and an audible alarm