SUUNTO Vyper Air - Manual (Page 52)

10.2.1. Suunto RGBM adaptive decompression
The Suunto RGBM algorithm adapts its predictions of both the effects of microbubble
build-up and adverse dive profiles in the current dive series. It also changes these
calculations according to the personal adjustment you select.
The pattern and speed of decompression at the surface is adjusted according to
microbubble influence.
On repetitive dives, adjustment may also be applied to the maximum allowable nitrogen
overpressure in each theoretical tissue group.
Depending on the circumstances, Suunto RGBM will adapt the decompression obligations
by doing any or all of the following:
•
Reducing No-decompression Stop dive times
• Adding Mandatory Safety Stops
• Increasing Decompression Stop times
• Advising an extended surface interval (Diver Attention symbol)
Diver Attention Symbol – Advice to Extend Surface Interval
Some patterns of diving cumulatively add a higher risk of DCI; for example, dives with
short surface intervals, repetitive dives deeper than earlier ones, multiple ascents, and
substantial multiday diving. When this is detected, in addition to adapting the decompression
algorithm, the Suunto RGBM model will in some circumstances also advise, with the Diver
Attention Symbol, that you extend your surface interval.
10.2.2. No-decompression limits
The no-decompression limits displayed by the dive computer for the first dive to a single
depth (see Table 10.1, No-decompression time limits for various depths (m) and Table 10.2,
No-decompression time limits for various depths (ft) .), are slightly more conservative than
those permitted by the U.S. Navy tables.
Table 10.1. No-decompression time limits for various depths (m)
No-decompression time limits (mins) for various depths (m)
for the first dive of a series
Personal Mode / Altitude Mode Depth
(m)
P2/A2 P2/A1 P2/A0 P1/A2 P1/A1 P1/A0 P0/A2 P0/A1 P0/A0
75
45
29 96
54
35 130
67
43 96
54
35 130
67
43 163
89
57 130
67
43 163
89
57 --
124
72 9
12
15
21
15
12 25
20
16 30
23
19 5
20
16 30
23
19 39
29
24 30
23
19 39
29
24 52
37
29 18
21
24
9
7
6 12
9
8 15
12
9 12
9
8 15
12
9 18
14
11 15
12
9 18
14
11 23
18
13 27
30
33
5
4
4
3 6
5
4
4 8
6
5
5 6
5
4
4 8
6
5
5 9
7
6
5 8
6
5
5 9
7
6
5 11
9
7
6 36
39
42
45
52