Suunto VYTEC DS manual Personal Adjustment Ranges

•cold exposure - water temperature less than 20 °C [68 °F]

•the diver is below average physical fitness level

•diver fatigue

•diver dehydration

•previous history of DCI

•stress

•obesity

The Personal Adjustment Mode is indicated by a diver symbol and plus signs (P0 = a diver, P1 = diver +, or P2 = diver ++). Section 4.3.1.1. ”Al- titude Adjustment and Personal Adjustment Setting” describes how the Personal Mode is adjusted.

This feature should be used to adjust the computer to be more conserva- tive, according to personal preference, by entering the suitable Personal Adjustment Mode with the help of Table 3.5. In ideal conditions, retain the default setting, P0. If conditions are more difficult or other mentioned factors which tend to increase the possibility of DCI exist, select P1 or even the most conservative P2. As a result the dive computer adjusts its mathematical model according to the entered Personal Adjustment Mode, giving shorter no-decompression times (see section 6.1. ”Operat- ing Principles”, Table 6.1 and 6.2).

TABLE 3.5. PERSONAL ADJUSTMENT RANGES

The Vytec also allows experienced divers who are willing to accept a greater level of risk to adjust the RGBM model. The default setting is RGB100 which gives full (100%) RGBM effect. Suunto strongly advises to use full RGBM effect. Statistically very experienced divers have less incidents with DCI. The reason for this is unknown, but it is possible that some level of physiological and or psychological accommodation can take place when you are very experienced as a diver. Thus for certain divers and diving conditions you may want to set attenuated (50%) RGBM

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