SUUNTO VYTEC User Manual

Page 43

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.

Altitude Adjustment and Personal Adjustment Setting describes how

the Personal Mode is adjusted.
This feature should be used to adjust the computer to be more conser-

vative, according to personal preference, by entering the suitable Per-

sonal Adjustment Mode with the help of Table 3.4. 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 com-

puter adjusts its mathematical model according to the entered Personal

Adjustment Mode, giving shorter no-decompression times (see section

6.1. Operating 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