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ALTITUDE COMPENSATION
Atmospheric pressure decreases as Altitude increases above sea level. Weather systems
and ambient temperature also affect barometric pressures. Consequently, depth reading
instruments that do not compensate for the decrease in ambient pressure indicate depth
readings shallower than the depth they are actually at.
The Veo 200/250 automatically compensates for decreased ambient pressures for Alti-
tudes between 2,000 (610 meters) and 14,000 feet (4,267 meters). Its program contains
a high altitude algorithm that reduces no decompression and oxygen exposure limits to
add a larger zone of caution.
The Veo 200/250 senses ambient pressure when it is activated, every 15 minutes while it
is activated, or every 30 minutes when it is not activated. At an Altitude of 2,000 feet
(610 meters), it will automatically recalibrate itself to measure depth in feet of fresh water
rather than feet of sea water. It will then readjust the no decompression and oxygen
limits at additional intervals of 1,000 feet (305 meters). Therefore, when returning to
lower Altitudes, diving should not be conducted until the unit automatically clears of any
residual nitrogen and oxygen loading and resets to operate at the new lower Altitude.
WARNING: The Veo 200/250 will not sense ambient pressures or provide
Altitude compensation when it is wet. DO NOT dive at any different Altitude
until the unit shuts off and is reactivated at the new Altitude.
If the unit is activated at elevations higher than 14,000 feet (4,267 meters), it
will perform a diagnostic check followed by immediate shutdown.
