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DANGER
Never dive in a manner that requires a decompression stop (decompression
diving).
If decompression diving should happen to occur, immediately start to ascend while
observing an ascent rate of no more than 18 m (60 ft)/min. Make a decompression
stop while ascending in accordance with decompression stop instructions.
When making a decompression stop, never ascend to a depth less than the instructed
depth. In addition, since it is difficult to maintain a constant depth when there are high
waves and so forth, make decompression stops at depths a little deeper than the
instructed depth to prevent decompression sickness.
* A permanent error (ERROR) occurs when continuing to dive while ignoring decompression stop
instructions during the course of decompression diving, and the watch will not switch to the dive
mode for 24 hours after that time.
2. Safety Stop Graph and Decompression Stop Graph
A. Safety Stop Graph Display
A graph serving as a general reference for changes in depth during safety stop and the
elapsed time during a safety stop are displayed after having descended to a depth of more
than 5 m (15 ft) and then ascended to a depth of 5 m (15 ft) during scuba diving (no-
decompression diving).
Reading the Safety Stop Graph
The horizontal axis of the graph represents elapsed time,
while the vertical axis represents changes in depth over a
range of 3 m (10 ft) to 7 m (23 ft) centering around a depth
of 5 m (15 ft).
B. Decompression Stop Graph
When having ascending to the instructed depth of the
decompression stop during decompression diving, a graph
is displayed that provides a general reference for changes
in depth during decompression stop at a depth of the
instructed depth ±1 m (4 ft).
Reading the Decompression Stop Graph
The horizontal axis of the graph represents elapsed time, while the
vertical axis represents changes in depth over a range of ±1 m (4 ft)
from the decompression stop instructed depth.
3. Depth Measurement
This watch measures depth every second, and continuously displays the current depth in
0.1 m (0.3 ft) units during the course of diving.
• Measuring range: 1 m to 80 m (4 ft to 266 ft)
* 0 m (0 ft) is displayed at depths of less than 1 m (4 ft), while - -.- m is displayed at depths greater
than 80 m (266 ft).
* When an error has occurred in depth measurement during the course of diving, "ERR" and the diver
mark are alternately displayed until that dive is completed.
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Safety stop
graph
Safety
stop time
Decompression stop graph
Instructed
time
Instructed depth