Cal.D710 Setting Instruction : Diving Mode

Refer to "Cautions Regarding Use During Diving"

Mode Change Flow

Using the Dive Mode

This mode measures water depth while in the water. The watch automatically switches to the dive mode when the water sensor detects water in any mode except for the infrared communication mode and power save mode. The watch automatically begins to measure water depth when the water depth reaches 1 m (4 ft) or more during the preliminary dive display. During diving, the dive computer performs calculations corresponding to the set dive condition, and displays information required by the diver, including the current depth, dive time and maximum depth.

*	During the preliminary dive display, the diver mark flashes in the lower left corner of the display and the display of each mode prior to switching to the preliminary dive display is maintained.
*	Once measurement of water depth begins, if diving continues for more than 3 minutes at a depth of more than 1 m (4 ft), the watch switches to the scuba diving display and displays no-decompression limit time.
*	The diver mark flashes in the lower left corner of the display while diving.

During NITROX diving, always make sure to check that the oxygen concentration (O2%) is correctly set to the oxygen concentration of the tank actually used prior to diving.
Oxygen concentration (O2%) cannot be set or changed while in the water or after starting a dive. Always make sure to set oxygen concentration prior to diving.

Before starting a dive, always make sure to check that the "Diver Mark" is flashing in the lower left corner of the display during the preliminary dive display.
The water depth measurement function will not operate if "BATT", "ERR" or "CHK" is flashing in the lower left corner of the display during the preliminary dive display (indicating that a warning function has been activated). In the state in which "CHRG" (Charge) is displayed, the watch may become insufficiently charged while diving. In addition, even if the insufficient charge warning function ("BATT" is displayed) has not been activated, to avoid the watch becoming insufficiently charged while diving, start the dive after first sufficiently charging the watch.
* Refer to "Warning Functions" for further details.

Explanation of Display During Water Depth Measurement
The display during diving differs between the AIR setting (air diving) and NITROX setting (NITROX diving). Even in the case of performing scuba diving, the watch displays the skin diving display until 3 minutes or more have elapsed continuously at a depth of 1 m (4 ft) or more.

A. Display during AIR Setting

B.Display during NITROX Setting


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.

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 to -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 to -1 m(4 ft) from the decompression stop instructed depth.

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.

Dive Time Measurement

The elapsed time of dives made to a depth of more than 1 m (4 ft) is displayed. Measurement of dive time starts automatically when the depth exceeds 1 m (4 ft) for the first time, and stops when the depth again is less than 1 m (4 ft). However, if a dive is resumed to a depth of more than 1 m (4 ft) within 10 minutes from the time measurement of dive time stopped, dive time is continued to be measured from the time measurement stopped. Dive time is displayed for up to 9 minutes 59 seconds from the start of measurement in 1 second units. Beyond that time, dive time is displayed in 1 minute units.

. Measuring range: 0 minutes 00 seconds to 999 minutes 59 seconds

Water Temperature Measurement

The watch begins to measure water temperature one minute after the water depth reaches a depth greater than 1.0 m (4 ft), and the most recently measured water temperature is continuously displayed in 1deg.C (33.8deg.F) units at 1 minute intervals while diving. However, water temperature is only displayed when the lower right button (A) is pressed during decompression diving. (Water temperature measured in 0.1deg.C (32.2deg.F) units rounded and displayed 1deg.C (33.8deg.F) units.)

. Measuring range: -9.4deg.C to +40.0deg.C (15deg.F to 104deg.F)

No. of Dives Per Day and Recording Log Data

A maximum of 15 dives of log data can be recorded a per day for both skin diving and scuba diving. When the number of sets of log data exceeds 15, log data is no longer recorded during diving. Even though log data is not recorded, the watch will continue to measure depth and perform its various other functions during diving.
In case the number of dives per day for skin diving exceeds 15, and the number of dives per day for scuba diving is 14 or less, "FILE" mark is displayed for the first 3 minutes on the watch display. But scuba diving log is held properly. After 3 minutes, the watch display automatically changes to scuba diving instead of skin diving, then "FILE" mark disappears.

Ending the Dive Mode

	The watch returns to the surface mode or the time mode of the standard mode when the lower left button (D) is pressed for at least 2 seconds and then released when 0 m (0 ft) is displayed after completion of a dive.
	The watch automatically returns to the surface mode or time mode of the standard mode after roughly 10 minutes have elapsed since 0 m (0 ft) is displayed following water depth measurement.

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