User manual DAEWOO ELECTRONICS FRN-U20FCC

[. . . ] MATRIX MANUAL Safety Considerations You must carefully read this entire manual before using your Matrix. Even if you follow the instructions in this manual carefully, it is possible that you may be seriously injured or die from decompression sickness, or some other inherent risk of SCUBA diving. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the Matrix!The Matrix is a sophisticated decompression tool to assist a trained and certified SCUBA diver in making decisions concerning dive planning and execution. [. . . ] After exceeding the 10 dive limit, the newest dive is added to memory while the oldest dive is deleted. Dive Log Display When you enter Dive Log Mode (figure 11), the Matrix displays the logbook Icon (a) with the dive number (b) immediately to the right. Maximum depth (c) and total bottom time (d) are located at the bottom of the screen. The Compartment Loading Bar Graph (e) shows the nitrogen loading level at the end of the dive. The ascent rate indicator (f) shows the fastest ascent rate during the dive. Lastly, if a decompression stop was required during the dive, the "DECO" label (g) is displayed. Extreme Situations EXCEEDING THE MAXIMUM DEPTH The Matrix displays the current depth down to 250 feet (76 m). (76 m), the current depth and maximum depth will display three dashes (figure 12), indicating that the Matrix is beyond its depth range. (76 m), the current depth display returns to normal, while the maximum depth continues to show three dashes. Note: If you exceed the 250 foot (76 m) limit, three dashes will be displayed as the maximum depth when you view the dive in Dive Log Mode. (76 m), the depth at which you can use all its features can be much shallower. Before going further, read the following warning: WARNING: The maximum recommended sport diving limit is 130 feet (40 m). Figure 12 Exceeding the Maximum Depth EMERGENCY DECOMPRESSION After entering decompression, the prescribed decompression stop depths may move quickly through the 10, 20, 30 and 40 foot (3, 6, 9, 12 m) displays. Once you enter decompression, it is imperative that you ascend toward the required stop depth immediately. If you continue the dive at a greater depth, you increase decompression risk and may also exceed the operating limits of the computer to such an extent that the computer will cease to provide ascent information. WARNING: If the Matrix display indicates you have entered decompression mode, do not descend further or remain at the same depth. The decompression stop obligation can increase quickly and once the exposure requires a greater than 40-foot (12 m) stop, the Matrix will enter Immediate Violation Mode, and no longer provide ascent information. This situation increases the risk of decompression sickness and must be avoided. For these reasons, sport divers should not attempt decompression diving. Making a dive that requires decompression stops should be avoided because you cannot ascend directly to the surface without risking personal harm. If equipment problems delayed your ascent, your risk of decompression sickness would increase. Your buddy would be unable to lend assistance without also risking decompression sickness. [. . . ] Using two hands, push in on the back of the console boot with your thumbs, while, at the same time, peeling the upper lip of the console boot over the top of the Matrix module. At this time, you may want to clean the interior of the console boot with warm fresh water to remove any salt crystals. Battery Removal and Installation Note: Perform battery removal and installation in a dry, clean environment, taking extreme care to prevent the entrance of moisture or dust. Using a nickel or quarter (never use a screwdriver), turn the battery hatch (figure 18, a) counterclockwise and remove it from the case back. [. . . ]