Seiko DH33 Manual - Page 3

English PRECAUTIONS FOR DIVING ● Strictly observe the precautions below to enjoy safe diving with the SEIKO Diving Computer Cal. DH33. IN GENERAL ● Do not stay underwater beyond the no-decompression limits. ● When you have descended below 15 m (50ft), be sure to make a safety stop in ascent at 3 to 6 m (10 to 20 ft). If the watch gives a decompression warning, it is recommended that you stay at the decompression stop depth longer than the stop time that the watch indicates. * While making a decompression stop, be sure to check the amount of air remaining in your tank. ● The watch does not indicate the amount of air in your tank. Use a submersible pressure gauge to check it. ● For safety's sake, use other diving equipment such as dive computer, depth gauge and another diver's watch together with the watch. ● The watch cannot serve as your "buddy". Abide by the rules of scuba diving, and never dive alone even if you have the watch on your wrist. ● Abrupt change of altitude after diving is extremely hazardous to your health. Do not move across the altitude ranks that the watch indicates. BEFORE DIVING ● Check that: • the watch is operating normally. • there are no visible scratches or cracks in the band and crystal. • the band is securely fastened to the watch case. • the battery life indicator (battery mark) is not shown on the display. • all segments of the display are not flashing. • the altitude rank mark is not flashing. • not all nine residual nitrogen indicator bars are lit up. 4 * If you find any malfunction, do not use the watch for diving. ● If the temperature of the watch is much higher than that of the water, for example, after having been left under direct sunlight before being put in water, the watch may not measure the depth of water accurately. Soak it in water for approximately 5 minutes before using it for diving. ● Be sure to check that the actual percentage of oxygen in your tank (FO2) is properly set for the watch. FO2 cannot be readjusted while you are underwater. ● Check that the measurement units of depth and temperature are set according to your requirement. They can be selected from "meters (m) and centigrade (° C)" and "feet (ft) and Fahrenheit (° F)". WHILE DIVING ● Take care not to hit the watch against hard objects such as rocks. ● Check that the watch indicates the current depth properly. If "- - -" or "Err" is shown when the current depth is less than 100 m (329 ft), stop using the watch immediately, and use other diving equipment such as diving computer, depth gauge and another diver's watch you have with you. ● While in the dive mode, the display cannot be changed over to modes other than time/calendar by pressing button "C". ● Depending on the aquatic environment where the watch is used, the beeping sound of the regular alarm and warnings may or may not reach your ears. ● The watch measures the depth of water on the basis of seawater having a specific gravity of 1.03. When it is used in fresh water such as lakes, therefore, the displayed depth should be corrected by multiplying it by 1.03. Nodecompression limits, however, will be calculated and displayed normally without any adjustment. Ex.) If the displayed depth of the water is 19.4 m (64 ft) in fresh water (specific gravity 1.00), the actual depth is: 19.4 m x 1.03/1.00 ˺ 20.0 m (66 ft) AFTER DIVING ● Be sure to rinse the watch in fresh water, and wash out all seawater, soil, sand, etc. ● After cleaning the watch in fresh water, be sure to wipe it thoroughly dry. ● If the watch is left soaked in water for a long time for removing salt or other purposes, the auto sensor function is activated and consumes battery energy. ● If a grain of sand or the like gets in the pressure sensor, rinse the watch in fresh water to wash it out. Do not use anything with a pointed tip to pick it out or an air blast to blow it out. If it sticks in the pressure sensor and cannot be washed out, consult the retailer from whom it was purchased. ● Be careful not to expose the pressure sensor to solvents such as alcohol and gasoline, as this will cause malfunctions. ● When the surface interval time is less than 10 minutes, time/ calendar setting, FO2 setting and hour correction cannot be made. ● If the measurement exceeds the measurable range of the watch, all the segments of the display flash. In that case, the watch cannot be used for diving for 48 hours after the dive is over. English CONTENTS Page WARNING 2 PRECAUTIONS FOR DIVING 4 FEATURES 6 BUTTONS AND DISPLAY CHANGE 7 HOW TO USE TIME FUNCTIONS 8 ■ TIME/CALENDAR FUNCTION 8 TIME/CALENDAR SETTING 8 ■ REGULAR ALARM FUNCTION 9 REGULAR ALARM SETTING 9 ENGAGEMENT/DISENGAGEMENT OF REGULAR ALARM AND HOURLY TIME SIGNAL ......... 9 ■ ILLUMINATING LIGHT 10 ■ HOUR CORRECTION FUNCTION 11 HOW TO USE THE HOUR CORRECTION FUNCTION . 11 HOW TO USE DIVE COMPUTER FUNCTIONS ......... 12 ■ NITROX DIVING FUNCTION 12 HOW TO SET FO2 12 ■ ALTITUDE COMPENSATION 14 ■ SELECTION OF MEASUREMENT UNITS 14 HOW TO SET THE DEPTH & TEMPERATURE UNITS .. 14 ■ DIVE PLAN FUNCTION 15 HOW TO USE THE DIVE PLAN FUNCTION 15 ■ DIVE FUNCTION 16 DISPLAY WHILE DIVING 16 DISPLAY AFTER A DIVE 19 ■ DIVE LOG FUNCTION 20 HOW TO RECALL LOG DATA 20 USE OF TERMS IN THIS MANUAL 23 DEFINITION OF THE TERMS AND BASIC DESIGN OF THE WATCH 23 EXPLANATION OF THE TERMS 24 BATTERY CHANGE 26 TO PRESERVE THE QUALITY OF YOUR WATCH 27 TROUBLESHOOTING 28 SPECIFICATIONS 29 5