User manual CASIO QW-691

[. . . ] Navigating in the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Button symbols and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GETTING STARTED WITH YOUR CASIO Vyper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TIME mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] After 30 - 60 seconds (sometimes more, depending on your air consumption), the first estimation of remaining air time will be shown in the left center window of the display. The calculation is always based on the actual pressure drop in your cylinder and will automatically adapt to your cylinder size and current air consumption. The change in your air consumption will be based on constant one second interval pressure measurements over 30 - 60 second periods. An increase in air consumption will influence the remaining air time rapidly, while a drop in air consumption will increase the air time slowly. In this way, an over optimistic air time estimation, caused by a temporary drop in air consumption, is avoided. The remaining air time calculation includes a 35 bar/500 psi safety reserve. This means that when the instrument shows the air time to be zero, there is still about 35 bar/500 psi of pressure left in your cylinder, depending on your air consumption rate. With a high consumption rate, the limit will be closer to 50 bar/725 psi and with a low rate closer to 35 bar/500 psi. 30 NOTE NOTE Filling your BC affects the air time calculation due to the temporary increase in air consumption. A change of temperature will affect the cylinder pressure and consequently the air time calculation. Low Air Pressure Warnings The dive computer will warn you with three audible double beeps and a blinking pressure display when the cylinder pressure reaches 50 bar/725 psi. Three double beeps are also heard when the cylinder pressure goes down to the user-selected alarm pressure and when the remaining air time reaches zero. Ascent rate indicator The ascent rate is shown graphically along the right hand side. Decompression will start when you pass this depth during your ascent · The decompression range is the depth range between the ceiling and floor. Within this range, decompression takes place. However, it is important to remember that the decompression will be very slow at, or close to, the floor The depth of the ceiling and floor will depend on your dive profile. The ceiling depth will be fairly shallow when you enter the decompression mode, but if you remain at depth, it will move downward and the ascent time will increase. Likewise, the floor and ceiling may change upwards while you are decompressing. When conditions are rough, it may be difficult to maintain a constant depth near the surface. In such cases, it is more manageable to maintain an additional distance below the ceiling, to make sure that the waves do not lift you above the ceiling. Suunto recommends that decompression takes place deeper than 4 m/13 ft, even if the indicated ceiling is shallower. NOTE WARNING It will take more time and more air to decompress below the ceiling than at the ceiling. You must not ascend above the ceiling during your decompression. In order to avoid doing so by accident, you should stay somewhat below the ceiling. 32 Display below the floor The blinking ASC TIME and an upward pointing arrow indicate that you are below the floor. [. . . ] The maximum amount of time a diver may remain at a particular depth without having to make decompression stops during the subsequent ascent. Any dive which permits a direct, uninterrupted ascent to the surface at any time. CNS CNS% Compartment DAN DCI Decompression Decompression range Decompression illness Dive series Dive time EAD EAN Enriched air nitrox Equivalent air depth Floor Half time Multi level dive Nitrox NOAA No decompression time No decompression dive 61 NO DEC TIME OEA = EAN = EANx OLF OTU Oxygen tolerance unit Oxygen limit fraction O2% Oxygen partial pressure Abbreviation for no decompression time limit. Abbreviations for oxygen enriched air nitrox. Used to measure the whole-body-toxicity. [. . . ]