User manual

4
ALADIN SQUARE USER MANUAL
1.5 Set Up/Down Time Counter for the dive ................................................ 27
1.6 Algorithm selection ................................................................................ 27
1.7 HR enable ............................................................................................. 28
2. Square as a dive computer ................................................................................ 28
2.1 Diving with Square ................................................................................. 28
2.2 Altitude diving ........................................................................................ 29
2.2.1 Altitude classes, altitude warning and no-fl y time after a dive. . 29
2.2.2 Altitude and the decompression algorithm .............................. 30
2.2.3 Prohibited altitude .................................................................. 30
2.2.4 Decompression dives in mountain lakes ................................. 31
2.3 No-dive warning after a dive .................................................................. 31
2.4.1 Desaturation reset ................................................................. 31
2.5 Diving with nitrox or with another decompression gas ........................... 32
2.5.1 Diving with more than one gas mix ......................................... 33
2.5.1.1 Switching gas mixture during the dive .........................33
2.5.1.2 Switching back to a gas mixture with lower oxygen
concentration ..............................................................34
2.5.1.3 Gas switch not carried out at the planned depth .........34
2.5.1.4 Delayed gas switch .....................................................34
2.5.1.5 Manual gas switch at a depth deeper than its MOD ....34
2.5.1.6 Submerging below the MOD after a gas switch ...........34
2.6 Warnings and alarms ............................................................................. 34
2.6.1 CNS O
2
= 75% ....................................................................... 35
2.6.2 No-Stop time = 2 minutes ...................................................... 35
2.6.3 Entering decompression ........................................................ 35
2.6.4 Entering level stops ................................................................ 35
2.6.5 L0 no stop time = 2 minutes when diving an MB level ............ 36
2.6.6 Entering deco when diving an MB level .................................. 36
2.6.7 Ascent rate ............................................................................ 36
2.6.8 MOD/ppO
2
............................................................................. 37
2.6.9 CNS O
2
= 100% ..................................................................... 37
2.6.10 Missed decompression stop .................................................. 38
2.6.11 Low battery ............................................................................ 38
2.7 Display information ................................................................................ 38
2.7.1 Display confi guration during the dive ...................................... 39
2.7.2 Setting bookmarks ................................................................. 39
2.7.3 Safety stop timer .................................................................... 40
2.7.4 Activating the backlight .......................................................... 40
2.7.5 Diving with MB levels ............................................................. 40
2.7.6 Display information ................................................................. 40
2.7.7 Display of underlying L0 decompression information .............. 41
2.7.8 Cascading MB levels .............................................................. 41
2.7.9 Level stop ignored/MB level reduced ...................................... 41
2.7.10 PDI Stops .............................................................................. 41
2.8 Gauge mode ......................................................................................... 42
2.9 Apnea mode ......................................................................................... 43
3. Square accessories ............................................................................................ 44
3.1 HR belt .................................................................................................. 44