User ManualTable of ContentsTable of Contents21. WELCOME TO THE WORLD OF SUUNTO DIVING INSTRUMENTS62. WARNINGS, CAUTIONS, AND NOTES83. SUUNTO D4 AT A GLANCE143.1. Navigating in the menus143.2. Button symbols and functions154. GETTING STARTED WITH YOUR SUUNTO D4184.1. TIME mode settings184.1.1. Setting the alarm194.1.2. Setting the time204.1.3. Setting the dual time204.1.4. Setting the date214.1.5. Setting the units214.1.6. Setting the backlight224.1.7. Setting the tones224.2. Stopwatch234.3. AC water contacts235. BEFORE DIVING255.1. The Suunto RGBM/Deep Stop Algorithm265.2. Emergency ascents265.3. Dive computer limitations275.4. Nitrox275.5. Free diving285.6. Audible and visual alarms285.7. Error conditions315.8. DIVE mode settings325.8.1. Setting the depth alarm345.8.2. Setting the depth notify alarm (FREE mode)355.8.3. Setting the dive-time alarm355.8.4. Setting the nitrox values365.8.5. Setting the personal/altitude adjustments365.8.6. Setting the surface time notify alarm (FREE mode)375.8.7. Setting the sample rate375.8.8. Setting the Deep Stops385.8.9. Setting the RGBM values385.9. Activation and pre-checks385.9.1. Accessing DIVE mode395.9.2. DIVE mode activation395.9.3. Battery power indication415.9.4. Diving at altitude415.9.5. Personal adjustments435.10. Safety Stops455.10.1. Recommended Safety Stops455.10.2. Mandatory Safety Stops465.11. Deep stops486. DIVING496.1. Diving in AIR mode (DIVEair)496.1.1. Basic dive data496.1.2. Bookmark516.1.3. Ascent rate indicator516.1.4. Decompression dives52Ceiling, ceiling zone, floor and decompression range53Display below the floor55Display above the floor55Display at the ceiling zone56Display above the ceiling566.2. Diving in NITROX mode (DIVEnitrox)576.2.1. Before diving in NITROX mode57Default nitrox settings586.2.2. Oxygen displays586.2.3. Oxygen limit fraction (OLF)606.3. Diving in FREE mode (DIVEfree)606.3.1. Day History616.3.2. Free dive time limit637. AFTER DIVING647.1. Surface interval647.2. Dive numbering657.2.1. AIR and NITROX657.2.2. FREE Dive667.3. Repetitive dive planning667.4. Flying after diving667.5. MEMORY mode677.5.1. Dive Planning mode (MEMPlan)68Dive numbering shown during dive planning707.5.2. Dive logbook (MEMLogbook)707.5.3. Dive history (MEMHistory)72Scuba History72Free Dive History727.6. Suunto Dive Manager (SDM)737.7. www.suuntosports.com and Suunto Diving World at www.suunto.com/diving758. CARE AND MAINTENANCE OF MY SUUNTO DIVING COMPUTER769. BATTERY REPLACEMENT8110. TECHNICAL DATA8210.1. Technical specifications8210.2. RGBM8510.2.1. Suunto RGBM adaptive decompression8610.2.2. No-decompression limits8710.2.3. Altitude diving9010.3. Oxygen exposure9011. INTELLECTUAL PROPERTY9211.1. Copyright9211.2. Trademark9211.3. Patent notice9212. DISCLAIMERS9312.1. User’s responsibility9312.2. CE9313. SUUNTO LIMITED WARRANTY for Suunto diving computers and Suunto Diving computer accessories9414. DISPOSAL OF THE DEVICE100GLOSSARY101Size: 3.12 MBPages: 106Language: EnglishOpen manual