Today’s dive computers are more complex than ever. When you first unpack a new dive computer you have to carefully set its parameters; deciding whether you want to track depth in feet or meters and get temperature readings in Celsius or Fahrenheit is just the beginning. Once those are set, there’s no need to change them. Understanding the functions that change from one dive to the next is even more important.
Selecting Algorithm
Not all dive computers allow you to set your own algorithm. With this feature, you can choose to make allowances for diving conditions, how you’re feeling, or even how your dive buddy’s algorithm works. Algorithms vary from one computer to the next, so setting similar parameters can help ensure you and your buddy have similar bottom time, no-deco limits, and a similar dive profile.
Setting Conservative Factor
Nearly all dive computers allow divers to set a level of conservatism for each dive. You’ll need to take internal and external factors into consideration as you do this; in addition, you may need to refer back to no-deco countdown basics to create a workable game plan for your dive.
Set Your Computer to Air or Nitrox
Almost every dive computer sold today provides the user with a choice; most have default nitrox settings that are automatically activated after 24 hours, so you’ll need to double-check this setting before every dive. This ensures your cylinder and your dive computer are compatible, particularly in the event you’re traveling and breathing 32 percent Nitrox one dive and 36 percent the next. Always check and double check this feature.
Setting Alarms (Turn Around, Tank Pressure, and Maximum Depth)
Whether you prefer audible alarms or visual alarms, it’s critical that you set them correctly, particularly if you’re diving at a site that has plenty to distract you from your equipment! Make setting your alarms a central part of dive planning for each and every dive; your well-being and your life depend on these critical dive computer features.
Set Safety Stop Parameters
Your dive computer may or may not allow you to set your own safety stop parameters. If you can program your own safety stop, remember that standards dictate that a safety stop consists of three minutes at a depth of fifteen to twenty feet. If you know you’re going to be pushing your limits, consider treating yourself to a five minute safety stop, instead.
Set Deep Stop Parameters
Not all dive computers are equipped with deep stop functions. As there is continued controversy over whether deep stops are beneficial or not, it’s up to you to decide whether to take them or not. Some safety experts say that you should take deep stops if your computer gives you the option; others say don’t bother. In the event your dive computer offers deep stop capability and you elect not to take a deep stop, you can simply disable the function.
Before diving with a new computer, familiarize yourself with its features, read all accompanying literature, and get answers to any questions you may have. Taking the time to do this will get you better acquainted with your dive computer, plus it will provide you with greater safety .