The Suunto D9 Scuba Dive Computer In Action
"A revolution in recreational scuba diving computers", that's what has been said of the Suunto D9. It includes both a digital compass and wirelessly monitored pressure gauge, in one good looking wrist unit, the first of its kind to do so. Now you don't have to watch multiple instruments, it keeps tabs on everything, your depth, decompression data, dive time, tank pressure and direction. All your critical dive data, in an easy to read format, just by taking a single glance at the dive computer on your wrist. It's easy to keep track of exactly how much time you can spend underwater, your depth, max bottom time, ascent rate - in fact all you need to know, to get the most out of your diving. Digital Compass:The D9 incorporates a compass that works just as well on the surface as underwater. Bearings and headings can be saved on this digitaldive computer , and the compass will steer you in the correct direction. The display shows both a graphical direction and an exact bearing in degrees. When triangular or a square patterns of navigation are needed, the display lets you know when you're going at a 90 or 120 degrees to the saved bearing, as well as when you're moving directly toward or away from the target. Wireless Transmitter:
The wireless transmitter is a great piece of kit, and very functional. It is screwed to the 1st stage, and wirelessly sends tank and pressure data to the display and to memory storage. Air-time andtank pressure details are displayed, and your real-time tank pressure data is stored for later analysis on your PC. Although the transmitter is sold as an optional extra, just why you would not want it, is beyond me. It is one of the main selling points of the D9. If you don't need this facility then I think the D6 would be better bet, and it's cheaper. Operating Modes:
The Suunto D9 is similar to some other dive computers in that it has three operating modes- Air, Nitrox, or Gauge. Air mode is used for normal air dives and the Nitrox mode can be used with up to 3 different gas mixes during a dive. The Gauge mode - usually used for free-diving, gives detailed timing functionality. With Suunto's advanced RGBM decompression algorithms, you can elect to use traditional safety stops or additional deep stops, which are calculated throughout the dive. It also has a maximum depth display set to approximately 200m (660 ft.). After the dive is over you can analyze your dive profile in the memory/logbook mode. Data is graphically displayed, including your dive time, depth, tank pressure, and temperature. Later you can also upload the data to your laptop, create a new logbook, monitor your dives, and even share the info with others. There are a few points to remember. If you don't remember to activate the tank transmitter before diving you would have to resurface. It can't be activated oncethe dive has begun. This shouldn't be a problem if you do your pre dive checks before diving. Also, Suunto use their new Dive 2.0 Dive Manager Software and a USB connection to uploadthe dive data to a computer. This is only PC compatible and is not available for the Mac (at the time of writing), which can be a real negative if you are a Mac user. Technical Features:
The author of this article is Tom Slater. For answers to all your questions about the Suunto D9 dive computer and many other dive topics, take a look at www.dive-101.com.
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