1. Dive Computers

2. Main Points Function Benefits Types Information displayed Features
Computer diving guidelines
Underwater timers

3. Objectives Describe the function of your dive computer.
Discuss the benefits of using a dive computer and identify the primary benefit.
Compare 2 types of computers.
List the items of information that a computer might display.
Discuss some features of dive computers.
Identify where to find information about guidelines for diving with a computer.
Compare an Underwater timer and a dive computer.

4. Function
Provide an accurate measure of your decompression status/N2 loading
Tables = square profiles
Computers = multi-level diving

5. Benefits
Primary Benefit
Extended time underwater
Accurate
Depth
Time

6. Types Tables based Tissue based
Continuously compares time and depth to the mathematical model of established dive tables
Still provides for multi-level diving
Tissue based
Calculates N absorption in a number of theoretical body tissues
Display a warning if N2 level in a tissue approaches or exceeds programmed limits.

7. Information Current depth Maximum depth Elapsed time
Time depth
Cylinder gas pressure
Time remaining based on gas supply
Surface interval
H20 Temperature
Ascent rate
Dive log
Dive number
Dive profile
Time to fly
Time to de-saturation
Scrolling for time/depth
Ceiling for stops on ascent
Time for stops on ascent
Total ascent time
Battery level
Dive planning
Mandatory decompression planning
Lock out features if maximums exceeded

8. Styles
Console versus Wrist mount
Air Integrated
Hoseless
Multi gas

9. Console versus Wrist mount
Wrist Mounted

10. Air Integrated Monitors cylinder pressure
May monitor time remaining based on air supply
May have Quick Disconnect feature

11. Hoseless Air Integrated
Transmitter mounts on regulator first stage
Receiver worn remotely

12. Computer Diving Guidelines
See document in ilearn

13. Digital Dive Timer Accurately monitors May monitor ascent rate
Depth
May monitor ascent rate
May have log mode
Does not monitor decompression status
Does not provide dive planning option
May surface Interval

14. Main Points Function Benefits Types Information displayed Features
Computer diving guidelines
Underwater timers

15. Objectives Describe the function of your dive computer.
Discuss the benefits of using a dive computer and identify the primary benefit.
Compare 2 types of computers.
List the items of information that a computer might display.
Discuss some features of dive computers.
Identify where to find information about guidelines for diving with a computer.
Compare an Underwater timer and a dive computer.

16. Summary Computers provide a great deal of extremely
accurate and useful information. However
they can’t monitor your body and don’t know
if you are tired, cold, dehydrated, out of
shape or experiencing any of the factors that
increase your predisposition to DCS. When
planning and executing our dives, it is
important you combine the information from
your computer with good judgment.