Introducing the erdp The Next Generation Dive Planner [NOTE TO PRESENTER: Use this presentation to introduce the erdp to new divers, experienced divers and dive professionals.] Introducing the erdp - The Next Generation Dive Planner 1
We ll answer... What is the erdp? What can the erdp do? How do you use the erdp? How do you integrate the erdp into PADI programs? We ll answer the following questions: What is the erdp? We ll discuss what it is and what it s not. What can the erdp do? We ll identify all the erdp features and discuss how it functions. How do you use the erdp? We ll show you a few examples and you ll see how easy it is to use. How do you integrate the erdp into PADI programs? We ll explain how you can start teaching student divers to use the erdp in your PADI courses. 2
What is the erdp? An electronic dive table Another version of the world s most popular dive table, the Recreational Dive Planner (RDP) Provides the same maximum dive times, surface interval information and pressure groups as the RDP table version continued... What is the erdp? The erdp is an electronic dive table. It s an easy to use version of the world s most popular dive table, the Recreational Dive Planner (RDP). Since the RDP was introduced in 1988, both the table and The Wheel versions, have been used by millions of recreational divers. The erdp is designed to give you the same maximum dive times, surface interval information and pressure groups as the RDP table version. 3
What is the erdp? Allows planning of single and repetitive dives Not a computer, but a specialized calculator Not submersible, but resists a little moisture What is the erdp? The erdp also allows you to enter dive times, dive depths and surface intervals so you can plan single and repetitive dives, just as you would with the RDP table. We ll review the erdp s three modes - Dive Planning, Minimum Surface Interval and Maximum Depth - later in this presentation. The erdp is not a computer, but a specialized calculator that makes that makes planning and tracking dives simpler. Just as using a calculator to balance your checkbook is easier than adding and subtracting by hand, calculating dive profiles using the erdp is quicker than figuring out profiles using the RDP table. Although it resists moisture, the erdp is not submersible. Just like a standard calculator, the erdp is not waterproof. It s designed for use on the surface and can t be taken underwater. Keep in mind that you can take your RDP table in the water. It s a good backup to have your RDP table handy in your BCD pocket if you need to reference it, and to have your erdp waiting on the surface to calculate your dives during a surface interval or when logging dives in your log book. 4
What is the erdp? erdp components: Attached general Rules for Use Slate Instructions for Use booklet continued... What is the erdp? erdp components: Attached general Rules for Use Slate. The RDP table and The Wheel have the general rules for use printed on them. Those same rules and guidelines apply to the erdp.the rules are printed on a separate slate that is attached by a simple ring. You ll see how the erdp actually prompts the user to refer to specific rules when certain dive planning circumstances occur. It s important to keep the erdp and the slate together. Instructions For Use Booklet that includes both metric and imperial information and examples. 5
What is the erdp? erdp components: Common user-replaceable battery Metric/imperial switch inside battery compartment Battery compartment What is the erdp? erdp components: Common user-replaceable battery located in the back of the calculator. The erdp uses a common 3.0 volt #2032 calculator battery that s user-replaceable. The battery has an estimated life of one year with an average use of 10 minutes per day. When the display dims, the battery should be replaced. Before using a new erdp, you must remove the plastic protecting the battery. Metric/Imperial switch is in the rim of the battery compartment. The default for the erdp is metric. To change it to imperial, you must open the battery compartment and flip the switch to imperial. Once set, you probably won t need to switch from one measuring system to the other. If you do, it s easily accomplished using a switch inside the battery compartment. 6
What can the erdp do? Main Display Metric/Imperial Mode Mode/Reset Delete Back Enter and On/Off Alpha/Numeric Keys Yes/No Keys What can the erdp do? Let s take quick look at the erdp s function keys and display. Main Display Displays alpha/numeric information. Metric/Imperial Mode Shows whether the erdp is being used in metric (M) or imperial (FT) mode. Enter Press the Enter key after entering alpha or numeric data. It is also the on/off key. Pressing and holding the Enter Key for two seconds switches the erdp on or off. Back - Takes you back to the previous step, though this is not possible in all modes Delete - Deletes digits/letters before pressing Enter key. Mode/Reset - Used to select the erdp Dive Planning, Surface Interval and Maximum Depth Modes. Press and hold for 2 seconds to reset the erdp. Alpha/Numeric - Used to enter numbers and letters. Yes/No - Used to answer Yes/No questions. 7
What can the erdp do? Auto shut off Three modes Dive Planning Minimum Surface Interval Maximum Depth Planning What can the erdp do? Auto shut off If you leave the erdp on for more than five minutes without entering information, it will shut itself off to conserve the battery. There are three modes that correspond to the erdp functions. We ll look at each of these in detail next: Dive Planning Minimum Surface Interval Maximum Depth Planning 8
What can the erdp do? Dive Planning mode First dive Yes or No Enter depth to find no decompression limit (NDL) Enter time to find Pressure Group (PG) Additional dives: Before surface interval, enter PG after previous dive After a surface interval, enter PG after surface interval continued... What can the erdp do? Use the Dive Planning mode to not only plan, but also calculate your pressure group after a dive or after a surface interval After entering the Dive Planning mode, the erdp will ask if this is your first dive of the day. Answer Yes and you can find your NDL and PG after the dive. Enter a depth and you ll get your NDL Go on to enter a time and you ll get your pressure group for that depth and time. You may also enter the planning process at other points: Before a surface interval, you enter your PG after a previous dive After a surface interval, you enter your PG after your surface interval This features means that you can continue dive planning at any point, as long as you know your pressure group. You don t have to always start from the beginning by re-entering data from previous dives. 9
What can the erdp do? Dive Planning mode New PG displayed anytime you enter an actual bottom time (ABT) or surface interval (SI) Dive Planning mode One of the great advantages of the erdp is that it eliminates the need for you to perform the calculation of adding Residual Nitrogen Time (RNT) to Actual Bottom Time (ABT) to get Total Bottom Time (TBT) in order to find your PG after a repetitive dive. This eliminates the most common source of error when using the RDP table. After you enter your depth and time for a repetitive dive, the erdp displays your PG after the dive. This is also true when starting with a PG, then entering a surface interval you get your new PG. 10
What can the erdp do? Minimum Surface Interval mode Enter depths and times for two dives and get required minimum surface interval Enter the PG after previous dive, then enter depth and time for next dive and get required minimum surface interval Minimum Surface Interval mode The erdp allows you to plan two dives and find the required minimum surface interval. You enter the depths and times for both dives and the erdp displays the required minimum surface interval. You can also find minimum surface interval after any dive when planning your next dive. First enter the PG after a previous dive. Next enter the depth and time for the next dive and the erdp displays the required minimum surface interval. 11
What can the erdp do? Maximum Depth mode Plan first dive enter desired dive time, get maximum allowed depth After planning a dive, enter desired time for next dive get the maximum depth for that time Enter PG after surface interval, then desired time get maximum depth for that time What else can the erdp do? Maximum Depth mode The erdp allows you to plan your first dive by entering a desired dive time. It will give you the maximum allowed depth based on that time. After planning a dive, you can enter a desired time for the next dive and find the maximum depth you can dive to for that time. If you know your PG after a surface interval, you can enter a desired dive time and the erdp displays the maximum depth you can dive to for that time. 12
What can the erdp do? Warnings, prompts and alarms When a value exceeds a limit... Warning appears Exceeds Limits Alarm (three short beeps) sounds Planning stops until limit is adjusted Prompts to refer to printed rules What can the erdp do? The erdp has built in safety warnings, prompts and alarms During use, the erdp warns you when a value exceeds a limit. Warnings and prompts are accompanied by an alarm (three short beeps). For example, when you enter a time that exceeds the NDL, the erdp displays Exceeds Limits and emits an alarm. The erdp will not allow you to enter a time that exceeds the NDL. After displaying the Exceeds Limits warning, it shows the NDL once more and prompts you to enter your dive time again. When an RDP/eRDP rule applies, you are prompted to refer to rules printed on the accompanying Rules For Use Slate. When using the RDP table, you have to remember when to apply the rules. The erdp conveniently prompts you to refer to the rules when they apply. For example, when you enter a depth greater than 40 metres/130 feet, the erdp displays Exceeds Limits See Rule 10 and emits an audio alarm. The erdp will not allow you to plan dives that exceed these depths. The erdp reminds you that a safety stop for 3 minutes is required any time the pressure group of the profile you ve entered comes within 3 pressure groups of a nodecompression limit, and for any dive to a depth of 30 metres/100 feet or greater. When your PG after a dive is W,X,Y or Z, the erdp displays WXYZ Rule See Rule 6 and emits an audible alarm. 13
How do you use the erdp? Lets go through a few dive profiles How do you use the erdp? Lets take the erdp for a few test dives. [NOTE TO PRESENTER: Either launch the erdp simulator to work through sample dive profiles or use an actual erdp. Have divers follow along on their personal erdps.] Demonstrate: Finding NDL. Exceeding NDL. Enter a dive depth to display NDL. Then enter a dive time that exceeds the NDL to display the Exceeds Limits warning. Finding PG after a dive. Exceeding recreational depth. Enter a dive depth that exceeds 40 metres/130 feet to display the Exceeds Limits warning. Plan a 2-dive profile starting with the first dive. Plan a 2-dive profile by entering the PG after the first dive. Safety Stop prompt. Enter a dive depth of 30 meters/100 feet to display the Safety Stop 3 min warning. Calculate the maximum depth for a first dive. Calculate the maximum depth for a repetitive dive, entering the PG before the dive. 14
How do you integrate the erdp into PADI programs? Open Water Diver Course options: Teach RDP table use first to establish dive table purpose and function, then introduce erdp as easy alternative Teach RDP table and erdp use side-byside Teach erdp first and introduce RDP table as excellent back up continued... How do you integrate the erdp into PADI programs? Starting with the Open Water Diver course, you have several options. You may use the erdp in any PADI program in place of the RDP table, however, it s a good idea to have student divers learn to use both the table (or Wheel) and erdp. You can teach the table first to ensure that student divers understand the purpose and basic function of a dive table, then introduce the erdp as an easy-to-use alternative. This makes the erdp a great add on sale for any course. You may also choose to teach the RDP table and erdp side-by-side. Or, you can teach the erdp first and introduce the table as an excellent backup. This reinforces the need to have a backup for dive planning which allows you to also position the erdp as alternative backup when diving with a dive computer. 15
How do you integrate the erdp into PADI programs? Open Water Diver Course: Student divers may use erdp when taking Quiz 4 and the Final Exam Open Water Diver Course: Allow students to use the erdp when taking Quiz 4 and the Final Exam. 16
How do you integrate the erdp into PADI programs? Divemaster Course: Candidates need to be familiar with the RDP table, The Wheel and erdp Candidates may use erdp during Divemaster Exam Decompression Theory and the Recreational Dive Planner How do you integrate the erdp into the PADI Divemaster course? At this leadership level of training, divemaster candidates need to be familiar with, and proficient at using, all versions of the RDP - table, The Wheel and erdp. You should introduce the erdp to divemaster candidates who are unfamiliar with it, the same way that you currently introduce The Wheel or RDP table to candidates who are unfamiliar with either version. Divemaster candidates may use the erdp when answering RDP table questions on the Divemaster Exam Decompression Theory and the Recreational Dive Planner. 17
How do you integrate the erdp into PADI programs? Instructor Development Course and Instructor Examination: Candidates need to know how to use and teach the RDP table, The Wheel and erdp Candidates may use erdp during use the IE Recreational Dive Planner theory exam How is the erdp integrated into PADI Instructor-level training? Similar to the approach for divemaster training, PADI Instructor candidates need to know how to use all three version of the RDP. In addition, they need to know how to teach all three versions. During an IDC, a PADI Course Director should integrate erdp use into the presentation How to Teach the Recreational Dive Planner and help candidates become comfortable teaching the erdp by assigning Knowledge Development presentations. Instructor candidates may use the erdp during the IE Recreational Dive Planner theory exam. 18
How do you integrate the erdp into PADI programs? Do not use erdp during PADI Enriched Air Diver course Divers must calculate residual nitrogen time (RNT) only possible with RDP table It is not possible to integrate erdp use into the PADI Enriched Air Diver course because divers are required to calculate residual nitrogen time (RNT). This is not possible using the erdp or The Wheel. Enriched Air Diver course students should continue to learn how to use the air RDP table in conjunction with the DSAT Equivalent Air Depth Table. 19
How do you integrate the erdp into PADI programs? Use the erdp simulator How do you integrate the erdp into PADI programs? Use the simulator on your personal computer (Windows PC or Macintosh) to show divers how to use the erdp. You can project the simulator the same way that you show lesson guides. This allows divers to see details similar to the way a Giant RDP table or Giant Wheel functions. The simulator is also a great tool for reviewing dive table quiz and exam questions. You ll see how easy it is to use the simulator during our demonstration of the erdp. 20
You can now answer... What is the erdp? What can the erdp do? How do you use the erdp? How do you integrate the erdp into PADI programs? Now you can answer the following questions: What is the erdp? What can the erdp do? How do you use the erdp? How do you integrate the erdp into PADI programs? 21