Wisdom 3 DC Manual DIVE COMPUTER MANUAL © 2002 Design, 2011 1 Doc. No.
Wisdom 3 DC Manual CONTENTS Full Display..................................................................................................................4 Warranty.......................................................................................................................5 Notices.........................................................................................................................5 FEATURES and DISPLAYS...........................................................................
Wisdom 3 DC Manual CONTENTS (continued) • • • • • • Set End Pressure Alarm On/Off......................................................................25 Set End Pressure Alarm Value........................................................................25 Set Reserve Time Alarm On/Off......................................................................25 Set Reserve Time Alarm Value........................................................................26 Set Deco Alarm On/Off...........................
Wisdom 3 DC Manual FULL DISPLAY 6 2B CN D EC O 2A S MAXIMUM 5 METERS FEET GAUGE AIR DIVE TIME-STOP 7 DESAT SURFACE NITROX 8 TOTAL ASCENT O2 N2 METERSFEET 1B SAFE MINUTES FO2% L O W 2C PSI BAR 4 3 1A KEY: 1A. Front (Advance) button 1B. Side (Select) button 2A. Nitrogen Bar Graph 2B. Oxygen Bar Graph 2C. Variable Ascent Rate Indicator 3. Alarm LED 4. Low Battery symbol 5. Descend (Down Arrow) symbol 6. Alarm (Speaker) symbol 7. Ascend (Up Arrow) symbol 8.
Wisdom 3 DC Manual NOTICES LIMITED TWO-YEAR WARRANTY Sherwood Scuba guarantees, to the original purchaser only, that the Wisdom 3 will be free of defects in materials and/or craftsmanship under normal recreational multilevel scuba use for two years from date of purchase, provided proper care and annual service are performed as described within this owner’s guide.
Wisdom 3 DC Manual The following symbols are used throughout this manual to bring your attention to situations that require special consideration. Be sure to read and follow all instructions carefully. A WARNING is used before a procedure that will result in serious injury or death if the procedure is not followed carefully. A CAUTION is used before a maintenance technique that will result in damage to parts if that technique is not followed carefully.
Wisdom 3 DC Manual FEATURES and DISPLAYS © 2002 Design, 2011 7 Doc. No.
Wisdom 3 DC Manual INTRODUCTION Congratulations on your recent purchase of the Sherwood Wisdom 3 dive computer! Your new Wisdom 3 uses a unique and intuitive display that represents the information you need before, during, and after the dive, laid out in a logical format based on a dive profile diagram. Information is located where you would expect it to be.
Wisdom 3 DC Manual BAR GRAPHS Nitrogen Bar Graph The Nitrogen Bar Graph (Fig. 3a) represents tissue loading of nitrogen, showing your relative no decompression or decompression status. a D EC O CN As your depth and bottom time increase, segments will add to the Graph, and as you ascend to shallower depths, the Bar Graph will begin to recede, indicating that additional no decompression time is allowed for multilevel diving.
Wisdom 3 DC Manual Time and Date Displays Time displays are shown in hour:minute format (i.e., 1:09 represents 1 hour and 9 minutes, not 109 minutes!). The colon that separates hours and minutes blinks once per second when the display is indicating real time (e.g., Elapsed Dive Time), and is solid (non-blinking) when times are calculated projections (e.g., Time to Fly). b c The Main Time display is configured with the second largest digits of the LCD (Fig. 6a). A second time display (Fig.
Wisdom 3 DC Manual Situations in which the Alarm cannot be acknowledged include • Being above a required Decompression Stop Depth for more than 5 minutes. • Being in Decompression that requires a Stop Depth much greater than 60 FT (18 M). • Being on the surface for 5 minutes without completing a Decompression obligation. BACKLIGHT To activate the HydroGlo® Backlight while viewing displays in the Surface Mode, press both buttons simultaneously.
Wisdom 3 DC Manual ACTIVATION and SETUP © 2002 Design, 2011 12 Doc. No.
Wisdom 3 DC Manual ACTIVATION PUSH BUTTON (PRIMARY METHOD) A momentary press of the front (Advance) button activates the Wisdom 3. The Wisdom 3 will automatically turn OFF 2 hours after activation if no dive is made. If the water activation contacts are still bridged (the unit is wet), it automatically reactivates. TIME SURFACE NITROX PSI WATER CONTACT (BACKUP METHOD) N NOTE: This method functions only when the Wet Activation feature is set ON. Fig.
Wisdom 3 DC Manual In addition to the DATA screens, you can use also use the front (Advance) button to access the • PLAN screens (sequence of allowed dive depths/times ) • LAST screen (previous dive's data) • LOG screens • HISTORY screen • SIMULATOR Mode • SET Modes FLY/DESAT appears automatically 2 hours after a dive. Desat time also appears on DATA displays. DATA SCREENS The DATA screens are accessible during a new activation period or greater than 10 minutes after surfacing from a dive.
Wisdom 3 DC Manual GAUGE MODE DATA screen (Fig. 16) • Alpha graphic DATA • Alarm icon (if all alarms set On) • Temperature and graphic (F or C) • GAUGE graphic (indicating operating mode) • Altitude level graphic if > Sea level as LEV2 (through LEV7), or outr (out of range) While viewing the GAUGE DATA screen • Pressing Both buttons for < 2 seconds activates the Backlight. • Pressing Both buttons for => 2 seconds reverts to the TIME/WET screen.
Wisdom 3 DC Manual While viewing a PLAN screen • Pressing Both buttons for < 2 seconds activates the Backlight. • Pressing Both buttons for => 2 seconds reverts to the TIME/WET screen. • Pressing the front (Advance) button accesses the LAST screen. The unit reverts to the TIME/WET screen if neither button is pressed in 2 minutes.
Wisdom 3 DC Manual While LOG GO TO is being displayed • Pressing the side (Select) button once displays the most recent dive’s LOG Date screen. • Pressing the front (Advance) button displays that dive’s Log Screen #1. • Pressing the front (Advance) button again displays that dive’s Log Screen #2. • Pressing the front (Advance) button again displays the LOG GO TO screen. LOG DATE screen (Fig.
Wisdom 3 DC Manual HISTORY MODE HISTORY records accumulative information for up to 999 Total Dives and 2999 Dive Hours, and retains the information indefinitely, even if the Battery is removed. • 10 minutes after a Non-Violation Dive, pressing the front (Advance) button 5 times accesses HISTORY MODE (TIME > DATA > PLAN > LAST > LOG > HISTORY). HISTORY screen (Fig.
Wisdom 3 DC Manual CONT GO TO screen (Fig. 27) • Alpha graphic CONT • Alpha graphic Go to • Pressing and releasing the front (Advance) button accepts the GO TO displayed. If SIMU GO TO is selected, the Simulator is bypassed and the SET GO TO screen is accessed. If NEW GO TO or CONT GO TO is selected, the Simulator TIME/WET screen appears. SIMULATOR TIME/WET screen (Fig. 28) • Alpha graphic TIME (or WET) • Date (Month.
Wisdom 3 DC Manual PC INTERFACE MODE While the TIME/WET screen is displayed, data can be downloaded from the Wisdom 3 or settings can be uploaded to it, by connecting the Wisdom 3 to a compatible PC using a special PC Interface Cable (USB) and setting up the PC program. When the cable is connected, a PC screen will be displayed for 2 minutes, or until the data transfer is complete if less. While the PC screen is displayed, the buttons on the Wisdom 3 will be disabled.
Wisdom 3 DC Manual SET OPERATING MODE Factory set for AIR, the Wisdom 3 can also be set for NITROX or GAUGE. Appearing on the screen are (Fig. 34) • Alpha graphic MODE • Operating Mode graphic AIR or NITROX or GAUGE, flashing Pressing and releasing the side (Select) button changes the selection (AIR > NITROX > GAUGE). Pressing and releasing the front (Advance) button accepts the selection. AIR • If NITROX is selected it advances to SET PO2 ALARM VALUE.
Wisdom 3 DC Manual SET FO2 VALUE Factory set for 21%, FO2 can also be set at Values from 21 to 50% in increments of 1%. FO2 defaults to 21% after it shuts off and is reactivated and set for Nitrox Mode operation. To access SET FO2 while viewing the SET 1 GO TO screen, press/release the front (Advance) button 2 times. Appearing on the screen will be (Fig.
Wisdom 3 DC Manual SET ALL ALARMS ON/OFF Factory set ON, All Alarms can also be set OFF. When set OFF, All Alarm settings are bypassed and the Audible Alarm is turned OFF for the Alarms that could be set On/Off. Appearing on the screen will be (Fig. 38) • Alpha graphics ALM and ALL • Alarm (speaker) icon • Graphic ON (or OFF), flashing Pressing and releasing the side (Select) button toggles between ON and OFF.
Wisdom 3 DC Manual SET MAX DEPTH ALARM VALUE Factory set for 100 FT, the MAX DEPTH ALARM VALUE can also be set from 30 to 330 FT (9 to 99 M) in increments of 10 FT (3 M). After accepting ON as the setting for DEPTH ALARM ON/OFF, the SET MAX DEPTH ALARM VALUE screen appears with the set point flashing. Appearing on the screen (Fig.
Wisdom 3 DC Manual SET END PRESSURE ALARM ON/OFF Factory set ON, the END PRESSURE ALARM can also be set OFF. When set OFF, the Alarm will not sound as Tank Pressure decreases toward 0 PSI (BAR). To access SET END PRESSURE ALARM while viewing the SET 2 GO TO screen, press/release the front (Advance) button 5 times. Appearing on the screen (Fig. 44) will be • Alpha graphic END • Alarm (speaker) icon • Graphic ON or OFF, flashing Pressing and releasing the side (Select) button toggles between ON and OFF.
Wisdom 3 DC Manual Pressing Both buttons for < 2 seconds activates the Backlight. Pressing Both buttons for => 2 seconds reverts to the TIME/WET screen. The unit reverts to the TIME/WET screen if neither button is pressed in 2 minutes. SET RESERVE TIME (DTR) ALARM VALUE Factory set for 5 minutes, the RESERVE TIME ALARM VALUE can also be set from 1 to 30 minutes in increments of 1 minute.
Wisdom 3 DC Manual Pressing and releasing the side (Select) button toggles between ON and OFF. Pressing and releasing the front (Advance) button accepts the selection and advances to SET 2 GO TO. Pressing Both buttons for < 2 seconds activates the Backlight. Pressing Both buttons for => 2 seconds reverts to the TIME/WET screen. The unit reverts to the TIME/WET screen if neither button is pressed in 2 minutes.
Wisdom 3 DC Manual To access SET SAMPLING RATE while viewing the SET 3 GO TO screen, press/release the front (Advance) button 3 times. Appearing on the screen (Fig. 52) will be • Alpha graphic SAMP • Graphic TIME • Rate of :15/:30/:60 (seconds) and graphic 15/30/60 hour, flashing TIME Pressing and releasing the side (Select) button sequences through the Rates. Pressing and releasing the front (Advance) button accepts the selection and advances to SET DEEP STOP.
Wisdom 3 DC Manual SET HOUR Factory set for Hour 0, the HOUR can also be set for Hours 1 through 23. To access SET HOUR while viewing the SET 4 GO TO screen, press/release the front (Advance) button 2 times. Appearing on the screen (Fig.
Wisdom 3 DC Manual SET MONTH OF YEAR Factory set for Month 1, the MONTH can also be set for Months 2 through 12. To access SET MONTH while viewing the SET 4 GO TO screen, press/release the front (Advance) button 5 times. Appearing on the screen (Fig. 58) will be • • • • • • Alpha graphic MNTH Graphic TIME Numerical Month, mm value flashing Numerical Day .
Wisdom 3 DC Manual DIVE MODES © 2002 Design, 2011 31 Doc. No.
Wisdom 3 DC Manual DIVE TIME REMAINING (DTR) One of the most important pieces of information on Sherwood dive computers is the 'Dive Time Remaining numeric display'. The Wisdom 3 constantly monitors No Decompression status, Oxygen Accumulation, and Air Consumption Rate. a MAXIMUM DIVE TIME FEET NITROX The Dive Time Remaining (DTR) display will indicate No Deco Dive Time Remaining (NDC), Air Time Remaining (ATR), or O2 Dive Time Remaining (OTR), whichever time is the least amount available.
Wisdom 3 DC Manual Example: • You set the End Pressure Alarm for 300 PSI (20.5 BAR) • You are at a Depth of 60 FT (20 M) • Air Time Remaining decreases to 0 (minutes) • You Ascend at a maximum rate of 30 FPM (10 MPM) • You surface with 300 PSI (20.5 BAR) pressure still in your Tank OPERATIONAL DIVE MODES During Dive Modes, the Wisdom displays a Main (Default) screen of information relevant to that Dive Mode and Alternate screens that display secondary information. NO DECO MAIN DISPLAY (DEFAULT) (Fig.
Wisdom 3 DC Manual NO DECO DEEP STOP (DS) PREVIEW (Fig.
Wisdom 3 DC Manual NO DECO SAFETY STOP Upon ascending to 20 FT (6 M) on any No Decompression dive in which Depth exceeded 30 FT (9 M), 3 beep Alert is sounded and a Safety Stop screen appears with a countdown timer beginning at 3:00 (min:sec) and counting down to :00. The Safety Stop is not mandatory and there is no penalty if you surface during the countdown period.
Wisdom 3 DC Manual HIGH P02 DIVE MODE A cautionary High PO2 Mode is entered upon reaching .20 ATA less than the Maximum PO2 Alarm Set Point. CN S Upon reaching the Alarm Set Point, the Audible Alarm sounds, the Red LED flashes, and the message HIGH > PO2 scrolls at the top of the screen (each on 1/2 second). TIME NITROX O2 N2 SAFE MINUTES FEET Displayed from left to right and top to bottom are (Fig.
DECO STOP MAIN DISPLAY (Fig. 78) • Graphics DECO > STOP > XX FT (or M) (scrolls, each on for 2 seconds) • Stop Depth and graphic FEET (or METERS) • Stop Time and graphic TIME-STOP • UP Arrow on flashing, if more than 10 feet (3 meters) below the required Stop Depth. The Arrow is removed from the display when within 10 feet (3 meters) below the required Ceiling Stop Depth.
Wisdom 3 DC Manual Pressing the front (Advance) button deactivates the Audible Alarm and red LED, and activates the Backlight. Alternate displays similar to Deco can be accessed with the side (Select) button. CONDITIONAL VIOLATION ON SURFACE If you ignore a Decompression obligation and ascend to the surface, the Wisdom 3 enters Conditional Violation on Surface. Additional displays are not then available. While on the surface, the unit remains in Conditional Violation for up to 5 minutes.
Wisdom 3 DC Manual CN D EC O VIOLATION/GAUGE MODE UNDER WATER (Fig. 85) When a Decompression Stop Depth greater than 70 FT (21 M) is required, the Wisdom 3 enters Permanent Violation Mode and reverts to Violation Gauge Mode operation for the remainder of that dive and subsequent dives made within a 24 hour period. S MAXIMUM DIVE TIME FEET NITROX Once in the Violation Gauge Mode, the Wisdom 3 operates with limited functions without any nitrogen or oxygen monitoring or calculating functions.
Wisdom 3 DC Manual CARE and MAINTENANCE WARNING: DO NOT attempt to disassemble any portion of the module other than the Battery Hatch. Doing so may cause a dangerous malfunction, resulting in possible injury or death. Indication of tampering with the module will void the unit's warranty.
Wisdom 3 DC Manual CARE AND CLEANING Protect your Wisdom 3 from shock, excessive temperatures, chemical attack, and tampering. Protect the lens against scratches with an Instrument Lens Guard. Small scratches will naturally disappear underwater. a b CAUTION: Never spray aerosols of any kind on, or near, the instrument. The propellants may chemically attack the plastic.
Wisdom 3 DC Manual • Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. • If there is any sign of moisture in the module, DO NOT use the Wisdom 3 until it receives proper service by an Authorized Sherwood Scuba Dealer. WARNING: If damage or corrosion is found, return your Wisdom 3 to an Authorized Sherwood Scuba Dealer, and DO NOT attempt to use it until it has received factory prescribed service.
Wisdom 3 DC Manual REFERENCE MATERIAL © 2002 Design, 2011 43 Doc. No.
Wisdom 3 DC Manual DECOMPRESSION MODEL The Decompression Model used by the Wisdom 3 is based on the no decompression multilevel repetitive dive schedules successfully tested by Dr. Ray Rogers and Dr. Michael Powell. These tests did not include repetitive dives deeper than 90 FT (27 M) or decompression dives. Due to the present unavailability of statistical data, Wisdom 3 decompression predictions are based on U.S. Navy theory.
Wisdom 3 DC Manual WARNING: In the event that you exceed the maximum limit of per dive allowable oxygen exposure, it is recommended that you allow a surface interval of at least 2 hours before reentering the water. If you exceed the maximum limit of 24 hour period allowable oxygen exposure, you should allow a surface interval of at least 24 hours before reentering the water.
Wisdom 3 DC Manual To reduce the risk of developing decompression sickness after a single no decompression dive, current guidelines suggest waiting 12 hours prior to exposure to atmospheric pressures equivalent to 1,000 feet (330 meters) above sea level, or greater. When repetitive dives are conducted during the same day, or period of days, it is suggested that the interval be increased to a minimum of 24 hours.
Wisdom 3 DC Manual SPECIFICATIONS NO DECOMPRESSION MODEL Basis: • Modified Haldanean Algorithm • 12 tissue compartments Data Base: • Diving Science and Technology (DSAT) - Rogers/Powell Performance: • Tissue compartment halftimes (mins.
Wisdom 3 DC Manual SPECIFICATIONS (CONTINUED) DISPLAY RANGES / RESOLUTION Range: Resolution: • Dive Number 0 - 50 1 • Depth 0 - 399 FT (0 - 120 M) 1 FT (.1 M / 1 M) • Maximum Depth 399 FT (120 M) 1 FT (.1 M / 1 M) • FO2 Set Point 21 - 50 % 1% • PO2 Value 0.00 - 5.00 ATA .
Wisdom 3 DC Manual SPECIFICATIONS (CONTINUED) Activation: • Manual - push button (recommended) • Automatic - by immersion in water (as a backup, if set ON) • WET graphic indicates Wet Contacts are bridged (unit must be dried prior to transport or storage). • Automatically set for AIR Mode operation upon activation • Remains set for AIR Mode unless the Operating Mode is set for Nitrox or Gauge. • Cannot be manually activated deeper than 4 FT (1.2 M), if the Water Activation feature is set OFF.
Wisdom 3 DC Manual GLOSSARY Air Dive - A dive conducted using air (approximately 21% oxygen & 79% nitrogen) as the breathing gas. Air Time Remaining (ATR) - The air time a diver has available at that depth before an ascent must begin. Algorithm ‑ A step-by-step mathematical formula designed to accomplish a particular result (i.e. Dive Time Remaining in the Wisdom 3). Alternate Display ‑ Additional information accessible by pressing a control button.
Wisdom 3 DC Manual NO DECOMPRESSION LIMITS AT ALTITUDE (IMPERIAL) Altitude> Depth 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 4:20 2:17 1:21 0:57 0:40 0:30 0:24 0:19 0:16 0:13 0:11 0:09 0:08 0:07 0:07 0:06 4:20 2:17 1:21 0:57 0:40 0:30 0:24 0:19 0:16 0:13 0:11 0:09 0:08 0:07 0:07 0:06 3:35 1:53 1:07 0:46 0:33 0:26 0:20 0:16 0:13 0:10 0:09 0:07 0:07 0:06 0:05 0:05 3:21 1:43 1:03 0:43 0:31 0:24 0:19 0:15 0:12 0:09 0:08
Wisdom 3 DC Manual INSPECTION / SERVICE RECORD O PURCHASED FROM (DEALER) DI RESP DATE OF PURCHASE VER SERIAL NUMBER N SI LE B BELOW TO BE FILLED IN BY AN AUTHORIZED SHERWOOD SCUBA DEALER: DATE INSPECTION / SERVICE PERFORMED DEALER / TECHNICIAN SHARING THE WISDOM 3 WARNING: Never participate in sharing or swapping of a dive computer. Doing so may result in injury or death.
Wisdom 3 DC Manual NOTES © 2002 Design, 2011 53 Doc. No.
Wisdom 3 DC Manual Wisdom 3 DIVE COMPUTER MANUAL © 2002 Design, 2011 54 Doc. No.
