Sherwood Scuba VISION Manual

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

VISION

MANUAL

Doc. 12-7808-r01 (8/26/14)

Table of Contents

Need help?

Do you have a question about the VISION and is the answer not in the manual?

Questions and answers

Summary of Contents for Sherwood Scuba VISION

Page 2: Table Of Contents
VISION MANUAL CONTENTS WARNINGS..................3 NOTICES....................4 GAS SWITCHING................30 OVERVIEW..................31 FEATURES AND FUNCTIONS............5 NORM GAS SWITCH MENU...........31 DISPLAY ICONS................6 ABBREVIATIONS/TERMS............6 GAUG OP MODE................32 OVERVIEW..................7 GAUG SURFACE MAIN AND ALTS........33 ACTIVATION.................7 GAUG MENU................33 MENU SYSTEM................7 GAUG Set Groups..............34 AUDIBLE ALARM................8 GAUG DIVE MODE..............35 PC INTERFACE................8...
Page 3: Warnings
Sherwood Scuba advises that you should not use an Vision. • If you exceed certain limits, the Vision will not be able to help you get safely back to the surface. These situations exceed tested limits and can result in loss of some functions for 24 hours after the dive in which a violation oc- curred.
Page 4: Notices
The program within the Vision simulates the absorption of inert gases into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a large range of experiences. The Vision dive computer model is based upon the latest research and experiments in decompression theory.
Page 6: Display Icons
VISION MANUAL value is Time Depth id Battery Surface Interval Conservative is On FO2 is set for Nitrox Dot Matrix value is FO2 Air Time Remaining Total Ascent Time time is Minutes Press value is PO2 Temp or Heading ABBREVIATIONS/TERMS...
Page 7: Overview
(for 3 sec, then My Info) ACTIVATION To activate the Vision, press/release any button. • The unit will enter Diagnostic Mode displaying all segments of the LCD as 8's (Fig. 1), followed by dashes ( - - ), then a countdown from 9 to 0. It checks the display and voltage to ensure that everything is within tolerance.
Page 8: Audible Alarm
• Deco Stop Depth Violation => 70 FT/21 M stop required. PC INTERFACE Interface with a PC, to allow uploading settings and downloading data, is accomplished by connecting the Vision to a PC USB Port using the special USB Interface Cable.
Page 9: Power Supply
VISION MANUAL POWER SUPPLY • Battery >> (1) 3 vdc, CR2450, Lithium. • Shelf life >> up to 5 years. • Use life >> 100 dive hours if (1) 1 hour dive per dive day up to 300 dive hours if (3) 1 hour dives per dive day.
Page 10: Operating Modes
VISION MANUAL OPERATING MODES NORM Mode >> for Air and Nitrox SCUBA activity with up to 4 Gases and Pressure from 1 tank (by hose integration). GAUG Mode >> for SCUBA activity with Pressure from 1 tank (by hose integration).
Page 12: Norm Surf Main And Alts
VISION MANUAL NORM SURF MAIN, information includes (Fig. 5, 6): > SI (hr:min) with Time (clock) and SURF icons; if no dive yet, this is time since activation. > Graphic NORM (operating mode). > Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
Page 13: Fly/Desat
VISION MANUAL FLY/DESAT FLY Time is a count down timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min). DESAT Time, also a count down timer, provides calculated time for tissue desaturation at sea level taking into consideration the Algorithm used and the Conservation Factor setting.
Page 14: Set Menu
VISION MANUAL Log Data 1 , information includes (Fig. 13): > Log (book) icon and Nx icons if they apply. > Pre dive Surface Interval (hr:min) with Time (clock) and SURF icons, - : - - if # 1 (no previous dive that period).
Page 15: History Mode
VISION MANUAL HISTORY MODE History is a summary of data recorded during all NORM and GAUG dives conducted. History 1 , information includes (Fig. 18): > Graphic TOTAL, or NO DIVES YET (if new unit). > Total dives recorded (up to 9999) with graphic DIVES.
Page 16: Set F (Fo2) Menu
VISION MANUAL FO2 50% Default - > When the Default is set OFF, FO2 values will remain set at their last settings saved until 24 hours elapse without conduct- ing a dive. > When the Default is set ON and FO2 is set for Nitrox, 10 minutes on the surface after that dive the FO2 will be dis- played as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations (79% Nitrogen), unless FO2 is set before the dive.
Page 17: Set U (Utilities) Menu
VISION MANUAL SET U (UTILITIES) MENU , information includes (Fig. 25A - C): > Graphics SEt U and MENU, with the following graphic selections with their last Set Points saved. > WET ACT ON Set Points of OFF, ON >> activation of dive mode when wet.
Page 18: Set S (Shortcut) Menu
VISION MANUAL SET S (SHORTCUT) MENU , information includes (Fig. 28): > Graphics SEt S and MENU, and the following graphic selections. One item can be selected from the following menu list. That item (referred to as a Shortcut) can then be accessed directly by pressing M (2 sec) while viewing the Surface Main.
Page 20: Wet Activation
The contacts are the metal pins of the PC Interface Data Port and the stems of the buttons. When Wet Activation is set OFF, the Vision will not enter Dive Mode unless it is first activated by push button and operating in a surface mode or it is a repetitive dive.
Page 21: Deep Stop
Fig. 34 -NO DECO MAIN (NDC is DTR) model that is the basis for multilevel diving, one of the most important advantages that Sherwood Scuba dive computers offer. O2 Time Remaining (OTR) During Nitrox operation, O2 accumulation during a dive, or 24 hour period, is displayed as a percent of O2 saturation al- lowed per dive or per day.
Page 22: Air Time Remaining (Atr)
(Fig. 38). If it decreases to 0, the Audible will sound again. The time digits and graphic will continue to flash until ATR becomes greater than 5 minutes. You should initiate a controlled Ascent while monitoring Tank Pressure. However, there is no reason to panic, the Vision has Fig. 38 - NO DECO MAIN...
Page 24: No Deco Main And Alts
VISION MANUAL NO DECO MAIN , information includes (Fig. 39 A - E) - Which information is displayed (screen A, B, C, D, or E) is determined by the SET D menu selection saved during setup on the surface prior to the dive (see page 18).
Page 25: Deep Stop (Ds)
VISION MANUAL DEEP STOP PREVIEW , information includes (Fig. 43) - > Current Depth with FT (or M) icon. > Graphic DEEP STOP with Stop icon (arrows and bar). > Stop Depth with graphic FT (or M) and countdown Time as 2:00 (min:sec).
Page 26: Decompression
VISION MANUAL DECOMPRESSION Decompression mode activates when theoretical No Decompression time and depth limits are exceeded. Upon entry into Deco, the Audible will sound during which the alarm LED and full TLBG will flash. Two Up Arrows will also flash (Fig.
Page 27: Violation Modes
TLBG will also flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ). **MOD is the Max Operating Depth at which the Vision can accurately perform calculations and display data.
Page 28: High Po2
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing. VGM turns the Vision into a digital instrument without any decompression or oxygen related calculations or displays. Fig. 55 - VGM MAIN Upon activation of VGM, the Audible will sound during which the alarm LED and full TLBG* will flash.
Page 29: High O2
VISION MANUAL HIGH O2 Warning >> at 80 to 99% (240 OTU). Alarm >> at 100% (300 OTU). When O2 reaches the Warning level; the Audible will sound during which the O2 value with graphic %O2SAT and an Up Arrow will flash (in place of DTR) until the audible is silenced (Fig. 62), then DTR will be restored. The Up Arrow will remain on solid until O2 decreases below 80%.
Page 31: Overview
VISION MANUAL OVERVIEW > Can only switch when a Dive Main screen is displayed. > Cannot switch on surface. > Cannot switch during sounding of alarms. > All NORM dives begin with Gas 1 and default to Gas 1 after 10 minutes on the surface.
Page 33: Gaug Surface Main And Alts
VISION MANUAL GAUG SURF MAIN , information includes (Fig. 69): > Surface Interval (hr:min) with Time (clock) and SURF icons; if no dive yet, this is time since activation. > Graphic GAUG (operating mode). > Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
Page 34: Gaug Set Groups
VISION MANUAL SET GROUPS Information that follows describes the selections contained in the GAUG Set Groups (A, U, T, S, D, P) that are accessed from the Set Menu. Main Menu >> Set Menu >> Set Group Menu >> Set Selection.
Page 35: Gaug Dive Mode
VISION MANUAL Upon descent to 5 FT (1.5 M) for 5 seconds, operation will enter GAUG Dive Mode. GAUG DIVE MAIN , information** includes (Fig. 78 A/B) - ** Which information is displayed on the Main and Alternates is determined by the Set D menu selection saved during setup on the surface prior to the dive.
Page 37: Components
VISION MANUAL COMPONENTS Diver’s Direction of Travel Turn Right Turn Left North OP Mode Dynamic North, or Reference OP Mode Ref Heading set Ref Reverse - - or - - Diver's basic direction Ref Heading set Compass Time remaining Diver's actual when <= 15 sec.
Page 38: Overview
VISION MANUAL OVERVIEW > S (2 sec) to access Compass OP Main from Surface or Dive Main. > S (2 sec) or no button action (2 min*) to revert to Surface or Dive Main. *During the final 15 seconds, the remaining Compass On time is displayed. If a button is pressed during that time, the 2 minute On Time will reset allowing operation to remain in Compass Mode for 2 minutes.
Page 39: Calibration
VISION MANUAL Set Reference Heading , information includes (Fig. 88) - > Current Depth with FT (or M) icon, blank on surface. > Reference Mode icon (2 bars with arrow) with graphic SET (flashing) below it. > Static Arrow icon (at 12 o'clock), diver direction of travel.
Page 40: Declination
VISION MANUAL DECLINATION Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.
Page 42: Decompression Model
NO DECOMPRESSION LIMITS (NDLS) The Vision's dive planner does not scroll past 190 feet (57 meters), or to depths at which projected dive time is less than one minute. WARNINGS: Using the Vision, just as using the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness (i.e., the bends).
Page 43: Flying After Diving
Consequently, depth reading instruments that do not compensate for the decrease in ambient pressure indicate depth readings shallower than the depth they are actually at. The Vision automatically compensates for decreased ambient pressures for Altitudes between 3,000 (915 meters) and 14,000 feet (4,270 meters). Its program contains a high altitude algorithm that reduces no decompression and oxygen exposure limits to add a larger zone of caution.
Page 44: Pc Interface
VISION MANUAL PC INTERFACE The Vision is configured with a Data Port marked DL (Fig. 100a) that enables it to be attached to a PC USB port using a custom interface cable. A USB Driver is provided as part of the Interface System.
Page 45: Care And Cleaning
Instrument Lens Protector. Small scratches will naturally disappear underwater. • Soak and rinse the Vision in fresh water at the end of each day of diving, and check to ensure that the areas around the openings leading to the Low Pressure (Depth) Sensor (Fig. 106a), PC Data Port (Fig. 106b), and Buttons are free of debris or obstructions.
Page 46: Battery Removal
• Orient the Retaining Bar across the lower portion of the Battery (as in Fig. 109) and carefully push it down into position. • Replace the Cover O-ring with a new one which must be a genuine Sherwood Scuba part* that can be purchased from an Fig.
Page 47: Reset During A Dive
If the Vision Resets (i.e.; is On, turns Off, then turns On again) for any reason during any dive, Nitrogen, O2, and ATR calcula- tions are terminated (upon turning Off). Upon turning On, the graphic ERROR and the UP Arrow icons appear solid, and Cur- rent Depth is displayed (Fig.
Page 49: Dsat Algorithm Ndl Chart
VISION MANUAL DSAT ALGORITHM >> NDLS (minutes) at ALTITUDE (Imperial) Altitude 3001 4001 5001 6001 7001 8001 9001 10001 11001 12001 13001 (feet) 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 Depth ( FT ) DSAT ALGORITHM >> NDLS (minutes) at ALTITUDE (Metric)
Page 50: Specifications
VISION MANUAL SPECIFICATIONS CAN BE USED AS • Dive Computer (Air or Nitrox) with up to 4 Gases (up to 100% O2) and 1 Tank Pressure (hose). • Digital Depth Gauge/Timer and 1 Tank Pressure (hose).. • Compass. DIVE COMPUTER PERFORMANCE •...
Page 51 1 to 15 sec 1 sec WARNING: If your Vision stops working for any reason, it is important that you have anticipated this possi- bility and are prepared for it. This is an important reason for not pushing the no decompression and oxygen exposure limits, and a critical reason to avoid entering decompression.
Page 52: Inspection/Service Record
VISION MANUAL INSPECTION / SERVICE RECORD Serial Number: Firmware Rev: Date of Purchase: Purchased From: Below to be filled in by an authorized Sherwood Scuba Dealer. Date Service Performed Dealer/Technician NOTES © 2002 DESIGN (2014) Doc. 12-7808-r01 (8/26/14)
Page 54: Dive Computer
VISION MANUAL VISION DIVE COMPUTER OPERATING MANUAL © 2002 DESIGN (2014) Doc. 12-7808-r01 (8/26/14)

Sherwood Scuba VISION Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Sherwood Scuba VISION

Summary of Contents for Sherwood Scuba VISION

Table of Contents