Aqua Lung i450T Owner's Manual

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i450T

Dive Computer Owner's Manual

Doc. 12-7834-r04 (2/16/16)

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Page 2: Notices
The program within the i450T 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 i450T dive computer model is based upon the latest research and experiments in decompression theory.
Page 3: Warnings
• If you exceed certain limits, the i450T 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 occurred.
Page 4: Table Of Contents
LOW BATTERY DURING A DIVE DELAYED VIOLATION 2 (DV 2) AUDIBLE ALARM DELAYED VIOLATION 3 (DV 3) PROXIMITY OF THE TRANSMITTERS AND i450T 24 VIOLATION GAUGE MODE DURING A DIVE VIOLATION GAUGE MODE ON THE SURFACE DIVE SURFACE MODE HIGH PO...
Page 5 COMPASS MAIN MENU STAND MODE (STANDARD MODE) REF MODE (REFERENCE MODE) Set Reference Menu CALIBRATE SET DECLIN (DECLINATION) TIMEOUT EARMARK ALARMS ASC (Ascent) Alarm Depth Alarm REFERENCE PC INTERFACE CARE AND CLEANING © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 7: Basics
Watch, Dive, Gauge, and Free Mode. Though the i450T is easy to use, you will get the most out of your new i450T if you take some time to familiarize yourself with its displays and operation.
Page 8: Display Icons
Low Battery Depth ID (units) Value is Pressure Degrees (temp. or heading) Alternate Time Zone Fraction of Oxygen Run Timer Value is Seconds Partial Pressure of Oxygen Dive Time or Dive # © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 9: Buttons
GETTING STARTED BUTTONS The i450T utilizes 4 control buttons called the MODE, SELECT, ADV. (Advance) and, LIGHT buttons. They allow you to select mode options and access specific information. They are also used to enter settings, activate the backlight, and acknowledge the audible alarm.
Page 10: Button Functions
• to exit a menu directly to the Main screen • to switch between Compass Mode and the active diving mode, while on the Main screen • to exit or step back to the previous screen or setting © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 11 GETTING STARTED ACTION BUTTON FUNCTION • to increase a setting value at a faster rate • to reset backlight timer © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 13: Watch Main Screen
WATCH MAIN SCREEN The Watch Main screen is the default screen of the i450T. The i450T allows you to choose between displaying one or two time zones. This is useful when wearing the i450T as your primary timepiece while travelling.
Page 14: Watch Main Menu
Main Menu when available. All Main Menu screens and options will be discussed in the order they appear in the menu below. MAIN MENU CDT SETUP CHRONO DAILY AL TIME MENU to Select Exit Menu an option © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 15: Cdt (Countdown Timer) Setup
Upon descending to 5 FT/1.5 M (i.e., entry into a Dive, Gauge, or Free Mode dive), operation will be terminated and the counter will reset to 0:00:00.00 (hr:min:sec.centisecond). © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 16: Daily Al (Alarm)
(■) up to move (■) down 1. Date Form (Format) Choose your preferred date format. to move to select (■) up M.D = Month.Day D.M = Day.Month to move (■) down © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 17: Date Form (Format)
4. Date Set the year, mnth (month), and day in order. The corresponding digit will flash, allowing it to be set. to decrease to save value year, month; flashing to increase value © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 18: Alt Time
NOTE: If the Alt Time was set previously to OFF (00 hour difference), NO will be the only available option on the Show Dual screen. to move to select (■) up to move (■) down © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 20: Dtr (Dive Time Remaining)
DIVE FEATURES DTR (DIVE TIME REMAINING) The i450T constantly monitors No Decompression status and O2 Accumulation, and will display whichever Time is the least amount available as DTR on the No Decompression Dive Main screen. The Time being displayed will be identified by the NO DEC (no decompression) or O2 MIN icons.
Page 21: Asc Bar Graph
DS (DEEP STOP) When the DS selection is set ON, it will trigger after descending deeper than 80 ft (24 m). The i450T then calcu- lates (continually updating) a Stop Depth equal to ½ the Max Depth.
Page 22: Ss (Safety Stop)
• The battery icon appears solid upon entry into Surface Mode. Alarm Level • The i450T functions continue but the backlight is disabled. • The Battery icon appears flashing. 5 seconds after entering Surface Mode the i450T will shut down. © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 23: Audible Alarm
• FREE - DA1 to DA3 Alarms. Events that emit (2) beeps >> each sound for 1 sec with ½ sec silence between beeps: • FREE - RTI Alarm. © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 24: Proximity Of The Transmitters And I450T
Link Interruption Underwater During a dive, you may at times move the i450T out of the signal pattern of the TMT, resulting in a temporary loss of the link signal. The link will be restored within 4 seconds after the i450T is moved back into its correct position.
Page 26: On The Surface Before A Dive
# ALT 2 The ALT 2 screen displays current elevation readings, time of day, and temperature. Watch Default Time elevation temperature (EL2 - EL7, blank if sea level) © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 27: Dive Surf Main Menu
DIVE SURF MAIN MENU To view i450T logs, change settings, or switch modes you must navigate through the Surf Main Menu. Enter the menu by pressing the MODE button. Some screens simply display data. While other screens are lead-ins to sub menus and settings.
Page 28: Fly/Desat
Main Menu Conservative depth turned OFF No Decompression or O2 MIN current PO Alarm to increase setpoint, blank if current depth FO2 is Air setpoint © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 29: Log
SEA (or EL 2 - EL7) NOTE: Log Data 4 only displays for nitrox dives; it is bypassed if the dive was an air dive. © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 30: Set Gas
OFF for Gas 2 and 3. Settings revert to the defaults when 24 hours elapse without conducting a dive. If you set a nitrox mix value for any gas the PO alarm value will default to 1.40 until changed. Additionally, the i450T allows for each gas (1 - 3) to have individual PO alarm settings.
Page 31: Set Al (Alarms)
(■) up option depth setting flashing OFF or ON returns to Set Alarms Menu to move to increase (■) down depth DEPTH AL TRIGGERED flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 32: Edt Al (Elapsed Dive Time Alarm)
(■) up option segments setting current N2 Alarm setting flashing OFF or ON to move to increase returns to (■) down segments Set Alarms Menu N2 AL TRIGGERED flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 33: Dtr Al (Dive Time Remaining Alarm)
(■) up option value setting OFF or ON returns to Set Alarms Menu flashing current DTR Alarm to move to increase setting (■) down value TURN AL TRIGGERED flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 34: Press Al (Pressure Alarm)
1. H2O TYPE (Water Type) The H2O Type feature allows you to set SALT or FRSH (fresh) water environment for accurate depth calculations. to move to select (■) up to move (■) down © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 35: H2O Activ (Water Activation)
(■) up to move (■) down 4. DEEP STOP The Deep Stop feature can be set ON or OFF. to move to select (■) up to move (■) down © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 36: Safe Stop (Safety Stop)
(■) up option value setting OFF or ON returns to Set Util Menu current flashing to increase to move setting value (■) down © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 37: Sampling (Sample Rate)
9. TMT MENU (TRANSMITTER MENU) The i450T can use up to 3 transmitters to monitor gas supplies. The TMT Menu allows for the pro- gramming of the wrist unit to receive the signals from selected Aqua Lung transmitters. See the Dive Mode Features section (p.
Page 38: Op Mode (Operation Mode)
Op Mode allows you to choose between DIVE (standard recreational dive), GAUGE, and FREE (free diving) modes of operation. NOTE: Once a dive is conducted in GAUGE Mode, the i450T shall operate with limited functions with- out any decompression or oxygen monitoring functions. A 24 hour surface interval shall be required for the unit to operate as a full function DC in DIVE or in FREE Mode.
Page 39: History
This screen checks battery and connection status for the wrist module and transmittters. It will show the battery status of the i450T wrist module first. Then it will automatically cycle through any active transmitters before return- ing to the Main Menu.
Page 41: Initiating A Dive
DIVE OPERATION INITIATING A DIVE With the i450T in Dive Mode, a dive will commence upon descending to 5 ft (1.5 m) for at least 5 seconds. Below is a diagram to help you navigate Dive Mode functions. to record data earmark...
Page 42: Dive Alt 1
This screen simply tells you the max depth, current time of day, and ambient temperature. DIVE ALT 2 The ALT 2 screen displays information pertaining to nitrox; it is bypassed if the i450T is set for air. saturation 0 - 100...
Page 43: Deep Stop Main
Upon ascending to 3 ft (0.9 m) the i450T transitions to Dive Surface mode. NOTE: The i450T requires a 10 minute surface interval to record a subsequent dive as a separate dive in the Log. Otherwise, the dives will be combined and recorded as a single dive in the i450T memory. residual...
Page 44: Gas/Transmitter Switches
• If you exceed certain limits, the i450T 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 occurred.
Page 45 1.6, then a warning not to switch will display. The i450T will maintain the current gas without switching. The diver may overide the i450T and force the gas switch by pressing the SELECT button during the DO NOT SWITCH TO message.
Page 46: Complications
DIVE OPERATION COMPLICATIONS The preceding information has described standard dive operations. Your new i450T is also designed to help you to the surface in less than ideal situations. The following is a description of these situations. Take some time to familiarize yourself with these operations before diving your i450T.
Page 47: Conditional Violation (Cv)
• If the DV1 status is ignored, the i450T will enter DV1 Surface mode for 5 minutes upon surfacing from the dive. Down arrows and Deco Stop depth/time will alternate with SURF TIME. After 5 minutes on the surface in DV1 mode, the unit will enter VGM (Violation Gauge Mode).
Page 48: Delayed Violation 2 (Dv 2)
* The maximum functional depth (Dive/Free = 330 ft / 100 m, Gauge 400 ft/120 m) is the depth at which the i450T can properly perform calcu- lations or provide accurate display information.
Page 49: Violation Gauge Mode On The Surface
Additionally, the UP message and up arrows will flash continually until PO decreases below the alarm set point. DURING AUDIBLE ALARM AFTER AUDIBLE ALARM flashing alternating flashing with gas pressure © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 50: High O2 Sat (Oxygen Saturation)
When O2 SAT reaches the Warning Level, the audible alarm sounds and the O2 SAT value will flash in the middle of the screen. When the audible alarm is silenced, the standard Deco Dive screen is restored. flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 51: Alarm During Deco
Deco Stop depth and time until 5 minutes elapse. Then operation will revert to Violation Gauge Mode. SURFACE, SURFACE < 5 MIN, 100% O2 SAT DECO & 100% O2 SAT alternating with missed Deco Stop flashing depth/time © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 53: On The Surface Before A Dive
GAUGE SURF MAIN MENU To view i450T logs, change settings, or switch modes you must navigate through the Surf Main Menu. Enter the menu by pressing the MODE button. Some screens simply display data. While other screens are lead-ins to sub menus and settings.
Page 54: Run Timer
INITIATING A DIVE With the i450T in Gauge Mode, a dive will commence upon descending to 5 ft (1.5 m) for longer than 5 seconds. Below is a diagram to help you navigate Gauge Dive Mode functions. The dive will end and revert to Surface Mode upon ascent to 3 ft (0.9 m) of depth for at least 1 second.
Page 55: Gauge Dive Main
The max depth on the Alt screen will also be represented by dashes. * The maximum functional depth (Dive/Free = 330 ft / 100 m, Gauge 400 ft/120 m) is the depth at which the i450T can properly perform calcu- lations or provide accurate display information.
Page 57: Free Dive Mode Details
• The mathematical models currently used in the i450T are based on no decompression/decompression multilevel repetitive dive schedules. • These algorithms do not take into account the physiological changes associated with the high pressures that competitive type free diving can expose a diver to.
Page 58: On The Surface Before A Dive
FREE SURF MAIN MENU To view i450T Free Dive Logs, change settings, or switch modes you must navigate through the Surf Main Menu. Enter the menu by pressing the MODE button. Some screens simply display data while other screens are lead- ins to sub menus and settings.
Page 59: Timer
FREE MODE TIMER The i450T Free Mode has both a programmable CDT (Countdown) and Run timer. The diver may choose to use either of the timers or simply turn them off. NOTE: Selecting a timer only makes it available on the Main screen. While on the Main screen, the SELECT button must be used to start and stop the selected timer.
Page 60: Day Log
Day History Log/Hist Menu Data 4 max depth of average max longest dive depth average elapsed dive longest dive time time if > 9:59 then 9:- - displays © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 61: Full Hist (History)
Full Hist (History) The Full History looks and functions similar to the Day History but records information for all free dives ever made with your i450T. SET ALARMS Within this menu you can customize the following seven different alarm settings.
Page 62: Srt (Surface Recovery Time) Alarm
(■) up option value min/sec OFF or ON returns to Set Alarms Menu increase to move 0:10-9:59, value (■) down min:sec FREE DIVE MAIN (during RTI Alarm) flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 63: Rdi (Repeating Depth Interval) Alarm
(■) up option value OFF or ON returns to 31-330 ft Set Alarms Menu (10-100 m) increase to move value (■) down FREE DIVE MAIN (during DA 1 (2,3) Alarm) flashing flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 64: Set Util (Utility)
Surface Mode chapter for further details. Features unique to Free Mode described below. 1. DSD (Dive Start Depth) DSD allows you to choose what depth the i450T initiates a dive. You may choose 2, 4, or 6 ft (0.6, 1.2, 1.8 m).
Page 65: Initiating A Dive
INITIATING A DIVE With the i450T in Free Mode, a dive will commence upon descending to the programmed DSD (Dive Start Depth, p.65) for longer than 5 seconds. Below is a diagram to help you navigate Free Dive Mode functions.
Page 66: High Nitrogen Alarms
After 1 minute on the surface, the graphic VIOL alternates with FREE MODE and dive computer operation locks into Free Mode for 24 hours. Access to Watch Mode and Compass Mode will be as usual. N2 ALARM DECO ENTRY VIOLATION flashing flashing flashing © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 68: Compass Display Icons
COMPASS MODE COMPASS DISPLAY ICONS Reference Mode Turn Left Diver's Direction (lubber line) Turn Right Tilt (≥ 20° off level) Heading Degrees Dynamic North or Heading Set © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 69: Overview
SELECT button for at least 2 seconds. • The i450T reverts back to the previous operation mode after 1 minute unless the Compass Mode is reset by pressing any of the buttons. See the Timeout section at the end of this chapter for further details.
Page 70: Ref Mode (Reference Mode)
SET HEADING LEAD-IN SET HEADING to Set to save Heading new (current) flashing Screen solid course heading Heading or Reverse icon current heading (flashing) previous heading (when Set Reference was accessed) © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 71: Calibrate
You may need to calibrate the compass from time to time to compensate for any magnetic interference (new batteries, new dive location, or other surrounding changes). Sometimes the i450T will prompt for a calibration, after a battery change for example. The Calibration selection in the Compass Main Menu allows you to manually initiate a calibration.
Page 72: Timeout
By pressing the Mode button during a dive you can manually record a data snapshot which can later be accessed using the i450T's download feature. The message "EARMARK APPLIED" will be displayed for 3 seconds as con- firmation after an earmark is made.
Page 74: Pc Interface
The USB Driver required for the interface system is downloadable from www.aqualung.com. It must be installed on your PC prior to use of the Interface System. The i450T is configured with a Data Port located on the side that enables it to be connected to a PC USB port us- ing the special Interface Cable.
Page 75: Care And Cleaning
Instrument Lens Protector. Small scratches will naturally disappear underwater. • Soak and rinse the i450T in fresh water at the end of each day of diving, and check to ensure that the areas around the Low Pressure (Depth) Sensor, PC Interface Data Port, and buttons are free of debris or obstructions.
Page 76: Battery Replacement
Inspect the buttons, lens, and housing to ensure they are not cracked or damaged. If there is any sign of moisture in the i450T, DO NOT attempt to use it for diving until it receives proper service by the Aqua Lung factory or an authorized regional distributor.
Page 77 • Carefully position the battery cover over the battery compartment. Use the i450T logo as a guide for top/bottom. • While ensuring that the cover and back of the case are properly aligned, firmly press them evenly and complete- ly together.
Page 78: Altitude Sensing And Adjustment
• Activate the unit and ensure that the LCD is clear and sharp in contrast. If any portions are missing or appear dim, or if a low battery condition is indicated, return the i450T to an authorized Aqua Lung dealer for evaluation before use.
Page 80: No Deco Time Limits
0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:05 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:05 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03 © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 81: Oxygen Exposure Limits
OXYGEN EXPOSURE LIMITS (from NOAA Diving Manual) MAX DURATION MAX TOTAL DURATION SINGLE EXPOSURE 24 HOUR DAY (ATA) (MIN) (MIN) 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.60 © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 82: Specifications
• Out of the water - between 20 °F and 140 °F (-6.6 and 60 °C). • In the water - between 28 °F and 95 °F (-2.2 and 35 °C). © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 83 9:59 to 0:00 min:sec 1 second • Violation Countdown Timer 23:50 to 0:00 hr:min 1 minute Max Functional Depth: Limit: • DIVE/FREE/GAUGE 330 FT (100 M) • Watch Housing 400 FT (120 M) © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 84 • Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician. CAUTION: Changes or modification to this unit not expressly approved by Aqua Lung International could void the user's authority to operate the equipment.
Page 85: Abbreviations/Terms
HIST = History IMP = Imperial (measure) LAST = Previous (dive) LO = Low (battery) M = Meters (depth) MET = Metric MFD = Maximum Functional Depth (equipment limits) MIN = Minutes (time) © Aqua Lung International, Inc. (2015) Doc. 12-7834-r04 (2/16/16)
Page 86 www.aqualung.com...

Aqua Lung i450T Owner's Manual

Getting Started

Watch Mode

Dive Features

Dive Surface Mode

Dive Operation

Gauge Mode

Free Mode

Compass Mode

Reference

Technical Data

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