Page 1 ™ Air Integrated Dive Computer User Manual ™ Air Integrated Dive Computer Software v1.18 Ultrasonic software v1.11 T1, U-2 and L1 Transmitters ™ Software v3.06 April 22, 2014 Liquivision Products, Inc -1- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 2: Table Of Contents
GETTING STARTED – BEFORE DIVING YOUR LYNX ..............14 Register Your Unit/Activate Your Dive Software (Free) ................14 Unlock The Locator Feature of The LYNX (OPTIONAL, Free, BETA Software) ........14 Setup Time/Date & Battery Type ......................... 15 Read The Manual ............................15 Familiarize Yourself With Tap-Navigation ....................
Page 3 9.7 Dark Mode (only in Gauge Mode) ..................... 54 9.8. Show Hours ............................55 9.9. Show TTS ............................55 9.10. Show MAX ............................ 56 9.11. Simulate Dive ..........................56 10. Preferences ............................56 Liquivision Products, Inc -3- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 4 10.3 Layout (only affects Gauge Mode) ....................69 11. Advanced ............................70 12. Stop Simulation ..........................70 DIVING WITH YOUR LYNX IN REC MODE ..................71 Overview ..............................71 Setting Up a Dive In Rec Mode ........................73 Settings That Will Affect Your Dive ......................74 Conservatism Settings ..........................
Page 5 Exiting the water ............................83 Last dive information ........................... 84 Altitude Compensation/Surface Pressure Adjustments ................. 84 DIVING WITH YOUR LYNX IN TEC MODE ..................86 Overview ..............................86 Setting Up a Dive In Tec Mode ........................87 Settings That Will Affect Your Dive ......................89 Gas Settings ............................
Page 6 Before You can Use the Locator Feature ....................114 Using The Locator Feature ......................... 114 For The Locator To Work, The LYNX Must Be Kept Horizontal ............115 What Your See On Your Locator Screen ....................115 Waiting for/Obtaining your First Data Packet ..................115 How To Navigate When You Get Your First Packet ................
Page 7 Basic Rules For Optimizing Battery Life in your Tank or Location Transmitter ......... 136 Detailed Rules For Optimizing Battery Life in your LYNX ................ 136 LYNX Battery Savings Mode: When Your Battery Voltage Drops Below A Critical Level ......136 Estimated LYNX Battery Life Depending On User Settings ............... 137 T1 Transmitter Battery Life ........................
Page 8: Important Notices
If they fail during your dive, they can stop providing you with critical information. You must have a plan to handle the failure of the LYNX dive computer or the T1, U-2 or L1 Transmitters during your dive. You should carry backup instruments, including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, a compass, and have access to decompression tables.
Page 9: Definitions
Tank Transmitter and a Buddy’s Tank Transmitter OR his or her own Tank Transmitter and an L1 “LYNX Group-4 Mode” refers to the LYNX used by a dive master to monitor up to five Transmitters – one on his or her own tank and up to four other Tank or Location Transmitters.
Page 10: Liquivision Limitation Of Liability
You must read the Agreement for all limitations and exclusions of Liquivision’s liability to you. Trademark Notice Liquivision, the Liquivision logo, LYNX, the LYNX logo, T1 Transmitter, the T1 Transmitter logo, U- 2 Transmitter, the U-2 Transmitter logo, L1 Transmitter, the L1 Transmitter logo, Find-Connect- Discover, Dive Enlightened and Be Omniscient are all registered and unregistered trademarks, trade names and service marks of Liquivision Products, Inc.
Page 11: Lynx Hardware Features
Buddy’s location, or the location of up to 9 other divers in your Group, as long as they are all using Liquivision T1 or U-2 transmitters and are within the transmitter signal range. You can also get a directional indication of the location of your boat, or any other landmark you have marked with a Liquivision L1 Location transmitter.
Page 12: Tank Transmitter Hardware Features
U-2 Tank Transmitter Hardware Features • Ultrasonic signal transmission with a maximum range of 100m/330ft in clear water with unobstructed line-of-sight between the LYNX computer and the U-2 transmitter • Black-anodized all-aluminum housing, threaded base for mounting in first-stage high-pressure port •...
Page 13 Tank Transmitters Serial Numbers 385 and above now transmit in 2 PSI increments. If your Lynx is running V1.07 of the Lynx firmware or an earlier version it will not be compatible with Transmitters S/N 385+, and will show half of the actual pressure For your Lynx to be compatible with all Tank Transmitters you need to update to V1.10 or above...
Page 14: Getting Started - Before Diving Your Lynx
Your LYNX comes pre-loaded with software. You will be able to interact with your unit on the surface and run dive simulations immediately. However, the software will not run underwater until you register your unit, obtain a free LYNX Unlock PIN code, and enter this code into your LYNX to activate the dive functionality of the software.
Page 15: Setup Time/Date & Battery Type
Group’s tank pressures, and will provide you with remaining Air Time information for your own tank. If you choose to unlock the Locator feature of the LYNX, you will have to enter the Locator PIN you have obtained into your LYNX computer in the Locator PIN menu.
Page 16: Getting Started - Features Of Your Lynx Unit
- We recommend heat-sealing the knots at the end of the bungee cord (pull the knot away from the LYNX casing, heat it up lightly, and form the hot plastic into a hard ball that can’t slip back through the bungee hole).
Page 17: Getting Started - Features Of Your T1 Transmitter
Ultrasonic Transducer Ring – DO NOT COVER this area! Do not stick any other stickers onto the narrow part of the T1. It could impair the transmission ability of the transmitter. Liquivision Products, Inc -17- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 18: Getting Started - Features Of Your U-2/L1 Transmitter
U-2/L1 Ultrasonic Transducer Ring Inside. DO NOT COVER this area! Do not stick any stickers on this part of your transmitter housing. It could impair the transmission ability of your unit. Liquivision Products, Inc -18- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 19: Getting Started - How To Turn On/Tap Your Lynx
For your first LYNX interactions, hold your LYNX in one hand, and use the other hand to tap it. Once you are familiar with the tapping technique, you will find it easy to tap your LYNX when it is on your wrist.
Page 20 There is also a menu timeout: - if you stay in a surface menu for more than 60 sec., the LYNX will timeout to the surface display. - if you stay in an underwater menu for more than 10 sec., the LYNX will timeout to the dive display.
Page 21 Battery Type (Steps 14-19) to fully activate your unit. 10. To enter menu mode, tap Down three/five times in quick succession. 11. Your LYNX will enter menu mode, and you will see this screen: (You may notice that the “Enter PIN” line has disappeared, since you have...
Page 22 -“White - LFP123A battery”: Tap Down three times, then Tap Left to select. -“Green – ICR16340” battery: Tap Down twice, then Tap Left to select. DISPOSABLE RECHARGEABLE ER 17335M LFP123A ICR16340 1700mAh 530mAh 650mAh Blue White Green Liquivision Products, Inc -22- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 23 18. Back in the Main menu, tap Down five times to reach “Exit” and tap Left to select it. 19. You will now be back in the main Surface Display and you should see the surface screen. Liquivision Products, Inc -23- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 24: Getting Started - Setting Up A Transmitter Pre-Dive
Buddy’s tank, and still see a pressure value appear under the “You” label on your LYNX screen during your Pre-Dive Check. Such a mix-up could be fatal. NOTE: the transmitter label has been selected such that its thickness and properties do not interfere with the vibration of the transmitter which is critical for proper acoustic operation.
Page 25: T1/U-2 Tank Transmitter Installation
(SPG). It is good diving practice to carry backup instruments on any dive. The LYNX and T1 or U-2 Transmitter are two battery powered electronic devices – if any one of the batteries dies, you will lose your tank pressure information. Having an analog SPG on hand will allow you to complete your dive safely.
Page 26: T1/U-2 Tank And L1 Location Transmitter Orientation
NOTE: If your T1 Transmitter still doesn’t fit your 1 stage, or you are unsatisfied with the fit, you may return the unused and un-dove LYNX-AI to the point of purchase for a full refund within 30 days after purchase. Please see details in the LYNX User Agreement &...
Page 27: The Biggest Shadow The T1 Or U-2 Tank Transmitter Faces: You
2. INCORRECT: T1/U-2 Transmitter is pointing towards you, it is below your shoulder and touching your body. maximizing signal shadow. For more pictures, please see Appendix Liquivision Products, Inc -27- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 28: Turning The T1/U-2 Transmitters On/Off
L1 should be unobstructed. Finally, this section only covered how to ensure optimal T1/U-2 and L1 Transmitter signal transmission. It is equally important to know how to position and use your LYNX for optimal signal reception. That information is covered in the...
Page 29: Checking Your Transmitter Pre-Dive
Tank Transmitters Serial Numbers 385 and above now transmit in 2 PSI increments. If your Lynx is running V1.07 of the Lynx firmware or an earlier version it will not be compatible with Transmitters S/N 385+, and will show half of the actual pressure .
Page 30: Getting Started - Setting Up Lynx Pre-Dive
GETTING STARTED – SETTING UP LYNX PRE-DIVE LYNX Surface Display When you turn your LYNX on by tapping Down three/five times, it will go to the Surface Display (provided you have unlocked it, set up the Time/Date and Battery Type as per the steps listed here).
Page 31: Optimizing Battery Life
Lynx Firmware v1.11 and above significantly reduce the extent to which your Lynx will drain the battery when turned off. With v1.10 or below, the Lynx is capable of draining a battery in about a week and a half, if the unit sits unused with a battery inside.
Page 32: Surface Menus
(only in v1.11 or previous firmware versions) 6.3.2. A0000 You Off 6.3.2.1.Type 6.3.2.2.Serial # 6.3.2.3.Name 6.3.2.4.Max 6.3.2.5.Mid 6.3.2.6.Low 6.3.2.7.Reserve 6.3.2.8.Battery 6.3.2.9.Copy To 6.4. Advanced Compass 7.1. Check 7.2. Calibrate Liquivision Products, Inc -32- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 33: Shut Off
Choosing this menu option will put your LYNX in Sleep Mode, which is designed to use minimum battery. The LYNX will still wake up when tapped 3/5 times. It will also still keep track of surrounding pressure so it can wake up once you enter the water.
Page 34: Lock / Unlock
LYNX will display during your dive, provided you follow your dive plan precisely. The LYNX offers a 1-gas Rec mode and a 3-Gas Tec mode. Both models utilize the proven Bühlmann model with ZH-L16C M-Values. There are differences between the two modes based on the intended type of diving.
Page 35: Mode (Rec/Tec/Gauge)
“Rec Mode”, and the default gas is “Air”. Rec Mode In Rec mode, the LYNX functions as a one-gas computer. The default mix is Air. You can set any mix from 21%-40% oxygen, including common mixes such as Air (21%), 32% nitrox or 36% nitrox.
Page 36 This model generally aligns with the PADI tables. If you have a Tank Transmitter set up on your tank, and you have turned the LYNX Air Integration feature “On”, you will be able to track your tank pressure in PSI/BAR and obtain an Air Time value.
Page 37: Tec Mode
During your dive, the LYNX will begin by displaying your No Decompression Limit (NDL). If you complete your dive within the NDL time, the LYNX will tell you to complete a safety stop for 3 minutes at 5m/15ft. During these 3 minutes, if you drop below 6.5m/21ft, the safety stop counter will turn off and reset.
Page 38: Gauge Mode
Gauge Mode In Gauge mode, the LYNX acts as a bottom timer and provides information on dive depth and time. It does not keep track of your No Decompression Limit, decompression obligations or tissue saturation. IMPORTANT NOTE ON SWITCHING TO/FROM GAUGE MODE In Gauge Mode, surface off-gassing continues when the device is above water.
Page 39: Po2 Deco
“Air” to 22%, then 23% and so on with each upward tap. The maximum value is 40%. Once you have reached your desired value, say 32%, tap Left again and the value will be set. Liquivision Products, Inc -39- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 40: Compute Ndl (Only In Rec & Tec Modes)
You can configure two types of waypoints: - Normal: where you set a target Depth and a Time spent at that depth, and your LYNX uses this information to create a dive plan...
Page 41 If you plan to dive a multi-level dive with different mixes for each level, you will need to set a “Switch” waypoint to tell your LYNX to plan a gas switch. Let’s say that after 20m for 20 mins breathing 32% nitrox, you would like to spend 10 minutes at 40m (ca. 130 ft) and would like to breathe Air there.
Page 42: Alarms
User Manual 30m (ca. 100ft), and your Descent Rate Alarm is set to the default of 30 mpm, then your LYNX will assume you spend the first minute of your dive traveling to your target depth, and only spend 19 minutes at the target depth.
Page 43: Descent Rate
However, it is important to remember that a plane cabin can lose pressure for a variety of reasons and this could be a risk factor. Liquivision Products, Inc -43- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 44: Simulate Dive
The simulator follows descent and ascent rate limits • It takes a moment to turn on, since the simulation starts at 0m / 0ft but the LYNX considers a dive to start after divers descends below 1.6m / 5.2ft •...
Page 45: Air Integration
6. Air Integration This is where you can configure all the settings pertaining to Air Integration on your LYNX – it will allow you to decide how many and what kind of transmitters you want to monitor and display on your...
Page 46   Solo (Tec): The LYNX Tec Dive Mode allows you to configure up to 3 gas mixes, so Tec-Solo Air Integration Mode allows you to configure up to 3 tanks. Your LYNX monitors the transmitter on the tank you are breathing from.
Page 47: Units
Imperial/Metric units selection you can make for all other units in the LYNX in the Preferences-Units menu. This means you can run your LYNX tank pressure in PSI, but get your depth and temperature in meters and Celsius, for example.
Page 48: Serial
(default is 1000 PSI/66 BAR) Reserve: Pressure at which tank icon turns RED in dive screen (default is 500 PSI/35 BAR) Max Pressure Mid Pressure Reached Low Pressure Reached RESERVE!!! Liquivision Products, Inc -48- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 49: Battery
User Manual 6.3.2.8. Battery It is very important that you set your transmitter to the correct battery type, so that your LYNX computer can accurately predict transmitter battery life. The following chart shows Transmitter batteries, and which ones are compatible with what device:...
Page 50: Copy To
Important! Make Sure You Set The Correct Battery Type! Your LYNX calculates and displays the remaining life of its own battery, as well as that of any Tank or Location Transmitter whose signal it is set up to receive. To get accurate battery life estimates, you must enter the battery type each device is currently using into the LYNX.
Page 51: Log Summary
● CNS finish – the same value at the end of the dive ● OTU – oxygen toxicity units acquired throughout the duration of this dive Liquivision Products, Inc -51- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 52: Depth Graph
“Log Detail” menu. 9. Display Settings This is a series of settings you can use to personalize your LYNX’s display. 9.1. Brightness The “Brightness” setting has two levels – Normal and Low (default is Normal). In clear, shallow water, with lots of sunlight, you will need normal brightness to see the display properly.
Page 53: Refresh
ALTERNATE LARGE In Rec and Tec mode, the LYNX display varies depending on whether Air Integration is “Off” or, if it is “On”, whether you are in “Solo”, “Buddy”, “Group 4” or “Group 9” mode. You can change this layout in the...
Page 54: Velocity
Display Settings” menu of both Deco Mode and Gauge Mode, Dark Mode is only available when your LYNX is running in Gauge Mode. This option enables selecting one Liquivision Products, Inc -54- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 55: Show Hours
(Nothing is displayed) (Data in dim red color) The “Blank” mode was created on the request of cave-diving instructors, who found that the LYNX’s screen shone so brightly that it would illuminate the cave during a lights-out drill. The “Blank” mode allows students to turn off the screen on their LYNX, without interrupting the unit’s functioning.
Page 56: Show Max
• The simulator follows descent and ascent rate limits • It takes a moment to turn on, since the simulation starts at 0m / 0ft but the LYNX considers a dive after divers descends below 1.6m / 5.25ft • If the time you set is too short to reach the specified depth, the simulator will just keep descending for the allotted time, and then start ascending without reaching the depth you specified •...
Page 57: Tap Sensitivity
LYNX from Sleep Mode, and the number of taps that will take you to the menus. The default setting is “3”. Some divers find that the LYNX can wake up at random due to a bumpy ride to a dive site or due to accidental impacts during a dive in a closed environment, for example.
Page 58: Status
This menu item allows you to select the battery meter display style: either a battery symbol or a battery voltage value. The default is “Symbol”. This feature is available for the LYNX only. This feature is not available for tank transmitters. Tank transmitter battery voltage is shown as an icon only.
Page 59: Battery Test
Transmitter batteries. 10.10 Battery Test This menu item applies to the LYNX dive computer only. It does not apply to the Transmitters. This feature runs a battery test for the selected LYNX battery type and displays the estimated remaining dive time. This test will take approximately 1 minute. During the battery test, you will see the screen light up progressively with white pixels, to provide a battery reading when the unit is at maximum battery consumption.
Page 60: Time/Date
NASA in outer space. However, they can have a “drift” that can cause your unit to gain or lose time at a predictable rate. Should your LYNX be noticeably gaining or losing time, you can follow our Time Calibration Procedure to correct for your unit’s drift.
Page 61: Connect To Pc
11:26:18pm. d) In this example, your LYNX is slow by 2 minutes, 18 seconds over 48 hours. We need the error over 24 hours, so we divide by two, yielding 1 minute, 9 seconds slow per day.
Page 62 Group’s tank pressures, and will provide you with remaining Air Time information for your own tank. If you choose to unlock the Locator feature of the LYNX, you will have to enter the Locator PIN you have obtained into your LYNX computer in this Locator PIN menu.
Page 63: Underwater Menus
“Best Gas” for you to switch to, this gas will be indicated with an asterisk (*). In this example, the computer is recommending a switch to 50% Nitrox: Liquivision Products, Inc -63- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 64: Lost Gas (Only In Tec Mode)
“Lost”. This will prevent this Lost Gas from being used in ascent schedule planning. If you fail to do this, your ascent schedule will be wrong, as the LYNX will assume that you can still use that gas. The gases will be listed from the one with the highest content of O2 to the one with the lowest.
Page 65: Ai Mode
You can get more information on Air Integration in the description of the surface Air Integration menu, as well as in Diving With Your Lynx – Air Integration Functions. Liquivision Products, Inc -65- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 66: Locate
Mode or Buddy Mode for Air Integration, to benefit from the larger dive information screen, but you may want to set up your Lynx to monitor 6 Transmitters in total – yours, your buddy’s, those of three other divers (called Tom, Bob and Stan) and a Location transmitter (called Boat 4) – and all of these would show up in the Locator list.
Page 67: Compass
Buddy’s tank pressure – 700 PSI. To get useful data from the locator screen, you must turn your arm so the LYNX is held level. If that is uncomfortable, you can remove the Lynx from your arm entirely and hold it in your hand in front of you.
Page 68: Stopwatch (Only In Gauge Mode)
If the Stopwatch is “Off”, your LYNX’s underwater menu has an item called “Stopwatch On”. If you select this item by tapping either side of your LYNX unit, you will activate the Stopwatch function and you will see your dive display rearrange itself – it will show the Stopwatch in addition to the information it was previously displaying.
Page 69: Dark Mode On/Off (Only In Gauge Mode & Only If Dark Mode Is Activated In The Surface Menus)
ALTERNATE LARGE In Rec and Tec mode, the LYNX display varies depending on whether Air Integration is “Off” or, if it is “On”, whether you are in “Solo”, “Buddy”, “Group 4” or “Group 9” mode. You can change this setting in the...
Page 70: Advanced
“ Simulate Dive” section of the manual). In such a case, choosing this will immediately stop simulation, and return back to the surface menus. Liquivision Products, Inc -70- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 71: Diving With Your Lynx In Rec Mode
Mode we will describe in this section. In Rec mode, the LYNX functions as a one-gas computer. The default mix is Air. You can set any mix from 21%-40% oxygen, including common mixes such as Air (21%), 32% nitrox or 36% nitrox.
Page 72 ™ Air Integrated Dive Computer User Manual If you have a T1 or U-2 Tank Transmitter set up on your tank, and you have turned the LYNX Integration feature “On”, you will be able to track your tank pressure in PSI/BAR and obtain an Air Time value.
Page 73: Setting Up A Dive In Rec Mode
Always Check For Software Updates . The LYNX dive computer software likely still has bugs. We have looked for them and tried to eliminate them, but they can still appear during use. Bugs can cause the unit to provide inaccurate or incomplete information, or cause the unit to reset or turn off and stop providing any information at all.
Page 74: Settings That Will Affect Your Dive
The conservatism setting of your LYNX will affect the length of your No Decompression Limit (NDL); the more conservative the setting, the shorter your NDL time. In Rec mode, your LYNX is automatically set to run on a more conservative setting and, for your safety, this cannot be changed in Rec mode.
Page 75: Beginning Your Dive
User Manual Beginning Your Dive When you start to descend and go below 1.6 meters / 5.25 feet, your LYNX will turn into dive mode. Dive Display There are two main types of underwater display layouts depending on the type of Air Integration display mode you have chosen: Off/Solo/Buddy and Group 4/Group 9.
Page 76: Air Integration
Buddy Mode Group 4/Group 9 Mode Air Time If you have a Tank Transmitter set up on your tank, you have turned the LYNX Air Integration feature “On”, and you are in Solo or Buddy mode, you will be able to track your tank pressure in PSI/BAR and obtain an Air Time value on your screen.
Page 77 Also, the Air Time feature is an estimate – don’t trust it blindly – favor your raw LYNX pressure value and your analog pressure gauge reading! While we did our best to make sure Air Time is accurate, it is a less reliable value than the LYNX tank pressure information displayed –...
Page 78: Tts (Total Time To Surface) And Max Depth Display
WARNING Air Time Is An Estimate! Don’t Trust It Blindly! When in doubt, trust the LYNX pressure value over the Air Time estimate. If in doubt of the LYNX pressure value, trust your analog submersible pressure gauge (SPG). TTS (Total Time to Surface) and Max Depth Display If you turned the “...
Page 79: Decompression Information Zone
Graphical Decompression Stop Information In certain modes, the LYNX provides you with graphical cues to help you execute your decompression plan correctly. In REC Mode, they appear when Air Integration is “Off” or in Solo mode. They are not available in Buddy, Group 4 or Group 9 modes, as the space is taken up by Air Integration information.
Page 80: Graphical Ascent/Descent Indicators & Alarms
3. Hold Starfish in box! 4. Small Down Arrows start of Starfish & Stop Alarm Graphical Ascent/Descent Indicators & Alarms The LYNX provides you with a number of graphical cues to help you manage your descent and ascent rates, based on the Alarms you have set up.
Page 81: Gas
The CNS alarm will be displayed if you have exceeded your CNS limit. For more information on this alarm, please refer to the Oxygen loading section of the manual. Liquivision Products, Inc -81- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 82: Temperature
“C” or “F” letter next to the temperature value to let you know which units you have selected. Keep in mind that the temperature sensor is inside the LYNX unit, so it can take many minutes for it to adjust to a rapid external temperature change.
Page 83: Battery Indicators - Transmitter(S)
In the event that your battery is very low during the dive, your LYNX will go into “Battery Savings” mode. It is a mode that tries to preserve the battery as much as possible, so that the LYNX keeps functioning as long as possible. This mode changes the following things: •...
Page 84: Last Dive Information
Saturation” menu item. Altitude Compensation/Surface Pressure Adjustments The LYNX does not have a water sensor that can sense whether it is in the water based on “wetness”. Instead, your LYNX continuously tracks atmospheric pressure to determine the surface pressure at the start of your dive.
Page 85 LYNX, for example: • if you place your LYNX in shallow and very stable body of water (such as a bucket full of dive gear being rinsed), your LYNX may assume that current surface pressure is more than it is in reality.
Page 86: Diving With Your Lynx In Tec Mode
, with one of three possible levels of Conservatism, based on common Bühlmann Gradient Factors. If you have a Tank Transmitter set up one, two or three of your tanks, and you have turned the LYNX Air Integration feature “On”, you will be able to track your tank pressure in PSI/BAR for the tank you are currently breathing from.
Page 87: Setting Up A Dive In Tec Mode
You must have a plan to handle the failure of the LYNX dive computer, the Tank or Location Transmitter during your dive. You must always carry backup instruments, including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, a compass, and have access to decompression tables.
Page 88 - Depth: 30 metres (100 feet) - Time: 60 minutes - Ascent Rate: 10 metres per minute (30 feet per minute) - Descent Rate: 30 metres per minute (90 feet per minute) Liquivision Products, Inc -88- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 89: Settings That Will Affect Your Dive
Settings That Will Affect Your Dive Gas Settings You should only set up the gases you plan to carry on a given dive, as your LYNX will assume you have these gases available to calculate your decompression. For example, if you use the “...
Page 90: Switching Gases
Should you lose a gas during your dive, you should use the “LOST GAS” option to remove this gas from your gas list, so that your LYNX recalculates your dive plan according to the gases you are actually carrying/breathing. Switching Gases...
Page 91: Po2 Settings
5m / 15ft. The safety stop is optional. If you skip the safety stop, you will not be penalized. If you exceed the NDL, then your LYNX will automatically start computing your decompression plan and will suggest decompression stops accordingly. It will NOT suggest a mandatory safety stop in this scenario, as the safety requirements should be fulfilled by following the decompression stops.
Page 92: Entering The Water
1.6 meters / 5.25 feet. Beginning Your Dive When you start to descend and go below 1.6 meters / 5.25 feet, your LYNX will turn into dive mode. Dive Display There are two main types of underwater display layouts depending on the type of Air Integration display mode you have chosen: Off/ or Tec-Solo.
Page 93: Tts (Total Time To Surface) And Max Depth Display
Air – Dive Gas 50% - Deco Gas O2 – Deco Gas Remember! When you switch gases underwater, the LYNX automatically starts monitoring the transmitter of the new gas. TTS (Total Time to Surface) and Max Depth Display If you turned the “...
Page 94: Graphical Decompression Stop Information
3. Hold Starfish in box! 4. Small Down Arrows start of Starfish & Stop Alarm Graphical Ascent/Descent Indicators & Alarms The LYNX provides you with a number of graphical cues to help you manage your descent and ascent rates, based on the Alarms you have set up.
Page 95: Cns Loading
Log. N2 Loading Your LYNX offers a visual indicator of Nitrogen (N2) loading. During the NDL (No Deco Limit) period, the N2 indicator will be green. As you exceed your NDL, the N2 indicator will add yellow and red bars. This means you have excess nitrogen that you must release through decompression.
Page 96: Temperature
“C” or “F” letter next to the temperature value to let you know which units you have selected. Keep in mind that the temperature sensor is inside the LYNX unit, so it may take a moment for it to adjust to a rapid external temperature change.
Page 97: Battery Indicators - Transmitter(S)
Your transmitter battery icon The battery life is significantly affected by the Air Integration mode you select and the brightness setting of your display. Learn more about your LYNX’s battery in the section “Overview of Lynx, T1, U-2, and L1 Battery Types”.
Page 98: Battery Savings" Mode
In the event that your battery is very low during the dive, your LYNX will go into “Battery Savings” mode. It is a mode that tries to preserve the battery as much as possible, so that the LYNX keeps functioning as long as possible. This mode changes the following things: •...
Page 99: Altitude Compensation/Surface Pressure Adjustments
Saturation” menu item. Altitude Compensation/Surface Pressure Adjustments The LYNX does not have a water sensor that can sense whether it is in the water based on “wetness”. Instead, your LYNX continuously tracks atmospheric pressure to determine the surface pressure at the start of your dive.
Page 100: Diving With Your Lynx In Gauge Mode
Dive Planning WARNING Your LYNX in Gauge Mode acts as a bottom timer – it calculates the duration of your dive, its depth, and other simple parameters. It does not make any decompression calculations, nor does it provide any decompression information. You will need to use other means (tables, desktop decompression planners, dive computers, etc.) to plan your dive.
Page 101: Turning Your Lynx On
“Down” direction three/five times. Otherwise, it will turn on automatically few seconds after you take it deeper than 1.6 meters / 5.25 feet. Beginning Your Dive When you start to descend and go below 1.6 meters / 5.25 feet, your LYNX will turn into dive mode. Diving Dive Display You have three different underwater display layouts to choose from: Standard, Simple, Alternate, and Large.
Page 102: Dive Time
Please refer to the screenshots above to locate the time value for each display setting. Dive time is measured in seconds, starting from the moment your LYNX reaches 1.6 meters / 5.25 feet. It will stop once you surface, and it will reset once you have been on the surface for more than 5 minutes.
Page 103: Stopwatch
User Manual Stopwatch As you begin your dive and your LYNX enters dive mode, the stopwatch will be off. You can activate the stopwatch during your dive by tapping into menu mode and selecting “Stopwatch On”. Turning the stopwatch on will cause the time display to shrink and move, and the stopwatch to take its place.
Page 104: Time Of Day
You will see a “C” or “F” letter next to the temperature value to let you know which units you have selected. Keep in mind that the temperature sensor is inside the LYNX unit, so it may take a moment for it to adjust to a rapid external temperature change.
Page 105: Battery Indicators - Transmitter(S)
In the event that your battery is very low during the dive, your LYNX will go into “Battery Savings” mode. It is a mode that tries to preserve the battery as much as possible, so that the LYNX keeps functioning as long as possible. This mode changes the following things: •...
Page 106: Exiting The Water
User Manual Exiting the water Once you are shallower than 0.6 meters / 2 feet, your LYNX will go back into surface mode and offer you access to surface menus. However, for next few minutes, it will remain in post-dive mode. You can control length of this period,...
Page 107: Altitude Compensation/Surface Pressure Adjustments
User Manual Altitude Compensation/Surface Pressure Adjustments The LYNX does not have a water sensor that can sense whether it is in the water based on “wetness”. Instead, your LYNX continuously tracks atmospheric pressure to determine the surface pressure at the start of your dive.
Page 108: Diving With Your Lynx - Air Integration Functions
1.5m/6ft, while the LYNX-AI offers a range of up to 100m/330ft. The LYNX-AI range can be affected by a large number of factors, which we will discuss later. Nevertheless, it is fair to say that in the vast majority of open-water conditions, the LYNX range is greater than the “safe”...
Page 109: Setting Up An Air Integrated Dive
WARNINGS Limited Signal Range The LYNX-AI has a maximum signal range of up to 100m/330ft in clear water and with an unobstructed line of sight between any LiquivisionTransmitter to the LYNX computer. The actual LYNX-AI range varies based on local conditions and cannot be guaranteed. Factors that can shorten range can include, but at not limited to, water turbidity, physical obstructions, ultrasonic noise or echoes, air pockets or LYNX/Transmitter device orientation.
Page 110 NDL times, and it will give you best results when you have a fairly long surface interval between dives (two hours or more), as is typical for most decompression dives. Your LYNX dive plan will closely align with DecoPlanner and similar dive planning tools using the Bühlmann model with gradient factors. Read...
Page 111: Positioning Your Lynx To Get The Best Possible Transmitter Signal
You are now ready to begin an Air Integrated dive! For best AI performance, it is important that you position the LYNX correctly on your wrist and try to avoid factors that reduce LYNX range. Both are explained in more detail below.
Page 112: Hand & Wrist Position
LYNX will obstruct one of the three sensors. If you must wear another device next to your LYNX, make sure it is at least 15cm/6” away on your arm, secured tightly so that it doesn’t drift around during the dive.
Page 113: Summary Of Factors That Affect Lynx-Ai Range
Orientation of Tank Transmitter on your own and other divers’ tanks, positioning L1 in open water For best results, make the LYNX the only instrument on your arm and hold your arm in front of you at a 45° angle, to minimize obstruction by your own body. The Transmitters have a “dead” zone in line with their main axis –...
Page 114: Diving With Your Lynx - Locator Functions
Then, the Locate screen will appear. At this point, you should hold your LYNX in front of your chest, as level as possible. The “Liquivision LYNX” logo should be parallel to the front of your chest. Each...
Page 115: For The Locator To Work, The Lynx Must Be Kept Horizontal
• If the dot is in the middle circle, near the intersection of the two lines, it will appear as light blue. This means your LYNX is level and will receive packets. •...
Page 116: How To Navigate When You Get Your First Packet
How To Navigate When You Get Your First Packet Once you receive your first packet, the LYNX will either show a forward cone, or illuminate the left or right hemisphere. The illuminated area indicates there is a chance that the target is within that sector. In the case of the left hemisphere, it means that the target could be in the directions shown by the arrows, below.
Page 117: More Details About What You See On Your Screen
Below are a couple of images showing how the map might look after getting three or four packets. The red arrows show possible target directions, the yellow arrow shows the most likely target direction: Liquivision Products, Inc -117- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 118: Packet Aging
The accuracy of the LYNX locator function depends on many factors, including operator skill, how the LYNX unit is held, and the underwater environment (obstructions, echoes, air pockets, bottom profile), and also how good a line of sight exists from the wrist unit to the target's transmitter.
Page 119: Troubleshooting The Locator Feature
2. Make sure you tilt your hand downwards to avoid obstructing the LYNX sensors, keeping your forearm level but bending at your wrist. 3. Make sure all three LYNX sensors have a CLEAR line of sight to the horizon and are not being blocked by your body, your gear, other gauges on your arm.
Page 120: Using The Distance Estimate To Get Best Signal Reception
Using The Distance Estimate To Get Best Signal Reception The distance estimate on the LYNX locator screen is useful for more than just estimating the distance to the target. If the target is truly in front of you, the signal will be generally stronger, than if the target is behind you.
Page 121: Don't Remain Still
However, if you get a front cone showing on the LYNX, then you can wait, motionless, and if you keep getting front cones (while remaining motionless), then you have a very good indication that the target is directly in front of you.
Page 122: Caring For Your Lynx And Transmitters
Sensitive Areas of Your Lynx We have placed several LYNX units in a rock tumbler for 24 hours to see how the casing, glass and black ultrasonic sensors react to repeated acute impacts. The screen and casing were largely unaffected.
Page 123: Sensitive Areas Of Your U-2/L1 Transmitters
Post-Dive Care and Storage of your LYNX and Transmitter(s) You should turn off your LYNX once you have completed your dive. It will eventually turn off on its own, but you will conserve battery power by turning it off once you are done using it.
Page 124: Long-Term Lynx And Transmitter Storage
If you are planning to store your LYNX and Transmitter(s) for more than 1 month, you should remove the battery. In your LYNX, this will only cause you to lose time of day and date information. All other settings and dive logs will remain. There will be no data loss in the Transmitters.
Page 125: Overview Of Lynx, T1, U-2 And L1 Battery Types
3200mAh 530mAh 650mAh 800mAh 3000mAh Color Blue Blue (FAT) White Green Red (FAT) Used in: LYNX LYNX LYNX Used in: T1, U-2 T1, U-2 T1, U-2 U-2E, L1 Liquivision Products, Inc -125- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 126: Battery Types By Product
User Manual B AT T E R Y T Y PE S B Y PR ODUC T LYNX and T1 Battery Types There are several battery options available for your LYNX and T1 Transmitter: Disposable Battery • Blue wrapper ER17335M...
Page 127: Battery Types
User Manual U-2 Battery Types The U-2 has a larger battery compartment than the T1, which makes it compatible with BOTH the Lynx/T1 batteries above AND the larger capacity disposable and rechargeable batteries below. U-2 Disposable Battery – ER26300M •...
Page 128: U-2E - The U-2 Extension Kit
™ Air Integrated Dive Computer User Manual Use of the Lynx/T1 ER17335M and LFP123A batteries in the U-2: You are also able to use the • disposable ER17335M battery as well as the • rechargeable LFP123A battery which you would usually use for the Lynx in you U-2.
Page 129: L1 Battery Type
Unscrew the L1 top from the bottom Load the IMR26500 into the Screw the transmitter base into battery top the cap WARNING THESE BATTERIES ARE THE ONLY AUTHORIZED BATTERIES Liquivision Products, Inc -129- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 130 Use of other batteries could lead to inaccurate battery meter readings, and if the battery reading is not accurate, you could be diving your LYNX or Transmitter on an empty battery without knowing it. This could lead your LYNX or Transmitter to turn off unexpectedly leading to a loss of critical dive information.
Page 131: Spare Batteries You Can Buy From Liquivision
 2 rechargeable IMR26500 batteries You should inspect your LYNX and Transmitter battery cap O-rings with every battery change. Check for cracking, damage or dirt. If you choose to replace an O-ring, always make sure to clean the battery cap properly to remove any residue that may prevent a good seal and to lubricate the new O-ring with silicone O-ring lubricant.
Page 132: Battery Compartment O-Ring Information
B AT T E R Y C OM PA R T M E NT O-R I NG I NF OR M AT I ON This section discusses battery compartment O-Rings – the O-Rings found on the LYNX dive computer and Transmitter battery compartments. This does not provide information on the Viton® O-Ring found on the T1 and U-2 Transmitter metal base.
Page 133 ™ Air Integrated Dive Computer User Manual You purchased your All Xen, Xeo, Kaon, LYNX computers & T1 Transmitter & computer or T1 transmitter Battery Packs Containing O-Rings Sold AFTER June 1, 2013 AFTER June 1, 2013 Use this type of battery cap O-Ring:...
Page 134: Determining & Optimizing Battery Life
You can best check the battery life at this point by entering into a dive simulation. Your LYNX uses more power in dive mode than in surface mode. The LYNX may show a green indicator in surface mode, but a yellow one in dive mode and you can check this by starting a dive simulation.
Page 135: Basic Rules For Optimizing Battery Life In Your Lynx
It is hard to estimate the amount of time left. Even if your LYNX or Transmitter knew exactly how much battery power is left, it is still hard for your unit to judge how much dive time is left.
Page 136: Basic Rules For Optimizing Battery Life In Your Tank Or Location Transmitter
1. Air Integration Mode . The Air Integration mode has the biggest impact on battery life, as it means the LYNX is constantly checking for data packets from one or more transmitters. For this reason, it is important to use the minimum Air Integration mode you need for a given dive. The most battery- friendly AI mode is “Off”, followed by “Solo”, then by “Buddy”, “Group 4”...
Page 137: Estimated Lynx Battery Life Depending On User Settings
10/8.4h Buddy As you can see, the LYNX “On” hours on a battery vary from about 23 hours to 53 hours with a disposable ER17335M battery or from 7 hours to 18.5 hours with a rechargeable LFP123A battery. Please note that storing a battery inside a unit also affects the battery life, as the unit uses power even when it is turned off.
Page 138: T1 Transmitter Battery Life
Lynx Firmware v1.11 and above significantly reduce the extent to which your Lynx will drain the battery when turned off. With v1.10 or below, the Lynx is capable of draining a battery in about a week and a half, if the unit sits unused with a battery inside.
Page 139: Changing The Lynx's Or T1'S Battery
Here is a description of the battery change and O-ring change procedure. You can also refer to the short video on correct battery changes provided here: www.liquivision.com/videos.php. Most of the steps are the same for the LYNX and the T1.
Page 140 Pulling too hard can break the wires!!! 8. Pull out just enough to access the battery  DO NOT pull out all the way! It can break the wires! Liquivision Products, Inc -140- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 141 Screw the battery cap on the compartment using your fingers. You can use a coin if you need to, but do it GENTLY so you don’t over tighten and damage the threads. Liquivision Products, Inc -141- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 142: Option- Change O-Ring
14. Inspect the new O-ring for dust or defects  DO NOT use a dusty O-ring! - If the new O-ring is not clean, wash it with clear water and let it air-dry Liquivision Products, Inc -142- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 143 3. Then… turn clockwise to tighten the cap. If something feels wrong, stop and start again.  CLICK! DO NOT force the cap – you could damage the threads! Liquivision Products, Inc -143- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 144: Changing The U-2 Or L1 Battery
For the L1, don’t screw it down all the way – remember, screwing it down turns it “On” and unscrewing it turns it “Off”, like a dive light. See pictures here: Turning The L1 Transmitters On/Off Liquivision Products, Inc -144- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 145: Lynx Pc Interface
Make sure that your LYNX PC interface is NOT plugged in to your desktop computer. If it is plugged in, then please UNPLUG it before proceeding. PC Drivers: Internet Explorer •...
Page 146: Pc Drivers: Firefox
The Liquivision Dive Logger program allows you to download your dive logs from your LYNX. In order to use it you must have the LYNX PC interface device and if you are a PC user the FTDI drivers must be installed on your computer (as described above).
Page 147: Pc Dive Logger: Internet Explorer
• Follow the wizard and the Liquivision Dive Logger software will be installed. • The wizard will install a shortcut to the Liquivision Dive Logger on your desktop. To launch the logger, double click on the shortcut. Create a username for yourself, and you’re ready to go! PC Dive Logger: Firefox •...
Page 148: How To Connect The Lynx Pc Interface To Your Computer
LYNX bottom timer. To download your dives, first: • Make sure the LYNX FTDI drivers have been installed on your computer (applies to Windows users only) (Instructions). • Make sure the Liquivision Dive Logger has been installed on your computer (Instructions).
Page 149: How To Install The Liquivision Firmware Updater Onto Your Pc
How To Install The Liquivision Firmware Updater Onto Your PC To update the firmware inside your LYNX, you need the LYNX PC interface device, and you need to install a utility called the "Liquivision Firmware Updater." If you do not have a LYNX PC interface and you would like to update the firmware on your unit, your dealer should be able to do it for you.
Page 150: Pc Firmware Updater: Google Chrome
How To Install the Newest Firmware On Your LYNX You should always run the latest and most recent software on your LYNX. You may already have the latest version, which makes an upgrade unnecessary. You can find out which version you are running...
Page 151: Pc: Internet Explorer Firmware Install
™ Air Integrated Dive Computer User Manual • Place the LYNX on the desk, on its side, with the PC interface aiming for the eight holes on the backplate (see photo below) • The distance from the PC interface to the LYNX should be between 2cm and 4cm (1-2 inches).
Page 152: Mac-Osx Firmware Install (All Browsers)
• Alternatively you can launch the firmware updater from your Applications and browse for the file on your computer • Then click OK • On the next screen click UPLOAD Liquivision Products, Inc -152- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...
Page 153: All Users
After several minutes of further data transfer, the install will finish. If the install succeeded, you should now be able to pick up your LYNX and use it. To verify that the install succeeded, enter the main menu, and go to Preferences->Status, and the software version should be the same as the version that you tried to install (i.e.
Page 154: Support Contacts
User Manual SU PPOR T C ONTA C T S For general information, please visit www.liquivision.com. If you need immediate assistance, we recommend that you contact your LYNX dealer. If you need further help, please contact us via: www.liquivision.com/contact.php B I B L I O G R A PH Y Baker, Eric C.
Page 155: Appendix A - Photos Good/Bad T1/U-2 Positions
If that is the case, it is possible you may be able to use an adaptor, like the ones made by Omniswivel or XSScuba: http://www.xsscuba.com/hose_adapt ers.html - scroll to part 906. Liquivision Products, Inc -155- Manual 1.6; Lynx 1.18; US 1.11; U-2 3.06...

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