- DL manuals
- Suunto
- Diving Instrument
- HELO2
- User Manual
Suunto HELO2 User Manual
Summary of HELO2
Page 1
En user’s guide helo 2.
Page 3
1. Welcome to the world of suunto diving instruments . . . . . . . . . . . . . . . . 5 1.1. Using helo 2 with dive manager and dive planner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Warnings, cautions, and notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Page 4
6.1.5. Decompression dives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 6.2. Diving in mixed gas mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 6.2.1...
Page 5
1. Welcome to the world of suunto diving instruments suunto helo 2 was designed to help you get the most out of your diving. With easy-to-use pc dive planner and gas switching, suunto helo 2 simplifies your diving experience because all the information you need relating to depth, time, tank pressure...
Page 6
2. Warnings, cautions, and notes throughout this manual, important safety icons are displayed. Three classifications are used to separate these icons by their order of importance: warning is used in connection with a procedure or situation that could result in serious injury or death caution is used...
Page 7
Warning dives that require decompression stops are not re- commended. You should ascend and begin decompres- sion immediately when the dive computer shows you that a decompression stop is required! Note the blinking asc time symbol and the upward pointing arrow. Warning use back-up instruments! Make...
Page 8
Warning select the correct altitude adjustment setting! When diving at altitudes greater than 300 m/1,000 ft the altitude adjustment feature must be correctly selected in order for the computer to calcu- late the decompression status. The dive computer is not intended for use at altitudes greater th...
Page 9
3. Suunto helo2 at a glance 3.1. Navigating in the menus suunto helo 2 has four main operating modes: 1. Time mode 2. Dive mode (mixed gas, gauge) 3. Plan mode (nodec) 4. Memory mode (history, logbook) to toggle between the main modes, press the mode button. To select a submode in dive and memory mo...
Page 10
Main functions press button symbol enter setting mode long down 10
Page 11
4. Getting started with your suunto helo2 to get the most out of your suunto helo 2 , take some time to personalize it and really make it your computer. Set the correct time and date, tones, unit and backlight settings. Suunto helo 2 is a very user-friendly dive computer, and you will quickly become...
Page 12
Adjust with up and down buttons. Accept with select button. 4.1.4. Setting the backlight use the backlight setting mode to turn the backlight on or off and to define how long it stays on for (5, 10, 20, 30, or 60 seconds). When the backlight is turned off, it does not illuminate when an alarm sounds...
Page 13: 5. Before Diving
5. Before diving do not attempt to use the dive computer without reading this user's manual in its entirety, including all the warnings. Make sure that you fully understand the use, displays, and limitations of the instrument. If you have any questions about the manual or the suunto helo 2 , please ...
Page 14
You are advised to make a deepstop at 18 m. The second indicator shows that you have 110 seconds left of your deepstop. In order to optimize the response to different increased risk situations, an additional category of stop, referred to as a mandatory safety stop, has been introduced. The combinati...
Page 15
5.6. Audible and visual alarms the dive computer has audible and visual alarms that advise when important limits are approached or that prompt you to acknowledge preset alarms. The table below describes the different alarms and their meanings. Table 5.1. Audible and visual alarm types alarm reason a...
Page 16
Alarm reason alarm indication the selected depth (3 - 120 m / 10 - 394 ft) is exceeded. Three beeps with a one second interval for 24 seconds. Maximum depth blinks. The fixed maximum depth (120 m / 394 ft) is exceeded. The selected dive time (1 - 999 min) is ex- ceeded. Three beeps with a one second...
Page 17
Omitted decompression the error mode results from omitted decompression, i.E. When you stay above the ceiling for more than three minutes. During this three-minute period the er warning is shown and the audible alarm beeps. After this, the dive computer will enter a permanent error mode. The instrum...
Page 18
2. Ensure that the suunto helo 2 is turned on, and that the wireless integration is enabled in the suunto helo 2 settings (hp set on, see section 5.9.8. Setting the hp code). The helo 2 should display “cd:--” in the lower left corner of the alternative display. 3. Slowly open the cylinder valve full...
Page 19
A b c d e 5.9. Mixed gas dive mode settings suunto helo 2 has several user-definable functions, as well as depth and time-related alarms that you can set according to your personal preferences. The dive mode settings are dependent on the dive submode chosen (mixed gas, gauge), so that, for example, ...
Page 20
The asc time is calculated based on the assumption that you start the ascent profile im- mediately and all the primary gases are changed as soon as their maximum operating depth allows it. That is, using the gases that are set as primary, the most optimal ascent schedule for the moment is calculated...
Page 21
Adjust with up and down buttons. Accept with select button. 5.9.5. Setting the sample rate the sample rate controls how often the depth, time, tank pressure, and water temperature is stored in the memory. You can set the dive profile sample rate to 10, 20, 30, or 60 seconds. The factory default sett...
Page 22
Adjust with up and down buttons. Accept with select button. Select tank pressure on. 5.9.9. Setting the units use unit settings to choose between metric (meters/celsius/bar) and imperial (feet/fahrenheit/psi) units. Adjust with up and down buttons. Accept with select button. 5.10. Activation and pre...
Page 23
• the altitude and personal adjustment settings are correct • the instrument displays correct units of measurement (metric/imperial) • the instrument displays the correct temperature and depth (0.0 m/0 ft) • the alarm beeps if the optional wireless pressure transmitter is used ensure that: • the pre...
Page 24
Altitude range alt. Adjustment value 1500 - 3000 m / 5000 - 10 000 ft a2 note section 5.9.4. Setting the personal/altitude adjustments describes how the altitude value is set. Warning traveling to a higher elevation can temporarily cause a change in the equilibrium of dissolved nitrogen in the body....
Page 25
Desired tables condition personal adjust- ment value progressively more conservative some risk factors or conditions exist p1 several risk factors or conditions exist p2 warning personal adjustment setting p0 – p-2 causes a high risk of dci, or other personal injury, and death. 5.11. Safety stops sa...
Page 26
When ceiling and stop are displayed, make a one minute mandatory safety stop in the depth zone between 6 m and 3 m. You must not ascend shallower than 3 m/10 ft with the mandatory safety stop warning on. If you ascend above the mandatory safety stop ceiling, a downward pointing arrow will appear and...
Page 27: 6. Diving
6. Diving this section contains instructions on how to operate the dive computer and interpret its displays. You’ll find that this dive computer is easy to use and read. Each display shows only the data relevant to that specific diving mode. 6.1. Diving-related information in this section, we look a...
Page 28
6.1.2. Bookmark it is possible to record bookmarks in the profile memory during a dive. These bookmarks are displayed when scrolling the profile memory on the display. The bookmarks will also be shown as annotations in the downloadable suunto dive manager pc software. The bookmark logs the depth, ti...
Page 29
The ascent time (asc time) is the minimum amount of time needed to reach the surface in a decompression dive. It includes: • the time needed at the deep stop • the time needed to ascend to the ceiling at an ascent rate of 10 m/33 ft per minute. The ceiling is the shallowest depth to which you should...
Page 30
Warning never ascend above the ceiling! You must not ascend above the ceiling during your decompression. In order to avoid doing so by accident, you should stay somewhat below the ceiling. Display below the floor the blinking asc time and an upward pointing arrow indicate that you are below the floo...
Page 31
Decompression dive, above ceiling. Note downward pointing arrow, er warning and alarm. You should immediatly (within 3 minutes) descend to or below ceiling. In addition, an error warning (er) reminds you that you have only three minutes to correct the situation. You must immediately descend to, or b...
Page 32
Mixed gas dive mode activation, maximum operational depth based on set o 2 % (14%), he 2 % (32%), and po 2 (1.4) is 83.3 m. If set to mixed gas mode, the suunto helo 2 will additionally show on the alternative display: • the oxygen percentage, labeled o 2 % • the helium percentage, labeled he% • the...
Page 33
Changing gas mix. Scroll through enabled mixes by pressing the up or down buttons. Select new mix by pressing the select button. Note mix number, o 2 %, he% and po 2 for the mixes are shown when scrolling. If the set po 2 limit is exceeded , it will be shown with the po 2 value blinking. The dive co...
Page 34: 7. After Diving
7. After diving once back at the surface, suunto helo 2 continues to provide post-dive safety information and alarms. Calculations to enable repetitive dive planning also help to maximize diver safety. Table 7.1. Alarms indication symbol on display diver attention symbol - extend surface interval vi...
Page 35
7.3. Repetitive dive planning the suunto helo 2 includes a dive planner that allows you to review the no-decompression limits on a subsequent dive, taking the residual nitrogen loading of previous dives into consideration. The dive plan mode is not meant for technical dive planning which the suunto ...
Page 36
By pressing the up/down buttons, you can scroll the no-decompression limits in 3 m/10 ft increments ending at 45 m/150 ft. No-decompression limits longer than 99min are dis- played as “—“. When entering the plannodec mode the display first briefly shows the remaining desaturation time before going i...
Page 37
The dive time and date are registered in the logbook memory. Always check before diving that the time and date are correctly set, especially after traveling between different time zones. 7.6.1. Dive logbook (memlogbook) the suunto helo 2 has a very sophisticated, high capacity logbook and profile me...
Page 38
• olf percentage of mixed gas dive page iii • scrolling • dive profile (temperature, depth, tank pressure, gases) note the memory will retain approximately the last 42 hours of dive time. After that, when new dives are added, the oldest dives are deleted. The contents of the memory will remain when ...
Page 39
Note for emergency ascents, always print out the dive plan from suunto dive planner. It ensures that you have a valid decompression schedule at hand in an unlikely event that the dive computer malfunc- tions. For more information about the warnings, such as isobaric counterdiffusion (icd), and setti...
Page 40
The communities section is meeting a place for smaller groups of suuntosports.Com members. Here you can create and manage your own communities and search for others. All communities have a home page that lists the latest group activities. Community members can also use group-specific bulletin boards...
Page 41
8. Care and maintenance of my suunto diving computer the suunto dive computer is a sophisticated precision instrument. Although it is designed to withstand the rigors of scuba diving, you must treat it with the same proper care and caution as any other precision instrument. • water contacts and push...
Page 42
The water resistance of the unit must be checked after replacing the battery or after other service operations. The check requires special equipment and training. You must frequently check the display for any sign of leaks. If you find moisture inside your dive computer, there is a leak. A leak must...
Page 43: 9. Battery Replacement
9. Battery replacement note it is advisable to contact an authorized suunto representative for battery replacement. It is imperative that the change is made in a proper manner to avoid any leakage of water into the battery compart- ment or computer. Caution defects caused by improper battery install...
Page 44
11. Check that the new lubricated o-ring is in good condition. Put it in the right position on the battery compartment lid. Be very careful not to get any dirt on the o-ring or its sealing surfaces. 12. Carefully press the lid onto the battery compartment with your thumb, while making sure that the ...
Page 45
Caution defects caused by improper battery installation are not covered by the warranty. 9.4.1. Transmitter battery kit the transmitter battery kit includes a 3.0 v cr ½ aa lithium cell battery and a lubricated o-ring. When handling the battery, do not make contact with both of the poles at the same...
Page 46
Wireless transmitter parts. The code stands for spare part order number. 46.
Page 47: 10. Technical Data
10. Technical data 10.1. Technical specifications dimensions and weight: • diameter: 61.0 mm/2.4 in • thickness: 28 mm/1.1 in • weight: 68 g/2.4 oz transmitter: • max. Diameter: 40 mm/1.57 in • length: 80 mm/3.15 in • weight: 118 g/4.16 oz • rated working pressure: 300 bar/4000 psi, maximum allowed ...
Page 48
• helium halftimes:1, 2, 3.5, 7.5, 15, 30, 45, 90, 181 minutes (on gassing). The off gassing halftimes are slowed down. • reduced gradient (variable) "m" values based on diving habit and dive violations. The "m" values are tracked up to 100 hours after a dive • the ean and oxygen exposure calculatio...
Page 49
10.2.1. Suunto technical rgbm decompression model suunto's decompression model development originates from the 1980s when suunto im- plemented bühlmann's model based on m-values in suunto sme. Since then research and development has been ongoing with the help of external and internal experts. In the...
Page 50
10.2.3. Altitude diving the atmospheric pressure is lower at high altitudes than at sea level. After traveling to a higher altitude, you will have additional nitrogen in your body, compared to the equilibrium situation at the original altitude. This "additional" nitrogen is released gradually over t...
Page 51: 11. Intellectual Property
11. Intellectual property 11.1. Copyright this user's manual is copyrighted and all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, or translated to any media without prior written consent from suunto. 11.2. Trademark suunto, helo 2 , consumed bottom time (c...
Page 52: 12. Disclaimers
12. Disclaimers 12.1. User’s responsibility this instrument is intended for recreational use only. Suunto helo 2 must not be used for obtaining measurements that require professional or industrial precision. 12.2. Ce the ce mark is used to mark conformity with the european union emc directive 89/336...
Page 53
13. Suunto limited warranty for suunto diving com- puters and suunto diving computer accessories this limited warranty is valid as of january 1st, 2007. Suunto oy ("suunto") provides this limited warranty to those who have purchased the suunto diving computer and/or suunto diving computer accessorie...
Page 54
This limited warranty is not enforceable if: 1. The product has been opened, modified or repaired by anyone other than suunto or a suunto authorized service centre; 2. The product has been repaired using unauthorized spare parts; 3. The product's serial number has been removed, erased, defaced, alte...
Page 55
From the purchase or use of the product or arising from breach of the warranty, breach of contract, negligence, strict tort, or any other legal or equitable theory, even if suunto knew of the likelihood of such damages. Suunto shall not be liable for delay in rendering service under the limited warr...
Page 56
14. Disposal of the device please dispose of the device in an appropriate way, treating it as electronic waste. Do not throw it in the garbage. If you wish, you may return the device to your nearest suunto representative. 56.
Page 57: Glossary
Glossary altitude dive a dive made at an elevation greater than 300 m/1000 ft above sea level. Ascent rate the speed at which the diver ascends toward the surface. Asc rate abbreviation for ascent rate. Ascent time the minimum amount of time needed to reach the surface on a decompression stop dive. ...
Page 58
No decompression dive any dive which permits a direct, uninterrupted ascent to the surface at any time. No dec time abbreviation for no decompression time limit. Oea = ean = eanx abbreviations for oxygen enriched air nitrox. Olf abbreviation for oxygen limit fraction. Otu abbreviation for oxygen tol...
Page 59: Customer Service Contacts
Customer service contacts global help desk +358 2 284 11 60 suunto usa phone +1 (800) 543-9124 canada phone +1 (800) 267-7506 suunto website www.Suunto.Com copyright this publication and its contents are proprietary to suunto oy. Suunto, dive computer, suunto helo 2 and their logos are registered or...
Page 61: Year
Tw o year warranty t h is p ro d u c t is w a rr a n te d t o b e f re e o f de fe ct s in m at er ia l a nd /o r w or km an sh ip t o th e o rig in al ow ne r f or th e a bo ve n ot ed p er io d (d oe s n ot in clu de b at te ry lif e) . K ee p a c op y o f th e original pu rc hase receipt and mak ...
Page 64
Www.Suunto.Com © suunto oy 4/2009.