Cyano Cyano-RF User manual

1. Introduction -CYANO-RF
2. Definition of Warnings, Cautions, and Notes
3. Getting tarted
3.1 FlowChart
3.1.1 Power ON/OFF
3.1.2 Function and button flowⅠ
3.1.3 Function and button flow Ⅱ
3.1.4 Function and button flow Ⅲ
3.2 Charging
3.2.1 Charging
3.3 Setting from APP
3.3.1 Connecting bluetooth
3.3.2 Setting up TIME mode
3.3.3 Setting up alarm
3.3.4 Setting up distance / temperture unit
3.3.5 Setting up Current time and GPS
3.3.6 Setting up Display brightness
3.3.7 Bluetooth on/off
3.3.8 Guage mode on/off
3.3.9 Setting up condition
3.3.10 Sleep Time
3.3.11 Buzzer ON/OFF
3.3.12 Compass Calibration
4. Before diving
4.1 Buhlmann(ZH-L16C) algorithm
4.2 Emergency ascent
4.3 limitations of Dive computer
4.4 Nitrox
4.5 Free diving
4.6 Audible & visual alarms
4.7 Activating diving mode
4.7.1 Setting up NITROX mode
4.8 pre-checks
4.8.1 Compass
4.8.2 Battery power indication
4.8.3 Diving at altitude
4.8.4 Setting the personal adjustments
4.8.5 Outbreaking conditions of decompression illness
4.9 Safety Stop
4.9.1 Mandatory Safety Stop

4.10 Decompression Stop (DECO)
5. Diving
5.1 Dive with the AIR mode (Dive Air)
5.1.1 Basic dive data
5.1.2 Ascent rate indicator
5.1.3 Stopwatch (Timer)
6. Decompression Dives
6.1.1 What is Decompression Dives
6.2 Dive with NITROX mode (Dive Nitrox)
6.2.1 Cautions before starting Nitrox dive
6.3 Dive with GUAGE mode (Dive Gauge)
7. After Diving
7.1 Surface Interval
7.2 Diving frequency
7.3 Flying after diving
7.4 LOG MODE
7.5 Exclusive APP for CYANO
7.6 No Dive Mode
8. CARE AND MAINTENANCE
8.1 Buttons
8.2 Maintaining dive computer
8.3 Maintenance
8.4 Waterproof test
9. Replacing battery
10. Technical data
10.1 Technical specifications
11. Copyright, Trademark, Patent notice, KC registration of conformity, Guarantee
12. Glossary

1. Introduction - CYANO-RF
CYANO-RF is wristwatch-type dive computer especially designed so various information which is needed for diving be read easily.
CYANO-RF is a wristwatch-style dive computer which has intuitive UI for easy check out of essential data while diving, and it has compact and smooth design for
stylish lifestyle. Also, CYANO-RF is a recareational dive computer with digital compass and nitrox dive function that loaded 1.54" ISP LCD panel to provide wider
and more vivid view for high readability in deep sea.
It is installed with bluetooth 4.1 to be connected with exclusive smart-phone app to manage dive log, share SNS, and adjust device settings as well.
Furthermore, its wireless charging system makes provide convenience of charging and leakage accident prevention caused while replacing battery.
slide-type strap changing method improves compatibility and varies your choice of style.
This manual covers with important and essential information to understand CYANO-RF's diverse functions.
Please make sure to have clear understanding regarding to instructions, displayed information, functional limitation. Thus, please read this user manual carefully and
thoroughly.

2. Definition of Warning, Caution, and Note
Pleas read this manual thoroughly!
Dive computer users must be informed with displayed information and instruction.
Inappropriate use of the device may cause damage to the device or lead serious injuries to deadly situation.
Please do not use the device for commercial or technical diving!
This device is designed for recreational purpose.
Commercial or Technical diving is highly exposed to danger of decompression illness, or can exceed acceptable critical water depth. For these reasons, CYANO
advise not to use the gear for commercial or technical diving
Only trained divers should use this device.
Not any dive computer can replace the need for proper dive training
Inappropriate diving may cause serious injuries to deadly situation.
Whether diving plan shows on dive computer or dive table is followed while diving or not, danger of decompression illness always can be faced. Procedures
provided from dive computer or dive table cannot prevent decompression illness or oxygen intoxication.

It is highly recommended to check own physical status, and have enough rest.
CYANO calculation of sport diving maximum of depth is based on O₂% and set from 1.4bar of maximum oxygen partial pressure (PO₂) set point, and it is also
strongly advised to restrict to dive within 40m of depth that is calculated from dive computer.
It is advised to quit diving when decompression stop is needed. when display shows decompression stop, ascent should be started immediately and also
decompression stop has to be done as directed.
Use BACK-UP gauge. Ensure that you use depth gauge, submersible pressure gauge, timer or watch, and have access to decompression tables whenever diving
with the dive computer.
PERFORM PRE-CHECKS! Always activate and check the device before diving in order to ensure that all LCD segments are completely displayed, the device has not
run out of battery power, and that the oxygen, altitude, personal, and other functional settings state.
It is strongly recommend you to charge the dive computer when you dive again after the previous diving.
When battery has been discharged, decompression information of repetitive diving and previous diving, and other data remain and optimal algorithm cannot be
applied. This problem possibly lead to the danger of providing inaccurate decompression information, and so prohibit to follow the information shown on dive
computer.
Please check out no-fly time before boarding on airplane after diving. Travelling high altitude or flying after diving and while no-flying symbol is still on the
display can increase the risk of decompression illness. If no-flying related regulation is violated, risk of occurring decompression illness cannot be fully prevented.

THE DIVE COMPUTER SHOULD NEVER BE TRADED OR SHARED BETWEEN USERS WHILE IT IS IN OPERATION! Its decompression information the computer calculate
while diving will not apply to someone who has not been wearing it throughout a dive or sequence of repetitive dives. if you dive without wearing dive computer
within 4 days, the dive computer will give inaccurate information for subsequent; thus, following the data on dive computer is prohibited. User of dive computer
must be restricted to one person and use the dive computer every time diving.
Do not round up fractional percentages of oxygen concentration! For example, 31.8% oxygen should be entered as 31%. Rounding up will cause nitrogen
percentages to be understated and will affect decompression calculations. If there is a desire to adjust the computer to provide more conservative calculations, use
the personal adjustment feature to affect decompression calculations.
Set the accurate personal statement! If it is considered there are factors tend to increase the possibility of decompression illness, making calculations more
conservative by using this option is recommended. Failure to set personal adjustment will cause erroneous dive and planning data.
This device used Li-Polymer battery. Li-Polymer is a rechargeable battery that is thinner and less dangerous from explosion than Li-ion. It is more stable, lighter,
less dangerous from explosion than Li-Ion and convenient because there are only low chance of electrolyte lachrymal fluid, natural discharge, and memory effect.
Replacement of battery must be done only through exclusive service centre.
CYANO limits depth of water you can dive for sport diving not more than 40m. Diving under 40m increase the risk of decompression illness and oxygen
intoxication.
The purpose of this device is not for free diving. Please use the free diving modle. Free diving without proper training or safety guarantee is prohibited. If not so,
it can cause serious injuries to deadly situation.

3.Getting Started
Do not use CYANO dive computer before without understanding each mode, and way to adjust settings, and that functions.
3.1 FlowChart
3.1.1 Power ON/OFF
CYANO dive computer is shipped with power off, so after open the box please turn on the power.
If the power doesn't turn on, the device is not the defected, but the battery is discharged, so please turn it on after charge the battery.(refer charging method
3.2.1)

3.1.2 Function and button flow Ⅰ

3.1.3 Function and button flow Ⅱ

3.1.4 Function and button flow Ⅲ

3.2 Settings
3.2.1 Charging
Charging is started when you put the device on the
wireless charging pad.
Estimate time for charging - within 1hour 40mins
you must charge at least 20mins
Operating duration - Diving mode(maximum 10hours)
Clock mode(at least 48hours)
Standby mode(at least 15days)
3.3 Setting from APP
3.3.1 Connecting bluetooth
CYANO APP is available both on IOS / Android
Download from: app Store, Google Play
When the bluetooth has been connected, you can find Divelog and change the settings as pictures below.
After the first bluetooth connection set Protocol setting to make bluetooth connection popup to be disappeared.

3.3.2 Setting up TIME mode
It is how display shows Time mode. It has analog & digital mode with in 4 different colours.
3.3.3 Setting up alarm 3.3.4 Setting up distance / temperature unit
When bluetooth is connected you can change alarm and distance / temperature units settings at setting menu in the App.
3.3.5 Setting up Current time and GPS
You can change current time and GPS settings on Protocol setting at setting menu in the App.

3.3.6 Setting up Display brightness
(adjust in the device)
Brightness adjusted through setting on time mode and through buttons on dive mode
On time mode, you can check
On time mode it can be changed with 1 to 4tier and on dive mode, it is see it through number of icons on top-left of display.
3.3.7 Bluetooth on/off
(adjust in the device)
You turn bluetooth On/Off on setting menu, and when it turned off battery would be saved.
However, note that it is still on the list of bluetooth connection, it will not work properly.

3.3.8 Gauge On/Off
(adjust in the device)
If it is set as gauge mode before start diving, it will automatically enter gauge mode,
and warning phrase and buzzer will not ring, as well algorithm also won't be applied.
3.3.9 Setting up Condition (adjust in the device)
On the settings there are 3 set points; Great, Normal, Pool, and it can be changed by pressing top button.
According to what condition you have set, level of conservatism changes, too.

3.3.10 Sleep Time (adjust in the device)
You can set Sleep Time(time for display to go sleep) 5sec, 10sec, 30sec, or off, and it will help you to manage battery.
3.3.11 Buzzer On/Off (adjust in the device)
You set Buzzer On/Off, and as the results, all buzzers include alert in diving mode and others can be turned off. It will help you to manage battery.
3.3.12 Compss Calibration (adjust in the device)
You can do the compass Clibration on COMPASS in the setting menu. For more information about this please refer to 4.8.1 Compass Calibration.

4. Before diving
Please read this manual thoroughly and understand meanings of what displayed information are and that functions before using the device.
Ensure that user has all the responsibilities for own safety. Proper use of dive computer makes itself a fine tool.
However, no dive computer can replace authorized and proper trainings include basic decompression training.
Nitrox diving may cause more risks including serious injuries and death to divers
Divers who have not acquired qualification from authorized agencies must not use mixed gases other than O2 when diving.
4.1 Buhlmann(ZH-L16C) Algorithm
CYANO uses ZH-L16C, which shows most outstanding performance among the existing algorithm.
The Bühlmann decompression algorithm is a mathematical model (algorithm) of the way in which inert gases enter and leave the human body as the ambient
pressure changes. Various versions, Bühlmann created with his successors, are used to create Bühlmann decompression tables and to compute, in personal dive
computers, no-decompression limits and decompression schedules for dives in real-time. These decompression tables allow divers to plan the depth and duration
for dives and the required decompression stops.
The model assumes perfusion limited gas exchange and multiple parallel tissue compartments and uses an inverse exponential model for in-gassing and
out-gassing, both of which are assumed to occur in the dissolved phase (without bubble formation).
Buhlmann(ZH-L16C) especially is the 16 compartment algorithm with further modification to the middle and faster “a” values, intended for use in dive computers
as a "package". It can be used with almost all low-level processor units but it is less flexible compared to the ZHL16B.

4.2 Emergency ascent
If the emergency situation like breakdown of dive computer happens, please practice the following direction provided by authorized diving center
-STEP1: Immediately ascent calmly higher than 18m of depth.
-STEP2: Slow down ascent rate by 9m/min after pass 18m of depth.
-STEP3: For the best safety, stay still in the depth of deep stop until the air is fully consumed.
After all, Never dive again before you spend 24hours on land.
4.3 limitations of Dive computer
Even though current dive computer provides all the information of decompression, divers must be aware that dive computer cannot catch the divers' physical
changes for each divers have different tendency.

4.4 Nitrox
Nitrox diving decreases risk of decompression illness by reducing nitrogen among mixed gas. However, as amount of air increases relatively, risk of oxygen
intoxication increases. To prevent this, divers should analyse gaseous components and set oxygen percentage in dive computer by own.
4.5 Free diving
This device(CYANO-RF) is not free diving model. Please use free diving model when free dive.
Dive both scuba dive and free dive is not proved and may be exposed to possible unpredicted risks. In any case of breath hold diving could cause Shallow Water
Blackout(SWB). In general, breath hold diving may nitrogen to be built-up in blood and tissues. Thus, free diving after scuba diving within 2hours is prohibited.
and vice versa
4.6 Audible & visual alarms
The alarm system will automatically work for important notice when diving. Alarm works both in audible(deep sound) and visual(warning phrase, flickering), and the
alarm works differently case by case.

4.7 Activating diving mode
When it reaches 0.5m under water, the dive computer will automatically start diving mode.
However, it is recommended to check out Oxygen percentage(O2%), personal settings, and battery condition before diving.
4.7.1 Setting up NITROX mode
Nitrox can be set up at EAN in setting menu before diving.
CYANO limits maximum depth for sport diving to within 40m. Diving exceeding over 40m increases the exposure of Decompression illness and oxygen
intoxication.
4.8 pre-checks
- List below should be checked out
Is it suitable mode to dive? (Air/Nitrox/Gauge mode)
Is there enough remained battery?
Have compass Calibration done?
Is the unit correct? (m/ft) - check on App
Are personal adjustment, settings correct? (condition, EAN, and etc)

4.8.1 Compass
Because of the compass works differently in every region and altitude, please do the compass calibration before diving to get accurate results.
In the detailed setting, enter the compass menu and spin the device around within 2secs to complete Calibration correctly, before diving.
After 2 secs, it will be back to previous menu before.
4.8.2 Battery power indication
Battery condition is affected by oxidation inside the battery. If dive computer is neglected for long time, battery warning can be appeared, no matter the amount
of battery remainder. At the similar aspect, if the dive computer is exposed to low temperature battery warning can be appeared, too. When battery is low as it
showed in picture below, battery should be started charging immediately.
4.8.3 Diving at high altitude
It is recommended not to travel high altitude area after diving at ground level for amount of nitrogen in body may be changed.
Also, If you want to dive at high altitude, you should stay at least 3 hour at the level where you've done the previous diving.
in case of high altitude diving, decompression time may be shorten depends on the altitude value