CXR-I Dive Computer • TABLE OF CONTENTS IMPORTANT WARNINGS 3 DISCLAIMER 3 PART I • 1. INTRODUCTION 4 4 1.1. 1.2. 1.3. 1.4. 1.5. 1.6. 1.7. 1.8. 1.9. GLOSSARY OPERATING MODES TURNING ON CXR-I AND MAIN MENU RECHARGEABLE BATTERY 1.4.1. CHARGING THE BATTERY COMMUNICATING VIA USB CABLE OR BLUETOOTH BUTTON OPERATION IN CASE OF EMERGENCY (ICE) MOUNTING AND PAIRING OF THE TANK MODULE (OPTIONAL) TURNING OFF CXR-I 4 5 5 5 5 5 6 6 6 6 • 2. SET DIVE 7 2.1. 2.2. 7 7 7 2.3. 2.4. 2.5. 2.6. 2.7. 2.8. 2.9.
• IMPORTANT WARNINGS No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form without the written permission of Mares S.p.A. Mares adopts a policy of continuing improvement, and therefore reserves the right to make changes and enhancements to any of the products described in this manual without notice. Under no circumstances shall Mares be held responsible for any loss or damage sustained by third parties deriving from the use of this instrument.
CXR-I Dive Computer • PART I • 1. INTRODUCTION 1.1. GLOSSARY AGF: Alternate gradient factor AIR: Air dive ASC: Total ascent time, the time it takes to perform the ascent from your current depth to the surface in a decompression dive, including all decompression stops and assuming an ascent rate of 10m/min or 33ft/min. ASC + X: The overall ascent time inclusive of all decompression stops if the dive is extended by X minutes at the current depth.
1.2. OPERATING MODES The functions of the CXR-I computer can be grouped into three categories, each corresponding to a specific mode of operation: Once in the main menu, you will see the familiar look of an icon-based user interface.
CXR-I Dive Computer 1.6. BUTTON OPERATION 1.7. IN CASE OF EMERGENCY (ICE) - Place CXR-I at about 15 cm / 6 inches from the tank module as shown in Figure 5. CXR-I has four buttons. These buttons allow you to access menus and change settings while in surface mode. During the dive they switch displays, call up the compass or the map function, and allow to display further information on the computer screen.
• 2. SET DIVE MENU Description SET DIVE MODE Allows you to choose between air, nitrox, trimix and bottom timer mode. ALGORITHM Allows you to set main and alternate gradient factors, personalization levels, and more. GAS INTEGRATIO N Allows you to synchronize your CXR-I with optional tank modules and to define all parameters concerning gas integration (tank volume, operating tank pressure, tank reserve and more). WARNINGS Allows you to define and activate certain warnings individually.
CXR-I Dive Computer 2.2.3. PERSONALIZATION This menu allows you to define additional conservatism in a way similar to going from R0 to R1, R2 or R3 but in a more personal way. It comprises two submenus, labelled MAIN and ALTERNATE, each of which has three submenus, called PHYSIO, DIVE, I TODAY. The values set in each menu are subtracted from the respective MAIN GF and ALTERNATE GF value yielding the values used by CXR-I for the decompression calculations.
2.4. WARNINGS 2.4.1. MAX DEPTH CXR-I allows you to set an alarm at a depth independent of the MOD. The default value is OFF. Using the and buttons you can set it between 10m / 30ft and up to just shy of the MOD, in 1m / 5ft increments. Upon reaching the depth defined in this alarm, the message MAX DEPTH REACHED appears on the screen and stays there until you ascend above the set limit. 2.4.2. DIVE TIME CXR-I allows you to set a time alarm, triggering also a warning at half of the set time limit.
CXR-I Dive Computer • 3. SET COMPUTER MENU Description SET COMPUTER LANGUAGE Allows you to set the language for the user interface, all menus and warning messages during the dive. UNITS Allows you to choose between metric (m, °C, bar) and imperial (ft, °F, psi) units. CLOCK Allows you to set the date, time, time zone shift when travelling, and a wake-up alarm. Allows you to set the BRIGHTNESS maximum brightness of the backlight.
• PART II • 8. DIVING WITH CXR-I 8.1. A FEW WORDS ABOUT NITROX Nitrox is the term used to describe breathing gases made of oxygen-nitrogen mixes with an oxygen percentage higher than 21% (air). Because Nitrox contains less nitrogen than air, there is less nitrogen loading on the diver’s body at the same depth as compared to breathing air. However, the increase in oxygen concentration in Nitrox implies an increase in oxygen partial pressure in the breathing mix at the same depth.
CXR-I Dive Computer WARNING If the ascent rate exceeds 120% of the allowed value over a depth change of more than 20m/66ft, due to possible harmful bubble formation, CXR-I locks the computer for 24 hours in order to prevent you from diving again. You can disable this function in the menu ASCENT VIOLATION. This should only be done by highly experienced divers, who take full responsibility for the consequences of this action. 8.5.2. MOD/ppO 2 WARNING - The MOD should not be exceeded.
dive. Otherwise, it will turn on automatically within 20 seconds of having reached a depth of 1.2m/4ft. 9.1. With CXR-I you have a choice of how the information is presented on the display. The depth is given in 10cm resolution until 99.9meters, after which it is given in 1m resolution. When the depth is displayed in feet, the resolution is always 1 foot. At a depth shallower than 1.2m/4ft, the display shows ---. Maximum possible depth is 150m/492ft.
CXR-I Dive Computer WARNING During all dives, perform a safety stop between 3 and 5 meters/10 and 15 feet for 3 minutes, even if no decompression stop is required. 9.3. FUTURE DECOMPRESSION In case of a decompression dive, the sequence also features ASC+5. The value shown represents the total ascent time if you were to remain at the current depth for an additional 5 minutes.
9.8. VIEWING MAPS DURING A DIVE module, the screen shows the tank pressure as well (Fig. 31). To call up the map selected under SET DIVE/LINKED MAP, press from the decompression summary table. The map will remain on the display for 10 seconds, after which the screen reverts to dive information. You can press to return to the main screen before the 10 seconds have elapsed (Fig. 29). NOTE - In the event of an alarm, CXR-I automatically switches back to the standard display.
CXR-I Dive Computer switch screen appear, which shows all active gases (Fig. 35). NOTE - If you dive using just one gas, select G1 and deselect the other two. NOTE You can reach this screen at any time during the dive, for instance to check on the tank pressure and the planned switch point of G2 and G3. - For dives with two gases, select G1 and G2 and deselect the third. - When enabling G2 and G3, you must first define G2 and then G3. - You cannot activate G3 without first having activated G2.
• 13. TAKING CARE OF CXR-I Oxygen concentration: adjustable between 21% and 99%, ppO2max range between 1.2 and 1.6bar - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. 13.1.
CXR-I Dive Computer NOTE If you notice signs of moisture on the inner wall of the mineral glass, take your CXR-I immediately to an authorized Mares service center. WARNING The mineral glass is not exempt from scratches resulting from improper use. 14.2. HOW TO FIND THE PRODUCT SERIAL NUMBER AND ELECTRONIC ID The serial number is laser-engraved on the back side of CXR-I, in front of the front attachment point of the strap. To see the electronic ID, enter the INFO menu.
code 44201490 - 0.000- 09/18 - Artbook 14884/18 Mares S.p.A. - Salita Bonsen, 4 - 16035 RAPALLO - ITALY - Tel. +39 01852011 - Fax +39 0185201470 www.mares.com 2016/425: www.mares.
