The Cressi Leonardo is a multifunctional dive computer designed for sport diving, offering depth tracking, decompression status, and ascent rate monitoring with a user-friendly interface.
Features and Specifications
The Cressi Leonardo features a modified Haldane algorithm with nine tissues, supporting Air, Nitrox, and Gauge modes. It includes a high-resolution display and intuitive navigation for divers.
2.1 Overview of Features
The Cressi Leonardo is a versatile dive computer equipped with advanced features tailored for recreational diving. It incorporates the RGBM algorithm, developed in collaboration with Bruce Wienke, ensuring precise decompression calculations. The device supports multiple modes, including Air, Nitrox, and Gauge, making it adaptable for various diving needs. Its user-friendly interface features a single button for navigation, similar to classic Nokia phones, allowing easy access to functions. The high-resolution display provides clear visibility underwater, while the durable design ensures long-term reliability. Additional features include dive logging, safety factor settings, and pre-dive checks, enhancing both convenience and safety. With its sleek design and robust performance, the Cressi Leonardo is a popular choice among divers seeking a reliable and feature-rich diving companion.
2.2 Key Specifications
The Cressi Leonardo boasts an array of technical specifications that enhance its performance and versatility. It operates on the RGBM algorithm, supporting depths up to 120 meters and dive times of 1 second intervals. The device accommodates both Air and Nitrox modes, with FO2 adjustable between 21% and 50% and PO2 between 1.2 and 1.6 bar. The high-resolution display ensures clear readability, while the durable design features a stainless steel button and a mineral glass lens. Battery life is estimated at 60-70 hours in dive mode, with a user-replaceable battery. Weighing just 120 grams, the Leonardo is lightweight and compact, making it an ideal choice for divers seeking a reliable and feature-packed device.
2.3 RGBM Algorithm
The Cressi Leonardo utilizes an advanced RGBM (Reduced Gradient Bubble Model) algorithm, developed in collaboration with renowned expert Bruce Wienke. This algorithm is based on the Haldane model but incorporates additional safety factors to minimize the risk of decompression sickness. It calculates safe ascent rates and decompression stops by monitoring tissue saturation across 9 tissue compartments. The algorithm supports multiple dives over several days, adapting to the diver’s physiology and previous dive history. This ensures personalized and accurate decompression planning, making it suitable for both recreational and technical diving applications. The Leonardo’s RGBM algorithm is a key feature that enhances safety and diving efficiency.
2.4 Design and Build Quality
The Cressi Leonardo boasts a robust and ergonomic design, making it both durable and user-friendly. Its sleek, compact body is built with high-quality materials to withstand the rigors of frequent diving. The computer features a sharp and clear LCD display that provides excellent readability underwater. The single-button navigation system is intuitive, allowing divers to easily access and adjust settings. The design emphasizes functionality, with a focus on simplicity and reliability. Built to last, the Leonardo is designed to endure harsh marine environments while maintaining its aesthetic appeal. Its lightweight and compact size make it a practical choice for divers seeking a reliable and stylish diving companion.
2.5 Additional Features
The Cressi Leonardo offers a range of additional features that enhance the diving experience. It includes a logbook function to track dive history, allowing divers to review their previous dives. The computer also features a safety factor setting, enabling divers to adjust their conservatism level. The RGBM algorithm ensures safe decompression calculations for multiple dives over several days. Additionally, the Leonardo supports user-friendly navigation with a single-button interface, making it easy to access and adjust settings. The device also includes a backlight for improved visibility in low-light conditions. These features make the Leonardo a versatile and reliable choice for both recreational and technical divers, providing a comprehensive tool for safe and enjoyable underwater adventures.
How to Use the Cressi Leonardo
The Cressi Leonardo is easy to operate, with a single-button interface for navigating menus and settings. Turn it on, set your parameters, and it automatically starts tracking your dive, providing real-time depth, time, and decompression information.
3.1 Getting Started
To begin using the Cressi Leonardo, first ensure the device is turned on. Set your preferred units of measurement and select the appropriate gas type (Air or Nitrox) based on your dive plan. Check the default settings, such as the oxygen percentage and maximum depth limits, and adjust them if necessary. Before your first dive, familiarize yourself with the single-button navigation, which allows you to scroll through menus and adjust settings. The device automatically activates when submerged beyond 1.2 meters (4 feet) but can also be manually turned on for pre-dive checks. Always verify the oxygen setting and safety factor to ensure a safe and enjoyable diving experience.
3.2 Basic Operations
The Cressi Leonardo operates with a single button, allowing divers to navigate through its intuitive menu system. Short presses scroll through options, while long presses select or adjust settings. Upon entering the water, the device automatically activates when submerged beyond 1.2 meters (4 feet). During the dive, it continuously monitors depth, time, and decompression status, providing real-time updates. The ascent rate is tracked to ensure safety, and surface interval times are recorded for repeated dives. The device also features manual mode for gauge-style operation, ideal for technical diving. Always ensure the oxygen setting and safety factor are correctly set before descending. Regular checks of the display ensure a smooth and safe diving experience.
3;3 Navigation and Menus
The Cressi Leonardo features a straightforward single-button navigation system, making it easy to access various functions and settings. Short presses scroll through menu options, while long presses select or adjust settings. The main menu includes sections for pre-dive checks, settings, dive history, and utility functions. Divers can navigate through options like adjusting the oxygen setting, safety factor, and units of measurement. The device also includes a pre-dive display showing the current oxygen setting and safety factor, ensuring everything is set correctly before the dive begins. The intuitive design allows users to quickly access essential information, making it user-friendly for divers of all experience levels.
3.4 Pre-Dive Setup
Before each dive, the Cressi Leonardo requires a few essential setup steps to ensure safe and accurate performance. First, verify the oxygen setting (FO2) matches your tank’s gas mix, adjustable between 21% and 50%. Check the partial pressure (PO2) setting, which should be between 1.2 and 1.6 bar. Ensure the safety factor is appropriately set, as it affects decompression calculations. Review the battery level and confirm all settings align with your dive plan. The device automatically activates when submerged beyond 1.2m/4ft, but manual activation is recommended to review settings. Proper pre-dive setup ensures accurate tracking of depth, time, and decompression, maximizing safety and efficiency during your dive.
Dive Modes
The Cressi Leonardo offers multiple dive modes, including Air, Nitrox, Gauge, and Plan, catering to different diving needs and preferences for recreational and technical diving experiences.
4.1 Air Mode
The Air Mode on the Cressi Leonardo is designed for dives using standard air (21% oxygen). This mode is ideal for recreational divers, providing essential data like depth, dive time, and decompression status. It utilizes the Cressi RGBM algorithm, which ensures safe decompression calculations and prevents excessive nitrogen buildup. The interface is user-friendly, displaying real-time information and alerts for ascent rates and safety stops. Divers can set a maximum depth limit, and the computer automatically calculates the safest ascent profile. This mode is perfect for divers who prefer simplicity while maintaining safety during their underwater adventures. It is a reliable choice for everyday diving activities.
4.2 Nitrox Mode
The Nitrox Mode on the Cressi Leonardo allows divers to use enriched air mixes with oxygen levels between 21% and 50%. This mode is ideal for extending bottom time and reducing nitrogen absorption. The computer calculates decompression stops based on the selected mix, ensuring safe ascent profiles. Divers can adjust the FO2 (fraction of oxygen) and PO2 (partial pressure of oxygen) settings to customize their dive plan. The RGBM algorithm adapts to Nitrox dives, providing accurate decompression information. The interface displays real-time data, including depth, time, and decompression status, making it easy to monitor the dive. This mode is perfect for Nitrox-certified divers seeking to optimize their diving experience while maintaining safety.
4.3 Gauge Mode
The Gauge Mode on the Cressi Leonardo allows divers to use the device as a basic depth gauge and timer, without decompression calculations. This mode is ideal for shallow dives or when a full dive computer isn’t necessary. It provides essential data such as current depth, dive time, and ascent rate, while deactivating advanced features like decompression tracking. The interface remains user-friendly, displaying real-time information clearly. Gauge Mode is perfect for divers who want a simplified experience or for use in technical diving scenarios where a secondary device is preferred. It ensures versatility for divers of all levels while maintaining the Leonardo’s reliability and accuracy.
4.4 Plan Mode
The Plan Mode on the Cressi Leonardo allows divers to pre-plan dives by setting depth and time parameters. This mode enables users to create a detailed dive profile, including maximum depth, bottom time, and safety stops. The computer calculates the optimal ascent rate and decompression stops based on the selected parameters, ensuring a safe and efficient dive. Divers can review the planned profile before entering the water, making adjustments as needed. Plan Mode is particularly useful for technical diving or when following specific dive plans. It provides a clear overview of the dive’s progression, helping divers stay within safe limits and adhere to their planned itinerary. This feature enhances dive preparation and execution for divers of all levels.
Safety Guidelines and Decompression
The Cressi Leonardo ensures safe diving with its advanced RGBM algorithm, real-time decompression monitoring, and ascent rate tracking, promoting adherence to safe diving practices and preventing decompression sickness.
5.1 Safety Guidelines
The Cressi Leonardo dive computer is designed to enhance diving safety through its advanced features and clear guidelines. Always ensure the device is turned on and parameters are checked before each dive. The computer monitors depth, time, and decompression status, providing real-time alerts for safe ascent rates and surface intervals. Divers should avoid exceeding the recommended depth and follow the device’s decompression stop instructions carefully. Regular checks of the oxygen setting (PO2) are essential, especially when switching between air and nitrox. Proper pre-dive planning and adherence to the safety factor ensure a low-risk diving experience. Never ignore error messages or alerts from the device.
5.2 Decompression Information
The Cressi Leonardo provides detailed decompression information using its advanced RGBM algorithm, which calculates safe ascent rates and decompression stops. The algorithm, developed in collaboration with Bruce Wienke, considers multiple dives over several days, ensuring accurate decompression schedules. Divers can monitor their decompression status in real-time, with the device alerting them to necessary stop depths and durations. The computer also tracks ascent rates, ensuring they remain within safe limits to prevent decompression sickness. Proper adherence to the displayed decompression stops and ascent rate guidelines is essential for safe diving practices. Always monitor the screen during ascent and follow the device’s instructions carefully.
5.3 Ascent Rate Monitoring
The Cressi Leonardo ensures safe ascent rates by monitoring a diver’s ascent speed in real-time. The device alerts the diver if the ascent exceeds the recommended rate, helping to prevent decompression sickness. The computer calculates and displays the maximum allowable ascent speed based on the current depth and dive profile. This feature ensures that divers ascend gradually and safely, adhering to decompression guidelines. The Leonardo also provides visual and audible warnings if the ascent rate becomes too fast, prompting the diver to slow down. This monitoring system is crucial for maintaining diver safety and preventing decompression-related injuries during the ascent phase of a dive. Always follow the device’s ascent rate guidelines for a safe diving experience.
5.4 Surface Interval Tracking
The Cressi Leonardo dive computer includes a surface interval tracking feature to monitor the time spent on the surface between dives. This feature is essential for ensuring safe decompression and preventing diving-related injuries. The device calculates the necessary surface interval based on the depth and duration of the previous dive, ensuring the diver adheres to safe practices. The Leonardo displays the remaining surface interval time and provides visual and audible alerts if the diver fails to meet the required interval. This ensures the diver has adequate time to off-gas inert gases before the next dive. Proper surface interval tracking is crucial for maintaining diver safety and preventing decompression sickness. The Leonardo’s surface interval tracking is an indispensable tool for safe and enjoyable diving experiences.
Maintenance and Care
Regularly clean the Cressi Leonardo with fresh water and mild soap to prevent damage. Avoid exposure to chemicals or extreme temperatures. Dry thoroughly after dives and store in a protective case. Always follow the manual’s guidelines for proper care and longevity.
6.1 General Maintenance
Proper maintenance ensures the longevity and accuracy of the Cressi Leonardo. After each dive, rinse the device with fresh water to remove dirt and salt deposits. Avoid exposing it to chemicals, direct sunlight, or extreme temperatures. Regularly inspect the screen and buttons for damage or wear. Store the device in a protective case when not in use. Follow the user manual’s guidelines for cleaning and care. Always ensure the device is dry before storing to prevent moisture damage. Perform software updates as recommended by Cressi to maintain optimal functionality. Regular battery checks and replacements should be done as specified in the manual to avoid sudden malfunctions during dives.
6.2 Battery Replacement
The Cressi Leonardo uses a 3V CR2430 lithium battery, ensuring extended life and reliable performance. To replace the battery, turn off the device first. Open the battery compartment by unscrewing it with a small coin or screwdriver. Carefully remove the old battery and insert the new one, ensuring the positive terminal faces upwards. Avoid touching the battery terminals to prevent contamination. After replacing, tighten the compartment securely. The device will automatically reset, but it is recommended to recalibrate it for accuracy. Dispose of the old battery responsibly. Always refer to the user manual for detailed instructions and contact Cressi support if issues arise. Proper battery replacement ensures optimal functionality during dives.
6.3 Software Updates
Software updates for the Cressi Leonardo are essential to ensure optimal performance, enhanced features, and compatibility. Cressi periodically releases updates to improve functionality and address any technical issues. To update your device, connect it to a computer using the provided USB cable and download the Cressi software from the official website. Follow the on-screen instructions carefully to complete the update process. Ensure the device is fully charged before starting. Avoid interrupting the update, as it may cause system errors. Once completed, the device will restart automatically. Always refer to the user manual for detailed instructions or contact Cressi support if you encounter any issues. Regular updates ensure your Leonardo remains accurate and reliable for safe diving experiences.
Troubleshooting Common Issues
The Cressi Leonardo manual provides solutions for common issues, such as error messages or operational problems. Refer to the troubleshooting section for guidance or contact Cressi support.
7.1 Common Issues
The Cressi Leonardo is a reliable dive computer, but users may encounter issues such as error messages or operational problems. Common issues include display malfunctions, incorrect depth readings, or battery life concerns. If the device fails to turn on, ensure the battery is properly installed or replaced. For inaccurate depth measurements, recalibrate the unit according to the manual. Additionally, some users report issues with the RGBM algorithm calculations, which may require software updates. Always consult the user manual or contact Cressi support for assistance. Proper maintenance and regular software updates can prevent many of these issues, ensuring optimal performance during dives.
7.2 Error Messages and Solutions
The Cressi Leonardo may display error messages such as “ERROR” or “NO FLOW” during operation. These typically indicate issues like sensor malfunctions or software glitches. To resolve these, restart the device by pressing and holding the button for 10 seconds. If the issue persists, perform a factory reset as outlined in the manual. Additionally, ensure the device is updated with the latest software version. For decompression-related errors, verify that the RGBM algorithm settings are correctly configured. If problems continue, contact Cressi support for professional assistance. Regular maintenance and software updates can help prevent these issues, ensuring smooth operation during dives. Always refer to the user manual for detailed troubleshooting steps.
User Manual and Documentation
The Cressi Leonardo user manual provides comprehensive guidance on features, settings, and troubleshooting. It is available for free download online, ensuring easy access to detailed instructions.
8.1 User Manual Overview
The Cressi Leonardo user manual is a comprehensive guide designed to help divers maximize their experience with the device. It covers all essential features, including dive modes, settings, and safety protocols. The manual provides detailed instructions for navigating menus, pre-dive setup, and post-dive analysis. Additionally, it includes troubleshooting tips and maintenance advice to ensure optimal performance. Available for free download, the manual is accessible in multiple languages, making it convenient for global users. It serves as an invaluable resource for understanding the device’s capabilities and ensuring safe, efficient diving practices. By following the manual, users can fully utilize the Cressi Leonardo’s advanced functions.
8.2 Downloading the Manual
The Cressi Leonardo manual is readily available for download from Cressi’s official website. Users can access the PDF document in multiple languages, ensuring global accessibility. To download, visit the Cressi website, navigate to the “Manuals & Software” section, and select the Leonardo model. The manual is free and requires no registration, making it convenient for divers to obtain. It is essential for understanding the device’s features, settings, and troubleshooting. By downloading the manual, users can ensure they are fully informed about the Cressi Leonardo’s capabilities and safety guidelines, maximizing their diving experience. This resource is indispensable for both novice and experienced divers.
The Cressi Leonardo is a reliable and versatile dive computer that offers advanced features for both recreational and technical diving. Its user-friendly interface, combined with the sophisticated RGBM algorithm, ensures safe and efficient diving experiences. The comprehensive manual provides detailed guidance, making it easy for divers to maximize the device’s capabilities. With its sleek design and robust build quality, the Leonardo is a valuable companion for underwater adventures. Whether you’re a novice or an experienced diver, this computer delivers precise data and supports your diving goals. The Cressi Leonardo stands out as a top choice for divers seeking performance, safety, and ease of use.
Frequently Asked Questions (FAQs)
Q: What modes does the Cressi Leonardo support?
A: It supports Air, Nitrox, and Gauge modes, catering to various diving needs.
Q: What algorithm does the Leonardo use?
A: It uses the Cressi RGBM algorithm, developed with Bruce Wienke, ensuring safe decompression calculations.
Q: Is the Leonardo easy to use?
A: Yes, its intuitive interface and single-button navigation make it user-friendly for divers of all levels.
Q: Can the Leonardo track multiple dives?
A: Yes, it stores dive history and allows for desaturation resets between dives.
Q: Does the Leonardo require regular software updates?
A: Yes, updates are recommended to maintain optimal performance and access new features.
Q: How long does the battery last?
A: The battery life is designed to be long-lasting, but replacement is simple when needed.
These FAQs address common inquiries about the Cressi Leonardo, helping users understand its capabilities and maintenance.