Crest Audio CR-1 User Manual
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Crest Audio CR-1 User Manual

Crest Audio CR-1 User Manual

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CREST CR-1
English User Guide
Applicable SW version: 1022
Version number: V 10
Update date: 2025/01/24

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Summary of Contents for Crest Audio CR-1

  • Page 1 CREST CR-1 English User Guide Applicable SW version: 1022 Version number: V 10 Update date: 2025/01/24...

  • Page 2: Table Of Contents

    CR-1 English User Guide Contents 1. Diving Safety Guide 2. Getting Started Guide 2.1 Buttons 2.2 Power On and Off 2.3 Icons 2.4 Screen 2.5 Low Battery 2.6 Battery Replacement 2.7 Maintenance 3. Time Screen 4. Data Screen 5. Plan Screen 6.

  • Page 3: Diving Safety Guide

    1. Diving Safety Guide Please ensure that you fully understand how to use your dive equipment and the CR-1 dive function and what the information displayed on this product means. If you have any questions about this product, please always contact your CREST dealer for answers prior to your diving activity and use.
  • Page 4 This product is factory tested to a depth of 100 m/330 ft and is intended for recreational diving only. CREST strongly recommends that recreational divers do not exceed the maximum depth of 40 m/131 ft specified for recreational diving (air diving), or the maximum depth allowed by your dive training, and do not use it in diving environments where you are not trained to dive within the depth limits of your training.
  • Page 5 accepted as an integer, please do not remove the decimal point by yourself when inputting. The recommended input method is the unconditional rounding method, for example, if your cylinder measurement is 31.8%, please input the oxygen concentration value: 32%. The decimal point will be underestimated and will result in incorrect calculation of the dive information, which may lead to life threatening divers.

  • Page 6: Getting Started Guide

    2. Getting Started Guide 2.1 Buttons Button Function 1. Switch screens L (Left Button) 2. Enter/Change submenus 1. Turn on backlight R (Right Button) (Only on Time/Data/Dive pages) 2. Enter/Change submenus 2.2 Power On and Off Manual Power On : Press any button to turn on the device. During bootup, a countdown screen will be displayed.

  • Page 7: Icons

    Forced Restart Press and hold both buttons simultaneously for 7 seconds to force a restart of the device. 2.3 Icons Icon Description Low Battery ① Nitrogen/Oxygen accumulation ② Ascent rate ③ Ascent Rate Segment Description > 18m (60ft) < 18m (60ft) Seg.

  • Page 8: Screen

    2.4 Screen The CR-1 has seven main screens, switched using the left button. The screens cycle in the following order: Time Screen (TIME) → Data Screen (DATA) → Dive Plan (PLAN) → Last Dive Record (LAST) → Dive Log (LOG) → History Record (HIST) → Settings (SET).

  • Page 9: Battery Replacement

    Do not use uncertified or unknown products; damage caused by such batteries will void the warranty and repair rights. Turn the CR-1 dive computer over and locate the Battery Compartment. Insert the Ring Opener of the Battery Replacement Tool into the two Tool Holes of the Hatch Ring and rotate it clockwise about 10 degrees to loosen the Hatch Ring.
  • Page 10 humidity, easy to drop, heavy impact, etc. If the product is not used for a long time, please make sure that the power supply is at least 25%, and check and charge it regularly. If the battery capacity and voltage are not used for a long time, it may cause irreversible damage to the battery.

  • Page 11: Time Screen

    3. Time Screen Screen Functions Time Screen Description: 8.23: Date 3:28: Surface rest time 10:08: Current time Please note: Before starting the diving activity, please make sure that the required setting information of this product has completed the relevant settings, and return to the watch mode, toTime Screen confirm that the product has been correctly powered on and then enter the water, in order to correctly enter the water and...
  • Page 12 No Fly / No Dive (After Dive Mode) Access: Appears in No Fly/No Dive status after diving, and it will appear until the No Fly/No Dive time ends. Description: Left 17:59: No Fly Time If this time, you are still within the No Fly time after a dive, so do not travel by air or go to higher altitudes.

  • Page 13: Data Screen

    4. Data Screen Screen Functions Data Screen Access: Press the left button once from the Time Screen to enter Data Screen. Description: 26 °C: Current temperature SEA：Current altitude The icons and their corresponding ranges are as follows: SEA: 0 - 913 m(0 - 3000 ft) L-2: 914 - 1524 m(3001 - 5000 ft) L-3: 915 - 2133 m(5001 - 7000 ft) L-4: 2134 - 2743 m(7001 - 9000 ft)

  • Page 14: Plan Screen

    5. Plan Screen Screen Functions Plan Screen Access: Press the left button twice from the Time Screen to enter Plan Screen. (Enterable 10 minutes after the dive ends). Operation: Press the right button to select the planned depth. Depth can be increased in increments of 3 meters (10 feet).

  • Page 15: Last Screen

    6. Last Screen Screen Functions Last Screen Access: Press the left button three times from the Time Screen to enter Last Screen. (Enterable 10 minutes after the dive ends). Description: 13:05: Start time of the last dive 13:43: End time of the last dive : Maximum residual nitrogen accumulation status from the last dive.

  • Page 16: Log Screen

    7. Log Screen Screen Functions Log Screen Access: Press the left button four times from the Time Screen to enter Log Screen. (If within 10 minutes of ending a dive, press the left button twice from the No Fly screen to enter). Operation: 1.
  • Page 17 Screen#2： 13:05: Start time 13:43: End time Nitrox Mode Screen#2: 0.85: Maximum PO2 Log Screen - Screen#2 : Nitrox Icon Note: The right button on this page is used to select the dive log, so the backlight function is not activated.

  • Page 18: History Screen

    8. History Screen Screen Functions History Screen Access: Press the left button five times from the Time Screen to enter History Screen. (Enterable 10 minutes after the dive ends). Operation: On the History Screen, you can view the maximum depth and total dive time from all dive logs.

  • Page 19: Set Screen

    9. Set Screen Screen Functions Set Screen Access: Press the left button six times from the Time Screen to enter Set Screen. (Enterable 10 minutes after the dive ends). Operation: Press the right button on the set screen to navigate through Settings 1 to Settings 7. There are seven settings options.
  • Page 20 Set 1 Access: Press the right button once on the Set Screen to access Set 1, then press the left button to enter the dive mode settings. Operation: Press the right button to select the setting value, then press the left button to confirm the setting value.
  • Page 21 Set 2 Access: Press the right button twice on the Set Screen to access Set 2, then press the left button to enter the dive alarm settings. Operation: Press the right button to select the setting value, then press the left button to confirm the setting value.
  • Page 22 Set 3 Access: Press the right button three times on the Set Screen to access Set 3, then press the left button to enter the units settings. Operation: Press the right button to select the setting value, then press the left button to confirm the setting value.
  • Page 23 Set 4 Access: Press the right button four times on the Set Screen to access Set 4, then press the left button to enter the time settings. Operation: Press the right button to select the setting value, then press the left button to confirm the setting value.
  • Page 24 Set 5 Access: Press the right button five times on the Set Screen to access Set 5, then press the left button to enter the dive settings. Operation: Press the right button to select the setting value, then press the left button to confirm the setting value.
  • Page 25 Set Screen - Set5 - Water Type Set 6 Access: Press the right button six times on the Set Screen to access Set 6, then press the left button to enter the log clearing. Operation: Press the left or right button to select the setting value.
  • Page 26 Set 7 Access: Press the right button seven times on the Set Screen to access Set 7, then press the left button to enter the tissue clearing. Operation: Press the left or right button to select the setting value. There will be two confirmation screens.

  • Page 27: Dive Mode

    10. Dive Mode 10.1 Air / Nitrox Mode Screen Functions Air / Nitrox Mode - Underwater Main Screen Description: 21.6: Maximum depth 0:11: Dive time(hr:min) 20.6: Current depth 20: NDL time (Non-Decompression Limit) Will show 99 when NDL exceeds 99 minutes. Air Mode - Underwater Main Screen : Nitrox Icon : Ascent speed...
  • Page 28 Air / Nitrox Mode - Second Screen Access: Press the left button once on the underwater main screen to access this screen, then press the left button again to return to the underwater main screen. Description: 25.6 °C: Water temperature 13:01: Current time Air / Nitrox Mode - Second Screen 20.6: Current depth...
  • Page 29 Air / Nitrox Mode - Safety Stop (When the NDL has not been exceeded) Description: 5.0: Recommended safety stop depth 2:48: Recommended safety stop time(min:sec) 4.8: Current depth 99: NDL time Safety Stop: When divers ascend to 5m (16.4 ft), the diver computer will start a Safety Stop countdown automatically.
  • Page 30 Air / Nitrox Mode - Deep Stop (When the NDL has not been exceeded) Access: Set deep stop in Set3. Description: 13.0: Recommended deep stop depth 2:00: Recommended deep stop time 14.0: Current depth 67: NDL time Deep Stop: When divers ascend to recommended stop depth, the diver computer will start a Deep Stop countdown automatically, and the stop time is 2 minutes.
  • Page 31 Air / Nitrox Mode - Deco Stop Description: 9.0: Decompression stop depth. 0:18: Decompression stop time (min:sec) 9.0: Current depth 5: Time To Surface time (TTS) Deco Stop: When divers ascend to recommended stop depth, the diver computer will start a Deco Stop countdown automatically. During the stop, the top will alternately display: Please remain at the stop depth the entire duration indicated by the countdown timer if...
  • Page 32 Air / Nitrox Mode - CNS Warning Description: CNS 80% - 49.1: Maximum depth 0:23: Dive time(hr:min) 39.0: Current depth 12: NDL time Air / Nitrox Mode - CNS 80% : CNS accumulation status CNS 100% - 100: CNS 100% SAt: Saturation : When the CNS accumulation reaches 80%, the top will display this icon.

  • Page 33: Gauge Mode

    Air / Nitrox Mode - No Dive Access: Appears in No Fly / No Dive status after diving, and it will remain until the No Fly / No Dive time ends. Description: Left 23:59: No Fly Time If this time, you are still within the No Fly time after a dive, so do not travel by air or go to higher altitudes.
  • Page 34 Gauge Mode - Second Screen Access: Press the left button once on the underwater main screen to access this screen, then press the left button again to return to the underwater main screen. Description: 21.2 °C: Water temperature 10:58: Current time Gauge Mode - Second Screen 40.6: Current depth Gauge Mode - Return to the Surface...
  • Page 35 Decompression Diving Warning for Recreational Divers: Decompression options provided by dive computer and presented in this user manual should only be used as emergency procedures when a NDL limit has been accidentally surpassed. It is important to remember that decompression stops are driven by both depth and NDL violations.

  • Page 36: Serial Number And Firmware Version

    11. Serial Number and Firmware Version Serial Number and Firmware Version Description: During the boot up countdown screen, press the right button twice to view the serial number and firmware version. Bootup Countdown Screen: When the dive computer is turned on, it will display a countdown screen.

  • Page 37: Synchronization And App

    12. Synchronization and APP Synchronization and APP Description: 1. Please download Dive Story Pro App from App Store or Google Play and register/login your account. 2. Turn on the Bluetooth of your mobile phone. 3. Open the Homepage of the APP and click on “Add Device”...

  • Page 38: Disclaimer

    13. Disclaimer 13.1 User's Responsibility This device is intended for recreational use only. CREST CR-1 is not applicable for measurement data or use specifications that require compliance with occupational or industrial requirements. 13.2 About Flying After Diving The no-fly time is displayed in watch mode, with an icon of the aircraft at the bottom of the screen.

  • Page 39: Limited Liability Warranty

    14. Limited Liability Warranty CREST Dive Computer is covered by CREST’s limited warranty. ● CREST provides a limited product warranty to the purchaser of a dive computer watch and dive computer watch accessories (hereinafter referred to as the Product). ● During the period of the Product Warranty, improvements will be made at CREST or CREST authorized distributor or dealer location for possible defects in the hardware of the Product in accordance with the terms of this Warranty.
  • Page 40 4. damage to the internal settings, data content or other data of the Dive Computer Meter. Whether it is the user’s manual that comes with the product or obtained by download, or software supplied by a third party, or even the user’s own data; problems arising from installation, assembly, or transportation.

  • Page 41: Contact Crest

    16. Copyright Statement The contents of this document are the property of CREST, including the words and graphics CR-1, which are registered or unregistered trademarks of the Company. Although every effort has been made to ensure the completeness and correctness of the contents of this document, we cannot guarantee 100% accuracy.

  • Page 42: Appendix

    17. Appendix 17.1 Product Specifications Diameter: 56 mm / 2.2 inches Size & Thickness: 25.8 mm / 1.0 inches Weight Weight: 58g Displayarea: 39.9*31.5 mm / 1.6*1.2 inches Temperature-compensated pressure sensor: Calibration based on seawater, within 3% reduction in freshwater reading (in accordance with EN 13319) Maximum operating depth: 100 m / 328 ft (in accordance with EN Depth Meter...

  • Page 43: Diving Terms And Explanations

    17.2 Diving Terms and Explanations Terms Explanations Ascent Rate The rate at which a diver rises through the water. High partial pressure oxygen is toxic to the human body, and the toxicity from over-breathing can lead to various neurotoxic CNS toxicity symptoms.

  • Page 44: Ncc Warning

    Abbreviation for Enriched Air Nitrox (high oxygen nitrogen oxygen mixture). Abbreviated as high oxygen or written as EANx, x represents the percentage increase in the proportion of oxygen. For example, the ratio of high oxygen mixture EAN32 (NOAA I) and EAN36 (NOAA NN II) is a mixture of 32% and 36% of oxygen. Nitrox refers to any gas mixture composed (excepting trace gases) NITROX of nitrogen and oxygen.
  • Page 45 could void the user's authority to operate the equipment. RF Exposure warning The equipment complies with FCC RF exposure limits set forth for an uncontrolled environment. The equipment must not be co-located or operating in conjunction with any other antenna or transmitter. This device complies with Part 15 of the FCC Rules.

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