Crest Audio CR-4 User Manual
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Crest Audio CR-4 User Manual

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CREST

CR-4 Dive Computer
USER GUIDE
Applicable to SW version C01-4C
1

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  • Page 1: Crest

    CREST CR-4 Dive Computer USER GUIDE Applicable to SW version C01-4C...

  • Page 2: Table Of Contents

    CREST CR-4 Dive Computer User Guide CREST CR-4 Dive Computer 1. Screen and Functions 1.1 Button function 1.2 Menu 1.3 Watch Mode and Dive History & System Information 1.3.1 Watch Mode 1.3.2 Dive History & System Information 1.3.3 Watch Mode Settings 1.4 Scuba Mode and Settings...

  • Page 3: Screen And Functions

    1. Screen and Functions 1.1 Button function Name ： Up Button Name ： Power Locate： Right Top Button Func ： Move Pointer Locate： Left Top Func ： Power Up / Acees more Settings Switch / Exit Name ： Mode / Select Button Locate：...

  • Page 4: Menu

    1.2 Menu 1.2 Menu Description: Watch Mode To Access: Default mode when your turn To Exit: Press Power Button once. Description: Scuba Mode To Access: Under Menu, press Mode Button to select Scuba Mode. To Exit: Press Power Button once. Description: Gauge Mode To Access: Under Menu, press Mode Button to select Gauge Mode.
  • Page 5 1.2 Menu Description: Freediving Mode To Access: Under Menu, press Mode Button to select Freediving Mode. To Exit: Press Power Button once. Description: Dive Logs To Access: Under Menu, press Mode Button to select Dive Logs. Use UP Button / DOWN Button to access the different dives logs stored in the memory.
  • Page 6 1.2 Menu Description: Synchronization Mode (SYNC Mode) To Access: Press Mode Button to go to Synchronization Mode (SYNC Mode). This function will activate the wireless sync transmission. The watch will broadcast signals as long as it is turned on and the screen icon shows a blinking dotted line.

  • Page 7: Watch Mode And Dive History & System Information

    1.3 Watch Mode and Dive History & System Information 1.3.1 Watch Mode Description: Default mode when your turn on. Displays day of the week, current time and calendar date. To Access: Under Menu, press Mode Button to select Watch mode or press Power Button to go back to default.

  • Page 8: Dive History & System Information

    1.3.2 Dive History & System Information Description: Last Dive Displays latest dive log: Calendar date, Time; No FLY recommendation time countdown; No DIVE recommendation time countdown; Surface Interval (SI) time counting; (continues until diver starts a new dive). To Access: Under Watch Mode, press DOWN Button once.
  • Page 9 1.3.2 Dive History & System Information Description: VERSION Displays system information of dive computer. HW: Hardware version of dive computer SW: Software version of dive computer SN: Serial Number of dive computer To Access: Under Watch Mode, press DOWN Button four times. To Exit: Under Watch Mode, press DOWN Button five times.

  • Page 10: Watch Mode Settings

    1.3.3 Watch Mode Settings Description: Date Settings To Access: Under Watch Mode, press the UP Button once, and press UP Button / DOWN Button to locate the cursor and then press MODE Button once to select the desired settings. The values at the bottom of the screen will blink.
  • Page 11 1.3.3 Watch Mode Settings Description: UTC Settings (Coordinated Universal Time Settings) To Access: Under Watch Mode, press the UP Button once, and press UP Button / DOWN Button to locate the cursor and then press MODE Button once to select the desired settings.
  • Page 12 1.3.3 Watch Mode Settings Description: Auto Active Mode at depth: Scuba Diving, Freediving, or Gauge (bottom timer). To Access: Under Watch Mode, press the UP Button once, and press UP Button / DOWN Button to locate the cursor and then press MODE Button once to select the desired settings.

  • Page 13: Scuba Mode And Settings

    1.4 Scuba Mode and Settings 1.4.1 Scuba Mode Scuba Mode: To Access: Under Menu, press t UP Button / DOWN Button to locate the cursor and then press MODE Button once to select Scuba Mode. To Exit: Press Power Button once. Description: Scuba Preview Mode Image on Top: Normal Display Image at bottom: Large Display...
  • Page 14 1.4.1 Scuba Mode Description: Scuba Under Water Mode Image on Top: Normal Display Image at bottom: Large Display 18.6m: Current Depth NDL: The Non-Decompression Limit time in minutes. TIME: Dive time. ：Ascent speed in meter/minute. If reaches 10meter/minutes, there will be alarm warning.
  • Page 15 1.4.1 Scuba Mode Description: Scuba Under Water Mode – When the NDL has not been exceeded Image on Top: Normal Display Image at bottom: Large Display CLEAR: When you finish the safety stop at the CEILING depth, dive computer will show the word CLEAR indicating that it is OK to perform a slow ascent to the surface.
  • Page 16 1.4.1 Scuba Mode Description: Scuba Under Water Mode – When the NDL has been exceeded Image on Top: Normal Display Image at bottom: Large Display NDL: When exceed the NDL time, the first 3 minutes will be shown in: mins: seconds. When exceed time passes over 3 minutes, the NDL time is shown in minutes.
  • Page 17 1.4.1 Scuba Mode Description: Scuba Under Water Mode - When exceeding the NDL, and the Deco stop at CEILING has ended. Image on Top: Normal Display Image at bottom: Large Display CLEAR：When you finish the deco stop at CEILING depth, dive computer shows CLEAR means it is OK to perform a slow ascent to surface.

  • Page 18: Scuba Mode Settings

    1.4.2 Scuba Mode Settings Description: Scuba Preview Mode Image on Top: Normal Display Image at bottom: Large Display To Access: Under Menu, press UP Button / DOWN Button to locate the cursor and then press MODE Button once to select Scuba Mode.
  • Page 19 1.4.2 Scuba Mode Settings MUST have received proper training and a certification that qualifies you to use such gas. Diving with Oxygen enriched mixes carries an additional layer of risk. Description: PPO2 Setting To Access: Under Scuba Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button to locate the cursor at PPO2 and then press MODE Button to select.
  • Page 20 1.4.2 Scuba Mode Settings Description: Conservative Factor Settings To Access: Under Scuba Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button to locate the cursor at CF and then press MODE Button to select. The CF value at the bottom of the screen will start blinking.
  • Page 21 1.4.2 Scuba Mode Settings Description: Dive Time Alarm - ON/OFF To Access: Under Scuba Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button to locate the cursor at STIME-ALM and then press MODE Button to select. One of the options will be blinking at the bottom.
  • Page 22 CR-4 Dive Comoputer will hold around 500 logs at a 10s sampling rate.
  • Page 23 1.4.2 Scuba Mode Settings Description: Log Start Depth Setting To Access: Under Scuba Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button to locate the cursor at LOG START and then press MODE Button to select. One of the log start depth options will be blinking at the bottom.
  • Page 24 1.4.2 Scuba Mode Settings Options: NORMAL: Normal Display LARGE: Large Display Description: EXIT Scuba Mode Setting To Access: Under Scuba Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button; until the cursor aligns with EXIT. Press MODE Button once.

  • Page 25: Gauge Mode

    1.5 Gauge Mode 1.5 Gauge Mode Gauge Mode: To Access: Under Menu, press t UP Button / DOWN Button to locate the cursor and then press MODE Button once to select Gauge Mode. To Exit: Press Power Button once. Description: Gauge Mode GA: Gauge Mode : Battery Indication 000.0m: Current depth...

  • Page 26: Freediving Mode And Settings

    1.6 Freediving Mode and Settings 1.6.1 Freediving Mode Freediving Mode: To Access: Under Menu, press t UP Button / DOWN Button to locate the cursor and then press MODE Button once to select Freediving Mode. To Exit: Press Power Button once. Description: Freediving Preview Mode FD: Freediving Mode 00: Total freediving counts within 18-24...
  • Page 27 1.6.1 Freediving Mode Description: Freediving Mode -Timer To Access: Press DOWN Button once under Freediving Mode. Note: In Timer function, the UP Button is to Start / Pause; MODE Button is reset time; DOWN Button is to go to next page and leave the Timer function.

  • Page 28: Freediving Mode Settings

    1.6.2 Freediving Mode Settings Description: Freediving Time Alarm - ON/OFF To Access: Under Freediving Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button; until the cursor aligns with FTIME- ALM. Press MODE Button once. One of the FTIME-ALM options will be blinking at the bottom.
  • Page 29 1.6.2 Freediving Mode Settings Description: Freediving Surface Interval Alarm To Access: Under Freediving Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button; until the cursor aligns with FSI- ALM. Press MODE Button once. One of the FSI-ALM options will be blinking at the bottom.
  • Page 30 1.6.2 Freediving Mode Settings Description: Freediving Depth Alarm Setting To Access: Under Freediving Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button; until the cursor aligns with FDPTH- THD1 to FDPTH – THD3. Press MODE Button once.
  • Page 31 1.6.2 Freediving Mode Settings Description: EXIT Freediving Mode Setting To Access: Under Freediving Preview Mode, press UP Button Or from SETTINGS, press UP Button / DOWN Button; until the cursor aligns with EXIT. Press MODE Button once.

  • Page 32: Log Mode

    1.7 Log Mode 1.7 Log Mode Description: Log Mode To Access: OC: Open Circuit Scuba mode diving history FD: Freediving mode diving history GA: Gauge mode diving history DATE: Dive Date and Time MAX：Max depth of the dive TIME: Dive time TEMP：Water temperature 000 / 000 : Log Number / Total Logs Notes: Press UP Button / DOWN Buttons to...

  • Page 33: Settings Mode

    1.8 Settings Mode 1.8 Settings Mode Please check page 10 to page 12. Watch Mode Settings Please check page 18 to page 24. Scuba Mode Settings Please check page 28 to page 31. Freediving Mode Settings Description: Unit Setting To Access: From SETTINGS, press the UP Button / DOWN Button until the cursor aligns with UNIT.
  • Page 34 1.8 Settings Mode Options: 5 mins, 10 mins, 30 mins. Note: Auto Power Off only applies during Watch Mode. While dive computer is performing any underwater or surface calculations (after a dive) the screen will remain turned on. Description: Buzzer (Alarm) Setting To Access: From SETTINGS, press the UP Button / DOWN Button until the cursor aligns with BUZZER.
  • Page 35 1.8 Settings Mode Description: Vibration setting To Access: From SETTINGS, press the UP Button / DOWN Button until the cursor aligns with VIBRATION. Press MODE Button once. One of the VIBRATION options will be blinking at the bottom. Press UP Button / DOWN Button to select other options as needed.
  • Page 36 1.8 Settings Mode Description: Clear All Dive Logs Clear (LOG Clear) To Access: From SETTINGS, press the UP Button / DOWN Button until the cursor aligns with LOG CLR. Press MODE Button once. One of the LOG CLR options will be blinking at the bottom.
  • Page 37 1.8 Settings Mode Description: All Reset (Reset all settings and clear all data) To Access: From SETTINGS, press the UP Button / DOWN Button until the cursor aligns with ALL RST. Press MODE Button once. One of the ALL RST options will be blinking at the bottom.

  • Page 38: Synchronization Mode

    1.9 Synchronization Mode 1.9 Synchronization Mode Description: Synchronization Mode (Sync Mode) - Waiting for connection To Access: Under Menu, press Mode Button to select Synchronization Mode (Sync Mode). To Exit: Press Power Button once. Note: 1. You may enter Synchronization Mode on dive computer first and operate the rest of the process from your device App.

  • Page 39: Crest Contact Info

    CREST Contact info EMAIL：INFO＠CRESTDIVING.COM WEBSITE : www.crestdiving.com...

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