Crest Audio CR-4 User manual

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

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CREST CR-4 Dive Computer User Guide
CREST 1
CR-4 Dive Computer 1
1. Screen and Functions 3
1.1 Button function 3
1.2 Menu 4
1.3 Watch Mode and Dive History & System Information 7
1.3.1 Watch Mode 7
1.3.2 Dive History & System Information 8
1.3.3 Watch Mode Settings 10
1.4 Scuba Mode and Settings 13
1.4.1 Scuba Mode 13
1.4.2 Scuba Mode Settings 18
1.5 Gauge Mode 25
1.6 Freediving Mode and Settings 26
1.6.1 Freediving Mode 26
1.6.2 Freediving Mode Settings 28
1.7 Log Mode 32
1.8 Settings Mode 33
1.9 Synchronization Mode 38
CREST Contact info 39

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1. Screen and Functions
1.1 Button function
Name ：Power
Button
Locate：Left Top
Func ：Power
Switch / Exit
Name ：Up Button
Locate：Right Top
Func ：Move Pointer
Up / Acees more
Settings
Name ：Mode /
Select Button
Locate：Right Middle
Func ：Menu / Enter
Value
Name ：Down Button
Locate：Right Down
Func ：Move Pointer
Down / Access Dive
History & System
Information (Under
Watch Mode)

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1.2 Menu
1.2 Menu
Description: Watch Mode
To Access: Default mode when your turn
on.
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.
To Exit: Press Power Button once.

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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. They are
stored in order by date.
To Exit: Press Power Button once.
Description: Settings
To Access: Press Mode Button to go to
system settings. Use UP Button / DOWN
Button to see the different setting options.
To Exit: Press Power Button once.

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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.
To Exit: Press Power Button once.

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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.
Events during this function:
1. When dive computer is not being used
or the G-Sensor does not sense
movement after preset time, Auto
Power Off functions will apply and it will
go to Standby Status (blank screen). To
change the preset time, please check
page 33 for Power Auto Off.
2. When the computer is not used for a
longer period of time (24 hours.) it will
go to Sleep Status for better battery
management.
3. Under Standby Status, you may wake
up dive computer by twisting it over 45
degrees to activate the G-Sensor, or
press any button.
4. Under Sleep Status, you can only turn
on dive computer by pressing the
power button. All the settings and data
will remain in memory.
WARNING: Always check your dive
computer status before your dive. If
dive computer is under Sleep Status,
it will NOT start automatically when
you enter water.

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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.
Description: SCUBA HISTORY
Displays dives under Scuba Mode:
Dive counts
Accumulated dive time
Maximum Operating Depth (MOD)
To Access: Under Watch Mode, press
DOWN Button twice.
Description: FREEDIVING HISTORY
Displays dives under Freediving Mode:
Dive counts
Maximum Operating Depth (MOD)
Length of Time (LOT)
To Access: Under Watch Mode, press
DOWN Button three times.

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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.

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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.
DATE Settings: Changes the values of 3
groups of digits corresponding to Month,
Day and Year using UP Button / DOWN
Button to select and accept the selection
with MODE Button.
Description: Date Format 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.
DATE FORMAT Settings: Changes the
order in which the Day, Month and Year
are displayed on dive computer to
accommodate the region of the world you
live in. Use UP Button / DOWN Button to
select and accept the selection with MODE
Button.
Description: 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. The values at the
bottom of the screen will blink.
TIME Settings: Changes the values for
Hours and Minutes so the correct time can
be displayed on dive computer. Use UP
Button / DOWN Button to select and
accept the selection with MODE Button.
Note: Please be aware that the watch
will not self-adjust for daylight savings
time.