User manual

User’s Guide 5531 (MRG)
E-21
Data Communication Specifications
Bluetooth
®
Frequency Band: 2400MHz-2480MHz
Maximum Transmission: 0 dBm (1 mW)
Communication range: 2 meters max. (depends on environment)
Stopwatch: Measuring capacity: 23:59'59"
Measuring unit: 1 second
Measuring modes: Elapsed time
Countdown Timer:
Measuring unit: 1 second
Input range: 24 hours (1-minute increments)
Alarm: Daily alarm
Other: LED light; Power Saving; Low battery alert; Auto Correction of Hand Home Positions; Airplane
Mode (disables data communication)
Power Supply: Solar panel and one rechargeable battery
Approximately 6 months
Not exposed to light under the conditions below.
GPS time information receive: 1 operation (approximately 10 seconds) every 2 days
GPS time position information receive: 1 operation (approximately 45 seconds)/month
Light: 1 operation/day
Alarm: 1 operation/day
Specifications are subject to change without notice.
For open source information, visit the CASIO website.
https://world.casio.com/manual/wat/
DE-20
Specifications
Accuracy at normal temperature: ±15 seconds a month (When receive of a calibration signal or
communication with a phone for time adjustment is not possible.)
Timekeeping : Hour, minutes, seconds, 24-hour, day, day of the week
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City (Time Zone) and World Time City (Time Zone) can be assigned one of 39 time
zones* and Coordinated Universal Time; Daylight Saving Time (summer time)/Standard Time
auto switching
* Time zone data may be changed when the watch communicates with a phone.
Signal receive function: GPS signal auto receive, manual receive
Time calibration signal auto receive
Auto transmitter selection (for JJY, MSF/DCF77)
Receivable call signs: JJY (40 kHz/60 kHz), BPC (68.5 kHz), WWVB (60 kHz), MSF (60 kHz),
DCF77 (77.5 kHz)
Last reception result display
Manual and auto standard time/summer time switching
Mobile Link Functions:
Auto Time Correction
Time setting automatically adjusted during a fixed time period.
Auto summer time switching
Automatic switching between standard time and summer time.
Hand position correction
E-19D
Crown Operations and Configuring Settings
x Before performing a crown operation, rotate it towards you to unlock (unscrew) it.
x You can change the following settings by operating the watch’s crown: World Time City (time zone),
Home City (time zone), summer time (DST), Timer, Alarms, and current time.
x For details about crown operations, see the Operation Guide available at the CASIO website.
https://world.casio.com/manual/wat/
Important!
x In order to prevent loss of water resistance and damage due to impact, make sure that the crown is
fully pushed in to its normal position when using the watch.
E-18
Time Calibration Signal Auto Receive
Important!
x To perform time calibration signal auto receive, the watch must be in the Timekeeping Mode (not in the
Airplane Mode). See “Mode Reference Guide” (page E-10).
●
Leave the watch in a location that is appropriate for time calibration signal reception between
the hours of midnight and 5:00 a.m. See “Appropriate Signal Reception Location (Time
Calibration Signal)” (page E-17).
x The second hand will point to RC while time calibration signal reception is in progress.
x Reception normally takes anywhere from about two to ten minutes, but it can take as long as
20minutes.
x When the receive operation is successful, the time and day settings will be adjusted automatically.
E-17
Timekeeping (Based on a Time Calibration Signal)
Appropriate Signal Reception Location (Time Calibration Signal)
x Keep the watch away from metal and position it so its 6 o’clock side is
facing a window. Avoid moving the watch as much as possible and do
not perform any watch operations while a signal receive operation is in
progress.
●
You may experience time calibration signal reception problems in
the areas described below.
- Among or near buildings
- While riding in a vehicle
- Near household appliances, office machines, mobile phones, etc.
- On a construction site, in an airport, or any other location where radio
wave interference occurs
- Near high-voltage lines
- In mountainous areas or behind a mountain
x Always check the time setting on the day there should be a switch
between standard time and summer time (DST). If the setting is not
correct (due to signal reception failure), turn DST on or off manually as
required.
6 o’clock
E-16
GPS Signal Auto Receive
Important!
x Perform the signal receive operation in the Timekeeping Mode (not in the Airplane Mode). See “Mode
Reference Guide” (page E-10).
●
GPS signal time information is received automatically whenever all of the conditions described
below are satisfied.
- The current time is between 6:00 a.m. and 10:00 p.m.
- The face of the watch has been exposed continuously for about one or two minutes to light
equivalent to the brightness near a window on a clear day.
- All time calibration signal receive operations performed during the previous night were unsuccessful.