Casio 5240

Operation Guide 5240
E-9
E-30 Mode Reference Guide
E-31 To determine the watch’s current mode
E-31 To return to the Timekeeping Mode from any other mode
E-32 To select a mode
E-33 Timekeeping
E-34 Confi guring Home City Settings
E-34 To confi gure Home City settings
E-37 To switch between standard time and summer time manually
E-39 Confi guring Current Time and Day Settings Manually
E-39 To change the current time setting manually
E-42 To change the current day setting manually
E-46 Thermometer
E-47 To take a temperature reading
E-48 To switch a temperature reading unit between Celsius (°C) and
Fahrenheit (°F)
E-8
Contents
E-2 About This Manual
E-3 Using the Crown
E-3 To lock the crown
E-4 To unlock the crown
E-4 To pull out, rotate, or push the crown in
E-6 Things to check before using the watch
E-12 Charging the Watch
E-17 To recover from the sleep state
E-18 Radio Controlled Atomic Timekeeping
E-23 To get ready for a receive operation
E-26 To perform manual receive
E-27 To check the result of the latest receive operation
E-28 To turn auto receive on and off
E-7
2. Check the Home City.
Use the procedure under “To confi gure Home City settings” (page E-34) to confi gure
your Home City.
Important!
Proper time calibration signal reception depends on correct Home City, time, and
day settings in the Timekeeping Mode. Make sure you confi gure these settings
correctly.
3. Set the current time.
x To set the time using a time calibration signal
See “To get ready for a receive operation” (page E-23).
x To set the time manually
See “Confi guring Current Time and Day Settings Manually” (page E-39).
The watch is now ready for use.
For details about the watch’s radio controlled timekeeping feature, see “Radio x
Controlled Atomic Timekeeping” (page E-18).
E-6
Things to check before using the watch
1. Hold down C at least two seconds to enter the Timekeeping Mode, and
then observe the movement of the
x
Second Hand.
Is the
x
Second Hand moving smoothly at one-second intervals?
Is the
x
Second Hand moving at
two-second intervals or is it stopped
completely?
Go to step 2.
The watch is charged. For details
about charging, see “Charging
the Watch” (page E-12).
Power is low. Charge the watch by
placing it in a location where it is
exposed to light. For details, see
“Charging the Watch” (page E-12).
NO
YES
YES
NEXT
E-5
High-speed 1 High-speed 2 High-speed Cancel
With the crown pulled out,
rotate it rapidly away from
you three times.
After starting the High-
speed 1 operation, rotate
the crown rapidly away
from you three more times.
Rotate the crown towards
you or press any button.
Note
If you do not perform any operation for more than two minutes after pulling out the
x
crown, crown operations will become disabled automatically. If this happens, push
the crown back in and then pull it out again to re-enable crown operations.
You can use high-speed hand movement when confi guring time settings in the
x
Timekeeping Mode, Alarm Mode, or Countdown Timer Mode.
High-speed hand movement is forward only. There is no high-speed backward x
hand movement.
E-4
To unlock the crown
Rotate the crown so the groove aligns with Mark 1.
To pull out, rotate, or push the crown in
Important!
Before performing any of these operations, fi rst unlock the crown.
x
The illustrations below show the different crown operations.
Pull out Rotate Push in
When rotating the crown to move the hands of the watch, you can use the operations
described below to move the hands at high speed. There are two high-speed hand
movement speeds. High-speed 2 is the fastest.
E-3
Using the Crown
This watch has a lock-type crown.
Important!
You should normally have the crown locked during normal daily use. Leaving the crown
x
unlocked creates the risk of unintended operations or even damage due to impact.
To lock the crown
Push the crown back in (see “To pull out, rotate, or push the 1.
crown in” below).
Note that attempting to lock the crown when it is not
x
pushed in can cause unexpected watch operation.
Rotate the crown so the groove is aligned with Mark 1.2.
While pushing in on the crown (a), rotate it to the right (b) so 3.
the groove aligns with Mark 2.
Gently pull on the crown to make sure it is securely locked 4.
and does not come out.
Mark 1
Groove
V
W
Mark 2
E-2
About This Manual
Operations are performed using the watch’s crown, and
the three buttons indicated by the letters A, B and C in
this manual.
Hands and Indicators
z
Hour Hand
x
Second Hand
c
Minute Hand
v
Upper Dial Hand: Indicates a time, in 24-hour format,
depending on the current mode.
b
Lower Dial Hand: Indicates the current mode.
n
Day Indicator
This User’s Guide uses numbers shown above to identify
watch hands and indicator.
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+
6*
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E-1
ENGLISH
Congratulations upon your selection of this CASIO watch.
Note that the product illustrations in this manual are intended for reference only, and so
x
the actual product may appear somewhat different than depicted by an illustration.
This watch does not have a city code that corresponds to the UTC offset of –3.5
hours. Because of this, the radio-controlled atomic timekeeping function will not
display the correct time for Newfoundland, Canada.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any
damage or loss suffered by you or any third party arising through the use of this
product or its malfunction.
MA1307-EC
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Casio 5240 Specifications

General

Brand	Casio
Model	5240
Category	Watch
Language	English

Summary

About This Manual

Hands and Indicators

Identifies watch hands and indicators.

Using the Crown

Details on operating the watch crown, including locking and unlocking.

To lock the crown

To pull out, rotate, or push the crown in

Things to check before using the watch

Charging the Watch

Charging Guide

Best practices for charging the watch.

Checking the Current Power Level

How to assess the watch's battery power level.

Low Power

Low Battery Alert (Hand Movement and Function Status)

Power Saving

To recover from the sleep state

Steps to wake the watch from sleep mode.

Radio Controlled Atomic Timekeeping

Signal Reception Areas

Maps and details of signal reception ranges.

To get ready for a receive operation

Steps to prepare for time signal reception.

To perform manual receive

How to initiate a manual time signal reception.

To turn auto receive on and off

Instructions to enable or disable auto receive.

Mode Reference Guide

To determine the watchs current mode

How to identify the active mode via the lower dial hand.

To return to the Timekeeping Mode from any other mode

Procedure to revert to the primary mode.

To select a mode

Steps to navigate between different watch modes.

Timekeeping

Hands and Indicators

Details on hands and indicators within Timekeeping Mode.

Configuring Home City Settings

To configure Home City settings

Steps to set the watch's home city.

STDDST Switching

To switch between standard time and summer time manually

Instructions for manual STD/DST adjustments.

Configuring Current Time and Day Settings Manually

To change the current time setting manually

Procedure for manual time adjustment.

To change the current day setting manually

Thermometer

To take a temperature reading

Instructions for taking temperature measurements.

To switch a temperature reading unit between Celsius (C) and Fahrenheit (F)

Correcting the Temperature Reading

Temperature Reading Precautions

Checking the Current Time in a Different Time Zone

To view the time in another time zone

Steps to check time in other cities.

Swapping your Home City and World Time City

To swap your Home City and World Time City

Procedure to exchange Home and World Time cities.

Using the Stopwatch

To perform an elapsed time operation

How to measure elapsed time.

To perform flyback timing

Instructions for flyback stopwatch operations.

Using the Countdown Timer

To specify the countdown start time

Steps to set the countdown timer duration.

To perform a countdown timer operation

How to run the countdown timer.

Using the Alarm

To change the alarm time setting

Steps to modify the alarm time.

To turn the alarm on or off

How to enable or disable the alarm.

Adjusting Home Positions

Auto Home Position Adjustment

Automatic correction of hand home positions.

Manual Home Position Adjustment

Manual procedure to correct hand positions.

To adjust home positions

Detailed steps for manual home position adjustment.

Troubleshooting

Hand Movement and Position

Solutions for issues with hand movement and alignment.

Sensor

Troubleshooting steps for sensor-related errors.

Charging

Solutions for watch charging problems.

Time Calibration Signal

Troubleshooting for signal reception issues.

World Time

The indicated World Time is wrong

Troubleshooting incorrect World Time display.

Specifications