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MA1303-EA
The measurement functions built into this watch are not intended for taking
measurements that require professional or industrial precision. Values produced
by this watch should be considered as reasonable representations only.
To ensure correct direction readings by this watch, be sure to perform
bidirectional calibration before using it. The watch may produce incorrect
direction readings if you do not perform bidirectional calibration. For more
information, see "To perform bidirectional calibration" (page E-56).
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.
E-2
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
unlocked creates the risk of unintended operations or even damage due to impact.
To lock the crown
1. Push the crown back in (see "To pull out, rotate, or push the
Mark 1
crown in" below).
Groove
2. Rotate the crown so any one of its three grooves is aligned
with Mark 1.
Mark 2
3. While pushing in on the crown (a), rotate it to the right (b) until
it stops, and align the groove with Mark 2.
E-4
High-speed Movement
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, either forward or back. There are
two high-speed levels: HS1 and HS2 (faster than HS1).
To start HS1 high-speed movement
While the crown is pulled out, rotate it rapidly three turns away
from you (for forward movement) or towards you (for reverse
movement). High-speed movement will continue even if you
release the crown.
To start HS2 high-speed movement
While HS1 high-speed movement is in progress, again rotate
the crown rapidly three turns in the same direction as the
current HS1 movement (away from you for forward movement
or towards you for reverse movement).
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?
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-14).
E-8
Operation Guide 5311
Warning!
Note that attempting to lock the crown when it is not pushed
in can cause unexpected watch operation.
NO
The watch is charged. For details
about charging, see "Charging the
Watch" (page E-14).
YES
Go to step 2.
Congratulations upon your selection of this CASIO watch.
Note that the product illustrations in this manual are intended for reference only, and
so 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.
About This Manual
4. Gently pull on the crown to make sure it is securely locked and does not come out.
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.
The illustrations below show the different crown operations.
Pull out
To stop high-speed movement
Note
If you do not perform any operation for more than two minutes after pulling out the
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
Timekeeping Mode, Alarm Mode, or Countdown Timer Mode.
Button operations become disabled after you perform a crown operation. If this
happens, rotate the crown slightly. This should restore button operations.
2. Check the Home City.
Use the procedure under "To confi gure Home City settings" (page E-36) 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
YES
correctly.
3. Set the current time.
To set the time using a time calibration signal
See "To get ready for a receive operation" (page E-25).
NEXT
To set the time manually
See "Confi guring Current Time and Day Settings Manually" (page E-41).
The watch is now ready for use.
For details about the watch's radio controlled timekeeping feature, see "Radio
Controlled Atomic Timekeeping" (page E-20).
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.
Rotate
Rotate the crown in the direction that is opposite that of the
current high-speed movement or press any button.
ENGLISH
E-1
E-3
Push in
E-5
E-7
E-9

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Table of Contents
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Summary of Contents for Casio 5311

  • Page 1 “To perform bidirectional calibration” (page E-56). x Second Hand 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 c Minute Hand product or its malfunction.
  • Page 2: Table Of Contents

    Operation Guide 5311 E-32 Mode Reference Guide Contents E-33 To determine the watch’s current mode About This Manual E-33 To return to the Timekeeping Mode from any other mode E-34 To select a mode Using the Crown To lock the crown...
  • Page 3: Radio Controlled Atomic Timekeeping

    Operation Guide 5311 Radio Controlled Atomic Timekeeping The watch can receive the signal from If your Home City Code setting is this: the transmitter located here: This watch receives a time calibration signal and updates its time setting accordingly. Anthorn (England), Mainfl ingen...
  • Page 4: To Turn Auto Receive On And Off

    Operation Guide 5311 Note Radio-controlled Atomic Timekeeping Precautions The x Second Hand will indicate N (NO) if you have adjusted the time or day Strong electrostatic charge can result in the wrong time setting. setting manually since the latest receive operation.
  • Page 5 Operation Guide 5311 2. Hold down A for about one second to cycle through the Confi guring Current Time and Day Settings Manually summer time settings as shown below. You can confi gure current time and day settings manually when the watch is unable to receive a time calibration signal.
  • Page 6 Operation Guide 5311 The x Second Hand indicates magnetic north. To take a direction reading The x Second Hand will continue to move for about 20 seconds after you start 1. Point the 12 o’clock position of the watch in the direction the digital compass operation as it adjusts its magnetic north reading.
  • Page 7: Checking The Current Time In A Different Time Zone

    Operation Guide 5311 Digital Compass Precautions Location Taking a direction reading when you are near a source of strong magnetism can Magnetic North and True North cause large errors in readings. Because of this, you should avoid taking direction The northerly direction can be expressed either as...
  • Page 8: To Enter And Exit The Stopwatch Mode

    Operation Guide 5311 The x Second Hand, which indicates the 1/20 (0.05)-second count during To enter and exit the Stopwatch Mode In the Timekeeping Mode, press C twice to enter the Stopwatch Mode. stopwatch operation, moves only 30 seconds after an elapsed time measurement operation is started or restarted.
  • Page 9: To Adjust Home Positions

    (page E-56). problem with the sensor or internal circuitry. Whenever you have a sensor malfunction, take the watch to your original dealer or nearest authorized CASIO distributor as soon as possible. E-86 E-87 ■ What causes incorrect direction readings? Charging The watch may have been exposed to magnetism.
  • Page 10: Specifi Cations

    Operation Guide 5311 ■ The current time setting changes after I set it manually. ■ The x Second Hand indicates N (NO) when I check the result of the latest You may have the watch confi gured for Auto Receive of the time calibration signal receive operation.
  • Page 11 Operation Guide 5311 Summer Time Period UTC Offset/ City Code Table City Code City Summer Time Summer Time End Summer Time Period UTC Offset/ Differential Start City Code City Summer Time Fernando Summer Time End Differential Start F. DE NORONHA(FEN) –2...

Table of Contents