Operation Guide 3070 ( B )
3. Press D to move the flashing in the sequence shown below to select the
• The following steps explain how to configure timekeeping settings only.
4. When the timekeeping setting you want to change is flashing, use A and/
or C to change it as described below.
To do this:
Change the city code
Cycle between Auto DST (
Daylight Saving Time (
Standard Time (
Toggle between 12-hour (
and 24-hour (
Reset the seconds to
Change the hour or minutes
Change the year, month, or day
5. Press E to exit the setting screen.
• Auto DST (
) can be selected only while
selected as the Home City code. For more information, see "Daylight
Saving Time (DST)" below.
• You also need to enter the Timekeeping Mode in order to configure the
Power saving on/off ("To turn Power Saving on and off" )
Temperature, barometric pressure, and altitude units ("To select the
temperature, barometric pressure, and altitude units" )
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour
from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn
(England), or Fort Collins (the United States) include both Standard Time and
DST data. When the Auto DST setting is turned on, the watch switches
between Standard Time and DST (summer time) automatically in accordance
with the signals.
• Though the time calibration signal transmitted by the Fukushima and
Fukuoka/Saga, Japan transmitters include summer time data, summer time
currently is not implemented in Japan (as of 2006).
• The default DST setting is Auto DST (
as your Home City code.
• If you experience problems receiving the time calibration signal in your
area, it probably is best to switch between Standard Time and Daylight
Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down E until
the city code starts to flash, which indicates
the setting screen.
2. Press D and the DST setting screen appears.
3. Use A to cycle through the DST settings in
the sequence shown below.
Auto DST (AT)
• If you change your Home City to one that is within the same transmitter
area, the current DST setting will be retained. If you change to a city that is
outside your current transmitter area, DST will be turned off automatically.
Transmitter area city codes
• All other city codes
4. When the setting you want is selected, press E to exit the setting screen.
• The DST indicator appears to indicate that Daylight Saving Time is turned on.
Use A (east) and
Press A .
Use A (+) and C (–).
) whenever you select
DST off (OFF)
DST on (ON)
This section contains more detailed and technical information about watch
operation. It also contains important precautions and notes about the various
features and functions of this watch.
Auto Return Features
• The watch returns to the Timekeeping Mode automatically if you do not perform
any button operation for two or three minutes in the Data Recall, Alarm, Receive,
Digital Compass, or Barometer/Thermometer Mode.
• If you do not perform any button operation while in the Altimeter Mode, the watch
returns to the Timekeeping Mode automatically after nine or 10 hours (altitude
measurement type: 2'00) or after one hour (altitude measurement type: 0'05).
• If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch exits the setting screen
When you enter the World Time, Alarm, or Digital Compass Mode, the data
you were viewing when you last exited the mode appears first.
The A and C buttons are used on the setting screen to scroll through data
on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Sensor Malfunction Indicator
Subjecting the watch to strong impact can cause sensor malfunction or
improper contact of internal circuitry. When this happens,
appear on the display and sensor operations will be disabled.
appears while a measurement operation is being performed in a
sensor mode, restart the measurement. If
again, it can mean there is something wrong with the sensor.
• Even if battery power is at Level 1 or Level 2, the Digital Compass Mode,
Barometer/Thermometer Mode, or Altimeter Mode sensor may be disabled
if there is not enough voltage available to power it sufficiently. In this case,
will appear on the display. This does not indicate malfunction, and
sensor operation should resume once battery voltage returns to its normal
keeps appearing during measurement, it could mean there is a
problem with the applicable sensor.
Whenever you have a sensor malfunction, be sure to take the watch to
your original dealer or nearest authorized CASIO distributor as soon as
Button Operation Tone
• Since the D button is also the mode change button, holding it down to turn
the button operation on or off also causes the watch's current mode to
indicator is displayed in all modes when the button operation tone is
appears on the display
The button operation tone sounds any time you
press one of the watch's buttons. You can turn the
button operation tone on or off as desired.
• Even if you turn off the button operation tone,
the alarm, Hourly Time Signal, and Countdown
Timer Mode alarm all operate normally.
To turn the button operation tone on and off
In any mode (except when a setting screen is on
the display), hold down D to toggle the button
operation tone on (
not displayed) and off (
When turned on, Power Saving enters a sleep
state automatically whenever the watch is left for
a certain period in an area where it is dark. The
table below shows how watch functions are
affected by Power Saving.
• There actually are two sleep state levels:
"display sleep" and "function sleep".