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E-32
Display Units
You can select either Celsius (°C) or Fahrenheit (°F) for the displayed temperature value. See “To specify
the temperature unit” (page E-34).
Temperature Sensor Calibration
The temperature sensor built into the watch is calibrated at the factory and normally requires no further
adjustment. If you notice serious errors in the temperature readings produced by the watch, you can
calibrate the sensor to correct the errors.
Important!
Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.
Compare the readings produced by the watch with those of another reliable and accurate thermometer.
– If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the
temperature of the watch time to stabilize.
E-33
To calibrate the temperature sensor
1. Take a reading with another measurement device to determine the
exact current temperature.
2. With the watch in the Timekeeping Mode, press
E
to enter the
Thermometer Mode.
3. Hold down
A
for about two seconds until the temperature reading
disappears from the bottom display. Release
A
at this time, which will
cause the temperature reading to fl ash, which indicates the setting
mode.
4. Use
E
(+) and
B
(−) to calibrate the temperature value with the reading of another instrument.
Each press of a button changes the temperature value in units of 0.1°C (0.2°F).
To return the temperature to its uncalibrated value (OFF setting), press
E
and
B
at the same
time.
5. Press
A
to complete calibration and restart the temperature reading operation.
Thermometer Precautions
Temperature measurements are affected by your body temperature (while you are wearing the watch),
direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch
from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the
case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding
temperature.
E-34
Specifying Temperature Unit
Use the procedure below to specify the temperature unit to be used in the Thermometer Mode.
Important!
When
TOKYO
is selected as the Home City, the temperature unit is set automatically to Celsius (
°C
). This
setting cannot be changed.
To specify the temperature unit
1. In the Timekeeping Mode, press
E
to enter the Thermometer Mode.
2. Hold down
A
for about two seconds until the temperature reading
starts to fl ash.
3. Press
D
to display the current temperature unit in the upper display.
4. Press
E
to toggle the temperature unit between
°C
(Celsius) and
°F
(Fahrenheit).
5. After the setting is the way you want, press
A
to exit the setting
screen.
E-35
Checking the Current Time in a Different Time Zone
You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the
globe. The city that is currently selected in the World Time Mode is called the “World Time City”.
You also can swap the current World Time City and Home Time City in the World Time Mode (page
E-37).
To enter the World Time Mode
Use
D
to select the World Time Mode as shown on page E-8.
The mode dial hand will point to
WT
.
The city code of the currently selected World Time City will appear in
the upper display.
Pressing
A
displays the current time (hour, minute second) of the
World Time City in the upper display.
Currently selected
World Time City
World Time
hour hand
World Time
minute hand
Currently selected
World Time City
World Time
hour hand
World Time
minute hand
E-36
To confi gure World Time City and summer time settings
1. In the World Time Mode, use
E
(East) to scroll through city codes.
For details about city codes, see the “City Code Table” at the back of this manual.
Holding down
E
will scroll at high speed.
Pressing down
B
and
E
at the same time will jump to the UTC city code.
2. To toggle between summer time (
DST
in the upper display) and standard time (
DST
not displayed),
hold down
A
.
DST indicator
Hold down A
Using the World Time Mode to change the DST setting of the city code that is selected as your
Home City also will change the Timekeeping Mode time DST setting.
Note that you cannot switch between standard time/daylight saving time (DST) while UTC is
selected as the World Time City.
Note that the standard time/daylight saving time (DST) setting affects only the currently selected
city code. Other city codes are not affected.
E-37
Swapping the Home City and World Time City
You can use the procedure below to swap your Home Time City with your World Time City.
This function comes in handy for those who often travel between two different time zones.
You need to confi gure starting Home City and World Time City settings before performing the
procedure below.
To confi gure Home City settings (page E-14)
To confi gure World Time City and summer time settings (page E-36)
To swap your Home Time and World Time Cities
Press
A
and
B
at the same time.
The Home City time (indicated by the main hour and minute hands) and the World Time City time
(indicated by the dial hands) will be swapped with each other.
$ and %
New World Time
City and Time
Home City [NYC] Time
Current World Time
City and Time
Home City [TYO] Time
E-38
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two fi nishes.
To enter the Stopwatch Mode
Use
D
to select the Stopwatch Mode as shown on page E-8.
The mode dial hand will move to
STW
.
To perform an elapsed time operation
E
E
E E
A
Start Stop (Resume) (Stop) Reset
To pause at a split time
E
A
A E
A
Start Split
(
SPL
appears in
the upper display.)
Split release Stop Reset
Seconds
Minutes
1/100 second
Seconds
Minutes
1/100 second
E-39
To measure two fi nishes
E
A
E A
A
Start Split
First runner fi nishes.
(
SPL
appears in the
upper display.)
Display time of fi rst
runner
Stop
Second runner
nishes.
Split release
Display time of
second runner
Reset
Note
The Stopwatch Mode can indicate elapsed time up to 59 minutes, 59.99 seconds.
Once started, stopwatch timing continues until you press
E
to stop it, even if you exit the Stopwatch
Mode to another mode and even if timing reaches the stopwatch limit defi ned above.
Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time.
Operation Guide 5441
5


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