E-32
Storage
• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of
this, you should store the watch away from magnets or any other sources of strong magnetism,
including: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors,
lockers, etc.), and household appliances (TVs, personal computers, washing machines, freezers, etc.)
• Whenever you suspect that the watch may have become magnetized, perform the procedure under “To
perform bidirectional calibration” (page E-24).
E-33
Taking Temperature Readings
This watch uses a temperature sensor to measure temperature.
To take temperature readings
While in the Timekeeping Mode, press
E
.
•
TEMP
will appear in the lower display and temperature measurement
will start. After about one second, the measurement reading will
appear in the upper display.
• The watch will continue to take temperature readings every fi
seconds for about two minutes.
• The watch will return to the Timekeeping Mode after the reading
operation is complete (about two minutes).
• Pressing
E
while a reading operation is in progress will stop the
operation and enter the Timekeeping Mode.
Temperature
• Temperature is displayed in units of 0.1°C (or 0.2°F).
• The displayed temperature value changes to
- - -
°C (or °F) if a measured temperature falls outside the
range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The temperature value will reappear as soon as the
measured temperature is within the allowable range.
Temperature
E-34
Display Units
You can select either Celsius (°C) or Fahrenheit (°F) for the displayed temperature value. See “To specify
the temperature unit” (page E-36).
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-35
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
mode.
4. Use
E
(+) and
B
(−) to calibrate the temperature value with the reading of another instrument.
• Eac
• TOFF sett
E
and
B
at the s
time.
5. Press
A
to return to the Thermometer Mode.
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-36
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
disappears from the bottom display. Release
A
at this time, which will
cause the temperature reading to fl
mode.
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-37
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-39).
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
, and the current city code and city
name will scroll across the lower display. After that, the city code will
remain shown in the lower display. You can scroll the city code and
city name again by pressing
A
.
• The digital meter shows the seconds count.
• The hour, minute, and second hands will indicate the current
Timekeeping Mode time.
Currently selected
World Time City
Current time in the currently
selected World Time City
Currently selected
World Time City
Current time in the currently
selected World Time City
E-38
To confi
1. In the World Time Mode, use
E
(East) to scroll through city codes.
• For d
• Ho
E
will s
• Pres
B
and
E
at the s
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
• Usin
Ho
• Note tUTC is
selected as the
• Note t
cit
E-39
Swapping the Home City and World Time City
You can use the procedure below to swap your Home Time City (whose time is indicated by the hands)
with your World Time City (whose time is indicated by the digital display).
This function comes in handy for those who often travel between two different time zones.
• You need to confi
procedure below.
To confi
To confi
To swap your Home Time and World Time Cities
Press
A
and
B
at the same time.
• The times indicated by the hand (Home City time) and on the digital display (World Time City time) will
be swapped with each other.
$ and %
New World Time
City and Time
Home City [LON] Time
Current World Time
City and Time
Home City [TYO] Time
Operation Guide 5415
