Operation Guide 5450
E-20
Screen To do this: Do this:
Toggle between 12-hour (
12H
) and 24-hour
(
24H
) timekeeping.
Press
D
.
Reset the seconds to
00
Press
D
.
Change the hour or minute
Use
D
(+) and
B
(–).
Change the year, month, or day
5. Press
A
to exit the setting screen.
E-21
Note
• For information about selecting a Home City and confi
“Confi
• While 12-hour format is selected for timekeeping, a
P
(PM) indicator will appear for
times from noon to 11:59 p.m. No indicator appears for times from midnight to
11:59 a.m. With 24-hour format, time is displayed from 0:00 to 23:59, without any
P
(PM) indicator.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to
change it except after you have the watch’s battery replaced.
E-22
Hand Home Position Correction
The hour and minute hands of the watch can be thrown off by exposure to strong
magnetism or impact. The watch is designed to correct the hour and minute hand
positions manually.
• All of the operations in this section are performed in the Hand Setting Mode, which
you enter by pressing
C
(page E-11).
To adjust home positions
1. In the Hand Setting Mode, hold down
A
for about two
seconds until 0:00 appears on the display.
• Thi
2. Check the positions of the hour and minute hands.
• T
poi
D
(cl
and
B
(counte
3. Press
A
to exit the setting screen.
• This will cause
the curren
Hour and minute hands
Correct hour and
minute hand positions
Hour and minute hands
Correct hour and
minute hand positions
E-23
Barometer/Thermometer
This watch uses a pressure sensor to measure air pressure (barometric pressure) and
a temperature sensor to measure temperature.
To enter and exit the Barometer/Thermometer Mode
1. While in the Timekeeping Mode, press
C
to enter the
Barometer/Thermometer Mode.
• BARO wil
that b
mea
resul
seconds.
• After you press
C
, the wa
fi
ever
Temperature
Current time
Barometric
pressure
Pressure
differential
level indicator
Temperature
Current time
Barometric
pressure
Pressure
differential
level indicator
E-24
2. Press
C
fi
•
The wa
any op
Barometric Pressure
• Barometric pressure is displayed in units of 1 hPa (or 0.05 inHg).
•
The displayed barometric pressure value changes to
- - -
if a measured barometric
pressure falls outside the range of 260 hPa to 1,100 hPa (7.65 inHg to 32.45 inHg).
The barometric pressure value will reappear as soon as the measured barometric
pressure is within the allowable range.
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.
E-25
Display Units
You can select either hectopascals (hPa) or inchesHg (inHg) as the display unit for the
measured barometric pressure, and Celsius (°C) or Fahrenheit (°F) as the display unit
for the measured temperature value. See “To specify temperature, barometric
pressure, and altitude units” (page E-39).
Pressure Differential Level Indicator
This indicator shows the relative difference between the
most recent barometric pressure reading and the current
barometric pressure value displayed in the Barometer/
Thermometer Mode (page E-23).
Pressure
differential level
indicator
Pressure
differential level
indicator
E-26
Interpreting Barometric Pressure Differential Levels
Pressure differential is indicated in the range of ±5 hPa, in 1-hPa units.
If the level indicator is here: It means this:
Plus (+) side
Pressure is rising and weather will tend to improve.
Minus (–) side
Pressure is falling and weather will tend to deteriorate.
• The nearby screen shot, for example, shows the level indicator when the calculated
pressure differential is approximately –3 hPa (approximately –0.09 inHg).
−0.15
0.15
inHg values
Minus (–) side
Current pressure less than most
recent measured pressure
Plus (+) side
Current pressure greater than
most recent measured pressure
E-27
• Barometric pressure is calculated and displayed using hPa as the standard. The
barometric pressure differential also can be read in inHg units as shown in the
illustration (1 hPa
=
0.03 inHg).
Pressure Sensor and Temperature Sensor Calibration
The pressure sensor and temperature sensor built into the watch are calibrated at the
factory and normally require no further adjustment. If you notice serious errors in the
pressure readings and temperature readings produced by the watch, you can calibrate
a sensor to the reading of another device 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-28
To calibrate the pressure sensor and the temperature sensor
1.Take a reading with another measurement device to
determine the exact current barometric pressure or
temperature.
2. With the watch in the Timekeeping Mode, press
C
to
enter the Barometer/Thermometer Mode.
3. Hold down
A
until the current temperature value starts
to fl
• Befo
message SET will ap
Keep
A
depreSET Hold disappears.
4. Press
C
to move the fl ashing between the temperature
value and barometric pressure value, to select the one
you want to calibrate.
E-29
5.
Use
D
(+) and
B
(–) to adjust the calibration value in the units shown below.
Temperature 0.1°C (0.2°F)
Barometric Pressure 1 hPa (0.05 inHg)
• T
B
and
D
at the sOFF will ap
sec
6. Press
A
to return to the Barometer/Thermometer Mode screen.
Barometer and Thermometer Precautions
• The pressure sensor built into this watch measures changes in air pressure, which
you can then apply to your own weather predictions. It is not intended for use as a
precision instrument in offi
• Sudden temperature changes can affect pressure sensor readings.
• 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.
