Operation Guide 3148
World Time
Barometric Pressure Graph
Barometric pressure indicates changes in the atmosphere. By monitoring these changes you can predict the weather with reasonable accuracy.
This watch takes barometric pressure measurements automatically every two hours (at the top of each
The barometric pressure graph shows readings of previous measurements for up to 24 hours. The horizontal axis of the graph represents time, with each dot standing for two hours. The rightmost dot represents the most recent reading. The vertical axis of the graph represents barometric pressure, with each dot standing for the relative difference between its reading and that of the dots next to it. Each dot represents 1hPa.
The following shows how to interpret the data that appears on the barometric pressure graph.
A rising graph generally means improving weather.
Timekeeping
Mode time
City code
Current time in the zone of the selected city code
World Time displays the current time in 33 cities (29 time zones) around the world.
•If the current time shown for a city is wrong, check your Home City time settings and make the necessary changes.
•For full information on city codes, see the “City Code Table”.
•All of the operations in this section are performed in the World Time Mode, which you enter by pressing D.
To view the time in another city
In the World Time Mode, use E (east) and B (west) to scroll through city codes (time zones).
•When the currently selected time zone is one that includes mostly ocean, a value indicating the zone’s UTC offset appears in place of a city code.
A falling graph generally means deteriorating weather.
Note that if there are sudden changes in weather or temperature, the graph line of past measurements may run off the top or bottom of the display. The entire graph will become visible once barometric conditions stabilize.
The following conditions cause the barometric pressure measurement to be skipped, with the corresponding point on the barometric pressure graph being left blank.
•Barometric reading that is out of range (260 hPa/mb to 1,100 hPa/mb or 7.65 inHg to 32.45 inHg)
•Sensor malfunction
Barometric Pressure Change Indicator
| Barometric pressure |
Barometric pressure graph | change indicator |
lll |
|
ll l | A |
l |
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator | 1. In the World Time Mode, use E (east) and B |
| (west) to display the city code (time zone) |
| whose Standard Time/Daylight Saving Time |
| setting you want to change. |
| 2. Hold down A to toggle between Daylight |
| Saving Time (DST indicator displayed) and |
| Standard Time (DST indicator not displayed). |
| • The DST indicator appears on the display |
| whenever you display a city code for which |
| Daylight Saving Time is turned on. |
•You cannot toggle between Daylight Saving Time and Standard Time if the displayed city code is UTC(UTC offset: 0).
•Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.
Stopwatch
ll |
▲ |
▲ |
A |
In the Barometer/Thermometer Mode, press the A button to toggle between the barometric pressure graph and the barometric pressure change indicator. This indicator ( ) indicates the relative difference between the most recent barometric pressure reading indicated on the barometric pressure graph, and the current barometric pressure value displayed in the Barometer/ Thermometer Mode.
•Pressure differential is indicated in the range of ±4 hPa, in
• The barometric pressure change indicator ( ) is not displayed when the displayed current barometric value is outside of the allowable measurement range (260 to 1,100 hPa).
Hours | Current time |
1/100 second
Minutes Seconds
The stopwatch lets you measure elapsed time, split times, and two finishes.
•The Stopwatch Mode is independent of the Altimeter Mode stopwatch.
•The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
•The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
•The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
•Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
•All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing D.
•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.
| or | |
Barometric pressure | More than +4hPa | |
change indicator | ||
| ||
| +3hPa | |
| +2hPa | |
| +1hPa | |
| ±0hPa | |
| ||
| ||
| ||
| Less than |
About Barometric and Temperature Measurements
•Barometric pressure and temperature measurement operations are performed as soon as you enter the Barometer/Thermometer Mode. After that, barometric pressure and temperature measurements are taken every five seconds.
•During barometric pressure measurements, the watch may not be able to update its timekeeping display contents normally. Correct timekeeping is
maintained internally, however.
To measure times with the stopwatch
Elapsed Time |
|
|
|
| |
E | JE |
| JE | JE | J B |
Start | Stop |
|
| Stop | Clear |
Split Time |
|
|
|
|
|
E | JB |
| JB | JE | J B |
Start | Split | Split release | Stop | Clear | |
| (SPL displayed) |
|
| ||
Two Finishes |
|
|
|
| |
E | JB |
| JE | JB | J B |
Start | Split |
| Stop | Split release | Clear |
| First runner | Second runner | Display time of |
| |
| finishes. |
| finishes. | second runner. |
|
| Display time |
|
|
| |
of first runner.
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