G-Shock GA-150 - Manual (Page 3)

Operation Guide 5255
E-20
Lap Time
A lap time reading shows the time elapsed since the last
lap time reading was taken.
• If you want the watch to calculate the speed of each lap
(when all of the laps are the same distance), specify the
lap distance for the distance setting (page E-15).
• If you want the watch to calculate the speed of the entire
race, specify the race distance for the distance setting
(page E-15). A speed will be indicated each time you
take a lap reading, but these lap speeds will not indicate
actual speed of the entire race.
To set up the stopwatch to take lap time readings
1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
• If you need to reset the stopwatch to all zeros, press A.
2. Make sure that (lap times) is shown in the lower display.
• If (split times) is displayed, press A to toggle it to .
Lap time
E-21
To perform a lap time measurement
Select lap time ( ) measurement and then perform the
following button operations.
D Start ➝ A Lap* ➝ A Lap* ➝
D Stop ➝ A Reset
* The lap time is released automatically in about 12
seconds.
• You can press A to take lap readings as many times as
you like.
• A lap number (#01 through #99) alternates with the lap
hour value in the upper display while a lap time reading
is displayed. If you take more than 99 lap readings, the
lap number will restart from #00 following lap #99.
• Pressing D to stop elapsed time measurement displays
the time (and speed if a distance is specified) of the final
lap.
Speed (calculated)
Minutes Seconds
1/1000 seconds
Lap number
E-22
Split Time
A split time reading shows the time elapsed since the
beginning of the current time measurement.
• If you want the watch to calculate the speed of the race,
specify the race distance for the distance setting (page
E-15).
• For split time readings, you can specify the total race
distance only. Though the watch will indicate a speed
each time you take a split reading, they will be based on
the total race distance, and so they will not indicate
actual intermediate split speeds.
To set up the stopwatch to take split time readings
1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
• If you need to reset the stopwatch to all zeros, press A.
2. Make sure that (split times) is shown in the lower display.
• If (lap times) is displayed, press A to toggle it to .
Split time
E-23
To perform a split time measurement
Select split time ( ) measurement and then perform
the following button operations.
D Start ➝ A Split ➝ A Split Release* ➝
D Stop ➝ A Reset
* The split time is released automatically if you do not
press A within about 12 seconds.
• You can press A to take split readings as many times
as you like.
• The stopwatch continues elapsed time measurement
internally while a split time reading is displayed.
Pressing
A to release the split will switch the lower
display to the elapsed time measurement, or you also
could press
D to stop elapsed time measurement
instead.
• Pressing D to stop elapsed time measurement displays
the time (and speed if a distance is specified) of the final
split (which is the overall elapsed time).
Hour
Speed (calculated)
Minutes Seconds
1/1000 seconds
E-24
To measure times with the stopwatch
Elapsed Time
Lap Time
Split Time
D
Start
Stop Reset
D ➤ ➤ A
D
Start
(
displayed)
Split Split release Stop
A D A ➤ ➤ ➤
Reset
A ➤
D
Start
(
displayed)
Lap
(Lap01) Stop Reset
D A A ➤ ➤ ➤ A ➤
Lap
(Lap02)
E-25
Countdown Timer
You can set the countdown timer start time within a range
of one minute to 24 hours. An alarm sounds when the
countdown reaches zero.
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C (page E-7).
Auto-repeat off
Start time
(Hours : Minutes)
Seconds
E-26
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm will sound for 10 seconds or
until you stop it by pressing any button.
• The countdown time is reset to its starting value automatically after the alarm stops
if auto-repeat is turned off.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it.
Press D again to resume the countdown.
• To stop a countdown timer operation completely, first pause it (by pressing D), and
then press A. This returns the countdown time to its starting value.
E-27
To configure countdown start time and auto-repeat settings
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A for about three
seconds until the hour setting of the countdown start
time starts to flash. This is the setting mode.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” (page
E-26) to display it.
2. Press C to move the flashing in the sequence shown
below, and select the setting you want to change.
Start Time
(Minutes)
Auto-Repeat
On/Off
Start Time
(Hours)
C C
C
3. Perform the following operations, depending on which setting currently is selected
on the display.
• While the start time setting is flashing, use D (+) and B (–) to change it.
• While the auto-repeat on/off setting is flashing on the display, press D to toggle
auto-repeat on ( ) and off ( ).
Start time
(Hours : Minutes)
Auto-repeat on
E-28
4. Press A to exit the setting mode.
• The auto-repeat on ( ) is displayed on the Countdown Timer Mode screen while
this function is turned on.
E-29
World Time
World Time digitally displays the current time in one of
48 cities (29 time zones) around the world. A simple
operation swaps your Home City with the currently
selected World Time City.
• The times kept in the World Time Mode are
synchronized with the time being kept in the
Timekeeping Mode. If you feel that there is an error in
any World Time Mode time, check to make sure you
have the correct city selected as your Home City. Also
check to make sure that the current time as shown in
the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC
offsets. See the “City Code Table” at the back of this
manual for information about the UTC offsets that are
supported.
• All of the operations in this section are performed in the World Time Mode, which
you enter by pressing C (page E-7).
Currently selected
World Time City
World Time