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Casio 3259 - PRG-250 Manual

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Operation Guide 3259
E-8
E-86 Checking the Current Time in a Different Time Zone
E-86 To enter the World Time Mode
E-86 To view the time in another time zone
E-87 To specify standard time or daylight saving time (DST) for a city
E-88 Illumination
E-88 To turn on illumination manually
E-88 To change the illumination duration
E-90 To turn the auto light switch on and off
E-92 Other Settings
E-92 To turn the button operation tone on and off
E-93 To turn Power Saving on and off
E-94 Troubleshooting
E-98 Specifi cations
E-9
Charging the Watch
The face of the watch is a solar cell that generates power from light. The generated power charges a
built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed
to light.
Charging Guide
Whenever you are not wearing the
watch, leave it in a location where it
is exposed to light.
• Best charging performance is
achieved by exposing the watch to
the strongest light available.
When wearing the watch, make sure
that its face is not blocked from light
by the sleeve of your clothing.
• The watch may enter a sleep state
(page E-14) if its face is blocked
by your sleeve even only partially.
Warning!
Leaving the watch in bright light for charging can cause it to become quite hot.
Take care when handling the watch to avoid burn injury. The watch can become particularly hot
when exposed to the following conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
E-10
Important!
• Allowing the watch to become very hot can cause its liquid crystal display to black out. The
appearance of the LCD should become normal again when the watch returns to a lower temperature.
• Turn on the watch’s Power Saving function (page E-14) and keep it in an area normally exposed to
bright light when storing it for long periods. This helps to ensure that power does not run down.
• Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is
blocked from exposure to light can cause power to run down. Expose the watch to bright light
whenever possible.
E-11
Power Levels
You can get an idea of the watch’s power level by observing the battery power indicator on the display.
Level Battery Power Indicator Function Status
1
(H)
All functions enabled.
2
(M)
All functions enabled.
3
(L)
Illumination, beeper, and sensor operation
disabled.
4
(C)
Except for timekeeping and the
C
(charge)
indicator, all functions and display
indicators disabled.
5 All functions disabled.
• The fl ashing
LOW
indicator at Level 3 (
L
) tells you that battery power is very low, and that exposure to
bright light for charging is required as soon as possible.
• At Level 5, all functions are disabled and settings return to their initial factory defaults. Once the battery
reaches Level 2 (
M
) after falling to Level 5, reconfi gure the current time, date, and other settings.
• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2 (
M
).
• Leaving the watch exposed to direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading temporarily that is higher than the actual battery level. The
correct battery level should be indicated after a few minutes.
Battery power
indicator
Battery power
indicator
E-12
• All data stored in memory is deleted, and the current time and all other settings return to their initial
factory defaults whenever battery power drops to Level 5 and when you have the battery replaced.
Power Recovery Mode
• Performing multiple sensor, illumination, or beeper operations during a short period may cause all of
the battery power indicators (
H
,
M
, and
L
) to start fl ashing on the display. This indicates that the watch
is in the power recovery mode. Illumination, alarm, countdown timer alarm, hourly time signal, and
sensor operations will be disabled until battery power recovers.
• Battery power will recover in about 15 minutes. At this time, the battery power indicators (
H
,
M
,
L
) will
stop fl ashing. This indicates that the functions listed above are enabled again.
• If all of the battery power indicators (
H
,
M
,
L
) are fl ashing and the
C
(charge) indicator also is fl ashing,
it means the battery level is very low. Expose the watch to bright light as soon as possible.
• Even if battery power is at Level 1 (
H
) or Level 2 (
M
), the Digital Compass Mode, Barometer/
Thermometer Mode, or Altimeter Mode sensor may be disabled if there is not enough voltage available
to power it suffi ciently. This is indicated when all of the battery power indicators (
H
,
M
,
L
) are fl ashing.
• Frequent fl ashing of all of the battery power indicators (
H
,
M
,
L
) probably means that remaining battery
power is low. Leave the watch in bright light to allow it to charge.
E-13
Charging Times
Exposure Level (Brightness)
Daily
Operation
*1
Level Change *2
Level 5 Level 4 Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 5 min. 2 hours 13 hours 4 hours
Sunlight through a window (10,000 lux)
24 min. 5 hours 62 hours 17 hours
Daylight through a window on a
cloudy day (5,000 lux)
48 min. 10 hours 125 hours 34 hours
Indoor fl uorescent lighting (500 lux) 8 hours 100 hours – – – – – –
*1 Approximate amount of exposure time required each day to generate enough power for normal daily
operation.
*2 Approximate amount of exposure time (in hours) required to take power from one level to the next.
• The above exposure times all are for reference only. Actual exposure times depend on lighting
conditions.
• For details about the operating time and daily operating conditions, see the “Power Supply” section of
the Specifi cations (page E-101).
E-14
Power Saving
When turned on, Power Saving enters a sleep state automatically whenever the watch is left for a certain
period in an area where it is dark. The table below shows how watch functions are affected by Power
Saving.
• For information about enabling and disabling power saving, see “To turn Power Saving on and off”
(page E-93).
• There actually are two sleep state levels: “display sleep” and “function sleep”.
Elapsed Time in Dark Display Operation
60 to 70 minutes (display sleep) Blank, with
PS
fl ashing Display is off, but all functions are enabled.
6 or 7 days (function sleep) Blank, with
PS
not fl ashing
All functions are disabled, but timekeeping is
maintained.
• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep
state when 6:00 AM arrives, however, it will remain in the sleep state.
• The watch will not enter a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode.
To recover from the sleep state
Move the watch to a well-lit area, press any button, or angle the watch towards your face for reading (page
E-89).
E-15
Mode Reference Guide
Your watch has 10 “modes”. The mode you should select depends on what you want to do.
To do this: Enter this mode: See:
• View the current date in the Home City
• Confi gure Home City and daylight saving time (DST) settings
• Confi gure time and date settings
Timekeeping Mode E-19
• Determine your current bearing or the direction from your current
location to a destination as a direction indicator and angle value
• Determine your current location using the watch and a map
Digital Compass Mode E-25
• View the barometric pressure and temperature at your current location
• View a graph of barometric pressure readings
Barometer/Thermometer
Mode
E-38
• View the altitude at your current location
• Determine the altitude differential between two locations (reference
point and current location)
• Record an altitude reading with the measurement time and date
Altimeter Mode E-46
View information about tide conditions and the Moon phase Tide/Moon Data Mode E-68
Recall records created in the Altimeter Mode Data Recall Mode E-64
Set an alarm time Alarm Mode E-77
Use the stopwatch to measure elapsed time Stopwatch Mode E-80
Use the countdown timer Countdown Timer Mode E-82
View the current time in one of 48 cities (31 time zones) around the globe World Time Mode E-86
2 …


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