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Operation Guide 5098/5099/5101
E-19
To get ready for a receive operation
The antenna of this watch is located on its 12 o’clock side. Position the watch with 1.
12 o’clock facing towards a window as shown in the nearby illustration. Make sure
there are no metal objects nearby.
12 o’clock
or
Signal reception normally is better x
at night.
The receive operation takes from x
two to seven minutes, but in some
cases it can take as long as 14
minutes. Take care that you do not
perform any button operation or
move the watch during this time.
E-18
Even when the watch is within range of a transmitter, signal reception may be x
impossible due to the effects of geographic contours, structures, weather, the time
of year, the time of day, radio interference, etc. The signal becomes weaker at
distances of approximately 500 kilometers, which means that the infl uence of the
above conditions becomes even greater.
Signal reception may not be possible at the distances noted below during certain
x
times of the year or day. Radio interference may also cause problems with
reception.
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
−
Shangqiu (China) transmitter: 500 kilometers (310 miles) −
As of January 2011, China does not use Daylight Saving Time (DST). If China does x
go to the Daylight Saving Time system in the future, some functions of this watch
may no longer operate correctly.
Using this watch in a country covered by a time calibration that is different from the
x
countries it supports may result in incorrect time indication due to local application
of summer time, etc.
E-17
Approximate Reception Ranges
Japanese Signal Chinese Signal
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/Saga
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
E-16
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
However, when using the watch outside of areas covered by time calibration signals,
you will have to adjust the settings manually as required. See “Specifying Your
Current Location and Setting the Time” (page E-27) for more information.
This section explains how the watch updates its time settings when the city name
selected as the current location is in Japan or China, and is one that supports time
calibration signal reception.
If your location setting is this:
The watch can receive the signal from the transmitter
located here:
HONG KONG (HKG) Shangqiu City (China)
TOKYO (TYO) Fukushima (Japan), Fukuoka/Saga (Japan)
E-15
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for one
week in an area where it is dark.
What happens when the watch is in the sleep state
All regular timekeeping hands move to 12 o’clock and stop. x
n
Minute Hand (elapsed time) moves to 0 and stops.
Auto Receive becomes disabled. x
Internal timekeeping functions continue to operate normally. x
To recover from the sleep state
Move the watch to a well-lit area or press any button.
It can take up to 14 minutes for the watch to recover from the sleep state to normal
x
operation. Do not perform any button operations during that time.
E-14
Charging Times
Exposure Level (Brightness)
Daily
Operation *1
Level Change *2
Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 8 minutes 3 hours 35 hours
Window sunlight (10,000 lux) 30 minutes 8 hours 134 hours
Window sunlight on cloudy day
(5,000 lux)
48 minutes 13 hours 216 hours
Indoor fl uorescent lighting (500 lux) 8 hours 149 hours – – –
1 Approximate exposure each day to generate power for normal daily operation. *
2 Approximate exposure to take power up one level. *
The above times are for reference only. Actual times depend on lighting conditions.
x
For details about the operating time and daily operating conditions, see the “Power x
Supply” section of the Specifi cations (page E-46).
E-13
Level Hand Movement Function Status
1 Normal. All functions enabled
2
x
x
Second Hand moves at two-second
intervals.
Time calibration signal reception
disabled
3
z
z
Hour Hand, x
x
Second Hand and
c
c
Minute Hand stopped at 12 o’clock.
All functions disabled
When power drops to Level 3, all functions will be disabled but the watch will x
continue to keep time internally for about one week. If you recharge the battery
suffi ciently during this period, the analog hands will move automatically to the
correct setting and regular timekeeping will resume. After one week, all settings
(including timekeeping) will be cleared. Recharging the battery will reset all settings
to their initial factory defaults.
E-12
Power Levels
You can get an idea of the watch’s power level by
observing the movement of the
x
Second Hand in the
regular timekeeping.
If the
x
x
Second Hand is moving normally at one-second
intervals, power is at Level 1.
If the
x
x
Second Hand is moving at two-second intervals,
power is at Level 2, which is quite low. Expose the watch
to light as soon as possible so it can charge.
Moves at two-second
intervals.
@
B +
E-11
Important!
Keep the watch in an area normally exposed to bright light when storing it for long
x
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 x
such a way that it is blocked from exposure to light can cause power to run down.
Make sure that the watch is exposed to bright light whenever possible.
E-10
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-15) if its face is
x
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
x
Too close to an incandescent lamp x
Under direct sunlight x