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Operation Guide 5196/5252/5301
E-29
To perform manual receive
Hold down 1. A for at least two seconds.
The
x
x
Second Hand will fi rst indicate the last receive
results as either Y (YES) or N (NO), and then move
to RC (Receive in progress) to indicate that signal
reception has started.
The watch’s time setting is adjusted automatically 2.
whenever a receive operation is successful.
Note
It can take as long as 30 seconds for signal reception
x
conditions to stabilize.
If you want to stop a receive operation at any time,
x
press A.
If reception fails for some reason, check the
x
surrounding area and eliminate possible causes for
failure and then try again. See “To get ready for a
receive operation” (page E-26).
@
E-28
What you should do next depends on whether you are using Auto Receive or 2.
Manual Receive.
Auto Receive: Leave the watch over night in the location you selected in step 1.
x
See “Auto Receive” below for details.
Manual Receive: Perform the operation under “To perform manual receive” on
x
page E-29.
Auto Receive
With Auto Receive, the watch performs the receive operation each day
x
automatically. Reception times depend on the location settings: 2:00, 3:00, and
4:00 a.m. for JP (TYO, TOKYO), and 1:00, 2:00, and 3:00 a.m. for CN (HKG,
HONG KONG). When any receive operation is successful, none of the other receive
operations for that day are performed.
When a calibration time is reached, the watch will perform the receive operation.
x
The receive operation is not performed if a calibration time is reached while you are
confi guring settings.
E-27
Signal reception may be diffi cult or even impossible under the conditions x
described below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
offi ce
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near
high-tension
power lines
Among
or behind
mountains
E-26
To get ready for a receive operation
Place the watch in a location where signal reception is good.1.
Position the watch as shown in the nearby x
illustration, with the part of the dial between
7 and 8 o’clock pointed towards a window.
Make sure there are no metal objects nearby.
Signal reception normally is better at night.
x
The receive operation takes from three to x
eight minutes, but in some cases it can take
as long as 18 minutes. Take care that you do
not perform any button operation or move the
watch during this time.
7 to 8 o’clock
E-25
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) transmitter: 500 kilometers (310 miles)
−
Shangqiu (China) transmitter: 500 kilometers (310 miles) −
As of December 2010, China does not use Daylight Saving Time (DST). If China x
does 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-24
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-23
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 “Confi guring Time and
Date Settings Manually” (page E-35) 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:
CN (HKG, HONG KONG) Shangqiu City (China)
JP (TYO, TOKYO) Fukushima (Japan), Fukuoka/Saga (Japan)
OFF No signal received
E-22
To recover from the sleep state
Move the watch to a well-lit area, press the A button, or pull out the crown to the
fi rst click.
It can take up to eight minutes for the watch to resume normal operation after
x
recovering from the sleep state. Do not perform any button operations during that
time.
E-21
Power Saving
A Power Saving feature causes the watch to enter a sleep state automatically
whenever it is left for a certain period in an area where it is dark.
How Power Saving works
The watch will enter the sleep state if it is left in a dark location for about one week.
In the sleep state:
x
All hands stop at 12 o’clock. −
Auto Receive is disabled. −
Internal timekeeping continues to operate normally. −
The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch x
is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep
state.
E-20
Charging Times
Exposure Level (Brightness)
Daily
Operation
*1
Level Change *2
Level 4 Level 3 Level 2 Level 1
Outdoor sunlight (50,000 lux) 8 minutes 2 hours 25 hours
Window sunlight (10,000 lux) 30 minutes 4 hours 93 hours
Window sunlight on cloudy day
(5,000 lux)
48 minutes 6 hours 151 hours
Indoor fl uorescent lighting
(500 lux)
8 hours 59 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-54).