Operation Guide 4378 4379
4
Analog Timekeeping
The analog time of this watch is synchronized with the digital time
setting is adjusted automatically whenev
Note
• The hands for the analog timepiece mo
the follo
When you change the digital time setting manually
When the digital time setting is changed by time calibration signal reception
When you change the Home City code and/or DST setting
• If the analog time does not match the digital time for any reason, use the procedure
described under “ T” to match the analog setting to the digital
setting.
• Whenev
make sure you adjust the digital setting first.
• Depending on how m
time, it ma
T
1. In the C four times to enter
the Hand Setting Mode.
2. Hold down A until
starts to flash, which
indicates the setting screen.
• The second hand will mov
o’ clock position, where it will stop
3. If the second hand is not pointing precisely at 12 o’clock
at this time, use D to adjust its position.
• Each press of D causes the second hand to adv
by one second.
4. Press C.
adjustment of hour and minute hands is selected.
5.D and B to adjust the analog setting as described below
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When you want to do this:
Mov
forw
Perf
• Press D.
Move the hand setting bac
10 seconds
Move the hand setting a short
way f
Move the hand setting a
short way back at high speed
Move the hand setting a long
way f
• Press B.
• Hold down D.
• Release D when the hands reach the setting
you want.
• Hold doB.
• Release B when the hands reach the setting
you want.
• While holding down D to move the hands at
high-speed, press B to lock the high-speed
hand movement.
• T
button.
• Hand mov
hour hand makes one full (12-hour) re
Move the hand setting a long
way bac
• While holding down B to move the hands at
high-speed, press D to lock the high-speed
hand movement.
• T
button.
• Hand mov
hand makes one full (12-hour) re
6. Press A to exit the setting screen.
• The minute hand will be adjusted slightly to match the seconds when y
setting screen.
• TC.
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Auto Return Features
• If you leav
without performing any oper
• If you leav
without performing any oper
Scrolling
The B and D buttons are used in various modes and setting screens to scroll
through data on the display
operation scrolls through the data at high speed.
Initial Screens
When you enter the
last exited the mode appears first.
Radio-controlled Timekeeping
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal bounces off the ionosphere.
as changes in the reflectivity of the ionosphere, as well as mo
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day ma
impossible
• Even if the time calibr
the time setting to be off by up to one second.
• The current time setting in accordance with the time calibration signal takes priority
ov
• The watch is designed to automatically update the date and da
period January 1, 2000 to December 31, 2099.
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receiv
years.
• Though this watch is designed to receiv
and date data (year
data only
• Normally
included in the received time calibration signal.
howe
the time of signal reception.
• If you are in an area where proper time calibration signal reception is impossib
watch keeps time within ±20 seconds a month at normal temperature.
• If y
setting is wrong after signal reception, check your Home City code
time), and auto receive settings.
settings.
Setting
City code
DST (summer time)
Auto receiv
Initial Factory Default
BER (Berlin) (Module 4378) LON (London) (Module 4379)
(Auto s
(Auto receiv
T
This watch is designed to receive the time calibration signal tr
England and the signal from Mainflingen, Germany
• The follo
first.
Module 4378
In this case:
The first signal auto search operation
after factory default settings are in eff
or after the city code has been changed
Any case other than the abov
The watch does this:
1.
2. If the Mainflingen signal cannot be
received, chec
1.
signal first.
2.
cannot be received, chec
signal.
• T
back cov
engra
In this case:
The first signal auto search operation
after factory default settings are in eff
or after the city code has been changed
Any case other than the abov
The watch does this:
1.
2.
checks the Mainflingen signal.
1.
signal first.
2.
cannot be received, chec
signal.
4378
4379
Module 4379
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1.
reset to 00
without changing the minutes.
• The day of the w
month, and day) settings.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar mak
lengths and leap years.
it except after you ha’ s battery replaced.
• The current time f
calculated in accordance with the Greenwich Mean
city
• GMT diff
(UTC*) data.
* UTC is the world-wide scientific standard of timekeeping. It is based upon carefully
maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’ s rotation.
The reference point for UTC is Greenwich, England.
12-hour/24-hour Timekeeping
The 12-hour/24-hour timekeeping f
applied in all other modes.
• With the 12-hour fP (PM) indicator appears on the display for times in the
range of noon to 11:59 p
midnight to 11:59 a.m.
• With the 24-hour f
any indicator
Illumination Precautions
An LED (light-emitting diode) and a light guide panel illuminate the digital displa
easy reading in the dark.B to illuminate the display f
second.
• The illumination provided b
sunlight.
• Illumination automatically turns off whenev
• F
