Operation Guide 2734 58 3748 9
About This Manual
Modules 2734 and 2758
Modules 3748 and 3749
• Press C to change from mode to mode.
• In any mode, press B to illuminate the display.
Day of week
Month – Day
• When using the watch that is outside of the range of the transmitters in Rugby and
Mainflingen, you need to manually adjust the time as required. See "Timekeeping"
for information about manual settings.
• The analog time of this watch is synchronized with the digital time. Because of this,
the analog time setting is automatically adjusted whenever you change the digital
setting. See "Analog Timekeeping" for more information.
To set your Home City
• The following are the city codes for major cities in the Western Europe time
: Paris, Berlin, Milan, Rome, Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid
4. Press A twice to exit the setting screen.
• The first press of A displays the 12/24-hour setting screen. Pressing A again
exits the setting screen.
• Normally, your watch should show the correct time as soon as you select your
Home City code. If it does not, it should adjust automatically after the next auto
receive operation (in the middle of the night). You can also perform manual receive
or you can set the time manually.
• If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.
• See "Transmitters" for details about the transmitter indicator.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• Auto Receive
With auto receive, the watch automatically picks up the time calibration signal five
times a day at 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more
information, see "About Auto Receive".
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press of
a button. For more information, see "To perform manual receive".
• The operational procedures for Modules 2734, 2758,
3748, and 3749 are identical. All of the illustrations in
this manual show Modules 2734 and 2758.
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the "Reference" section.
World Time Mode
Hand Setting Mode
This watch receives a time calibration signal and update
its time setting accordingly. The time calibration signal
includes both Standard Time and Daylight Saving Time
(summer time) data.
• This watch is designed to pick up the time calibration
signal transmitted from Rugby, England and the signal
from Mainflingen, Germany.
Current Time Setting
This watch automatically adjusts its digital time setting in
accordance with a time calibration signal. You can also
perform a manual procedure to set the time and date,
• The first thing you should do after purchasing this watch
is to set your Home City, which is the city where you will
normally use the watch. For more information, see "To
set your Home City" below.
1. In the Timekeeping Mode, hold down A until the
transmitter indicator (
flash, which indicates the setting screen.
• If the displayed transmitter indicator shows
, use D to display
something other than
before advancing to the next step.
2. Press C to display the city code setting screen.
3. Use D(east) and B(west) to select the city code you
want to use as your Home City.
• Position the watch as shown in the nearby illustration, with its 12 o'clock side facing
towards a window. Make sure there are no metal objects nearby.
• The watch should not be on its side or facing the wrong way.
• Proper signal reception can be difficult or even impossible under the conditions
) starts to
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to five minutes, but in some cases
it can take as long as 12 minutes. Take care that you do not perform any button
operations or move the watch during this time.
• This watch is designed to receive the time calibration signal transmitted from
Rugby, England and the signal from Mainflingen, Germany. Signal reception is
possible within the area represented by a circle with a radius of about 1,500
• At distances further than about 500 kilometers from a transmitter, signal reception
may not be possible during certain times of year or times of day. Radio interference
may also cause problems with reception.
• See the information under "Signal Receive Troubleshooting" if you experience
problems with time calibration signal reception.
Date Alert Mode
Time Recorder Mode
site, airport, or
or a mobile