User manual

Operation Guide 3770 3771 4308 4309
1
MO0505-EA
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
About This Manual
The operational procedures for Modules 3770, 3771,
4308, and 4309 are identical. All of the illustrations in
this manual show Modules 3770 and 4308.
Button operations are indicated using the letters shown
in the illustration.
Most of the display examples in this manual show only
the digital display, without the analog hands.
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.
Modules 3770 and 4308
Modules 3771 and 4309
Stopwatch Mode Countdown Timer Mode
Alarm Mode
Timekeeping Mode
Press C.
World Time Mode
Hand Setting Mode
General Guide
Press C to change from mode to mode.
In any mode, press B to illuminate the face of the watch.
Radio-controlled Timekeeping
This watch receives a time calibration signal and updates 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.
Minute hand
Hour hand
Day of week
Modules 3770 and 4308 Modules 3771 and 4309
Seconds
Month – Day
Hour hand
Day of week
Current Time Setting
This watch automatically adjusts its time setting in accordance with a time calibration
signal. You can also perform a manual procedure to set the time and date, when
necessary.
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.
When using the watch outside the ranges of the time signal transmitters, you have to
adjust the current time setting manually as required. See “Timekeeping” for more
information about manual time setting.
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
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use D (east) and B (west) to scroll through the city
codes until the one you want to use as your Home City
is displayed.
The following are the city codes for major cities in the
Western Europe time zones.
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City code
Modules 3770 and 4308
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Modules 3771 and 4309
City code
City
City
Other major cities in same time zone
Code
Lisbon
London
Barcelona
Madrid
Paris
Milan
Rome
Berlin
Stockholm
Athens
Dublin, Casablanca, Dakar, Abidjan
Amsterdam, Algiers, Hamburg, Frankfurt,
Vienna
Cairo, Jerusalem, Helsinki, Istanbul,
Beirut, Damascus, Cape Town
LIS
LON
BCN
MAD
PA R
MIL
ROM
BER
STO
AT H
3. Press A to exit 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 (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.
To display the digital time and last signal screen
In the Timekeeping Mode, press A to cycle through the digital time screens as
shown below.
In the Timekeeping Mode, press D to display the last signal screen. The last signal
screen shows the time and date of the last successful time calibration signal
reception.
Press A.
Hour : Minutes
PM indicator
Press D.
Last Signal
Screen
Reception date
A
Reception time
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 receives the time calibration signal automatically five or
six times a day. When any auto receive is successful, the remaining auto receive
operations are not performed. For more information, see “About Auto Receive”.
Manual Receive
Manual receive lets you start a time calibration signal reception with the press of a
button. For more information, see “To perform manual receive”.
Important!
When getting ready to receive the time calibration signal, 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.
Resin Band
Metal Band
Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
office
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

Summary of content (5 pages)