Casio 3772 User Manual
MO0505-EA
Operation Guide 3772
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.
••
• This watch does not have a time zone that corresponds to the Greenwich
••
Mean Time differential of –3.5 hours. Because of this, the radio-controlled
timekeeping and World Time functions will not display the correct time for
Newfoundland, Canada.
About This Manual
• 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.
General Guide
• Press C to change from mode to mode.
• In any mode, press B to illuminate the face of the watch.
Timekeeping Mode
Press C.
World Time Mode
▲
▲
Radio-controlled Atomic Timekeeping
Hour hand
Minute hand
Day of week
Seconds
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 U.S. time signal transmitter, 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
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City code
:New York, Detroit, Boston, Montreal
NYC
: Halifax
YHZ
:St. Johns
YYT
• Note that this watch does not have a city code that corresponds to Newfoundland.
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.
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 in the United States (Fort Collins,
Colorado).
• The U.S. time calibration signal can be picked up by the
watch while in North America
The term “North America” in this manual refers to the
*
area that consists of Canada, the continental United
Month – Day
States, and Mexico.
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
North America.
:Vancouver
YVR
:Los Angeles, San Francisco, Las Vegas,
LAX
Seattle/Tacoma, Tijuana
: Edmonton
YEA
:Denver, El Paso, Culiacan
DEN
:Mexico City
MEX
:Winnipeg
YWG
:Chicago, Houston, Dallas/Fort Worth, New
CHI
Orleans
:Miami
MIA
:Toronto
YTO
.
*
Stopwatch Mode Countdown Timer Mode
▲
Hand Setting Mode
▲
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.
▲
Press D.
Last Signal
Screen
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 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.
Resin Band
• 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 listed
below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
▲
A
Metal Band
▲
Reception time
Near a
construction
site, airport, or
other sources
of electrical
noise
Alarm Mode
PM indicator
Hour : Minutes
Near hightension
power lines
Reception date
Among or
behind
mountains
▲
1
Operation Guide 3772
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from 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 operations or move the watch during this time.
600 miles
• Under good reception conditions, signal reception is possible within a radius of
about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.
• At distances further than about 600 miles (1,000 kilometers) from the Fort Collins
transmitter, signal reception may not be possible during certain times of year or
times of day. Radio interferance may also cause problems with reception.
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
When auto receive is turned on, the watch automatically starts to receive the time
calibration signal when the time in the Timekeeping Mode reaches 0:00 a.m., 1:00
a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will
also perform an additional auto receive at 5:00 a.m. if none of the regularly scheduled
auto receive operations are successful.
When any auto receive is successful, the remaining auto receive operations are not
performed.
Note
• Auto receive is performed only if the watch is in the Timekeeping Mode or World
Time Mode when one of the calibration times is reached. It is not performed if a
calibration time is reached while an alarm is sounding, or while you are configuring
settings (while settings are flashing on the display).
• Auto receipt of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can easily receive the signal.
• When auto receive is turned on, the watch receives the calibration signal for two to
seven minutes everyday when the time in the Timekeeping Mode reaches each of
the five calibration times. Do not perform any button operation within seven minutes
before or after any of the five calibration times. Doing so can interfere with correct
calibration.
• Remember that reception of the calibration signal depends on the time kept in the
digital display. Reception will be performed whenever the display shows one of the
five calibration times, regardless of whether or not the displayed time is actually the
correct time.
• Calibration signal reception is disabled while a countdown timer operation is in
progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.
Receiving indicator
Weak
(Level 0)
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal reception.
• The Level 3 receiving indicator remains on the display in all modes following
reception of the time calibration signal and calibration of the watch’s time setting.
The Level 3 receiving indicator is not displayed if signal reception was unsuccessful
or after manual adjustment of the current time setting.
• The Level 3 receiving indicator indicates that at least one of the five calibration
signal receive operations was successful. Note, however, that the Level 3 receiving
indicator is cleared from the display at 0:00 a.m. each day.
To perform manual receive
• Time calibration signal reception normally takes from two to seven minutes. Take
care that you do not perform any button operations or move the watch during this
time.
• After signal reception is complete, the display of the watch changes to the last signal
screen.
Note
• To interrupt a reception and return to the Timekeeping Mode, press D.
• If reception is unsuccessful, the message
two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the last signal or
screen by pressing D.
• Calibration signal reception is disabled while a countdown timer operation is in
progress.
1.Place the watch on a stable surface so its top (12
o’clock side) is facing towards a window.
2.In the Timekeeping Mode, hold down D for about two
seconds until the watch beeps.
3.After you release D the display will show the current
time and the letters
reception is in progress.
2,000 miles
Fort Collins
Strong
(Level 3)
RC!. This indicates that signal
ERR appears on the display for one or
ERR screen to the normal timekeeping
To turn auto receive on and off
On/Off status
4. Press A to exit the setting screen.
• To return to the Timekeeping Mode from the last signal screen, press D.
• For information about city codes that support signal reception, see “To set your
Home City”.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 3
receiving
indicator does
not appear on
the display.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
1.In the Timekeeping Mode, press D to display the last
signal screen.
•
The watch will automatically return to the Timekeeping
Mode if you do not perform any button operation for one
or two minutes after displaying the last signal screen.
2.Hold down A until the current auto receive setting
flashes on the display. This is the setting screen.
• If the auto receive setting does not appear when you
hold down A, it means that the city code currently
selected for the Home City is for an area that does not
support calibration signal reception. You cannot turn
auto receive on or off in this case.
3.
Use D to turn auto receive on
Probable Cause
• The watch is not in the Timekeeping
Mode.
• Your current Home City is not one of the
following city codes: YVR, LAX,
YEA, DEN, MEX, YWG, CHI,
MIA, YTO, NYC, YHZ, or YYT.
• A countdown timer operation is in
progress.
• You changed the time setting manually.
• You were performing some button
operation during the auto receive.
• Even if reception is successful, the
Level 3 receiving indicator disappears
every day at 0 a.m.
• If the time is one hour off, the DST
setting may be incorrect.
• The Home City code setting is not
correct for the area where you are using
the watch.
• Enter the Timekeeping Mode
and try again.
• Select YVR, LAX, YEA,
DEN, MEX, YWG, CHI,
MIA, YTO, NYC, YHZ, or
YYT as your Home City.
• Stop the countdown timer
operation.
• Perform manual receive or
wait until the next auto signal
receive is performed.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
(ON)
or off
(OFF).
What you should do
World Time
The World Time Mode digitally displays the current time in
48 cities (29 time zones) around the world.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• The watch will perform a signal reception even if it is in
City code
Current time in
selected city
To view the time in another city
While in the World Time Mode, press D to scroll through the city codes (time zones)
to the east.
• For full information on city codes, see the “City Code Table”
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
• Note that you cannot use the World Time Mode to change the DST setting of the
Home City code you currently have selected in the Timekeeping Mode. See “To
change the Daylight Saving Time (summer time) setting” for information about
turning the Home City code DST setting on and off.
• The DST indicator will appear on the display whenever you display a city code for
which Daylight Saving Time is turned on.
• Note that the DST/Standard Time setting affects only the currently displayed city
code. Other city codes are not affected.
the World Time Mode when a calibration time is
reached. If this happens, the World Time Mode time
settings will be adjusted in accordance with the
Timekeeping Mode’s Home City time.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
1.In the World Time Mode, use D to display the city code
(time zone) whose Standard Time/Daylight Saving Time
setting you want to change.
2.Hold down A to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
2
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