Operation guide 3159 – Casio 3159 User Manual

Page 2

Operation Guide 3159

• Proper signal reception can be difficult or even impossible under the conditions listed

below.

Inside or
among
buildings

Inside a
vehicle

Near a
construction
site, airport,
or other
sources of
electrical
noise

Near high-
tension power
lines

Near
household
appliances,
office
equipment,
or a mobile
phone

Among or
behind
mountains

• Signal reception normally is 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.

• The time calibration signal the watch will attempt to pick up depends on its current

Home City code setting as shown below.

Home City Code

LIS, LON, MAD, PAR, ROM,

BER, STO, ATH, MOW*

HKG, BJS

TPE, SEL, TYO

HNL*, ANC*, YVR, LAX, YEA,

DEN, MEX, CHI, MIA, YTO,

NYC, YHZ, YYT

Frequency

60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz

60.0 kHz

Transmitter

Anthorn (England)
Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan)
Fukuoka/Saga (Japan)

Fort Collins, Colorado
(the United States)

* The areas covered by the HNL, ANC, and MOW city codes are quite far from the

time calibration signal transmitters, and so certain conditions may cause problems
with signal reception.

• Calibration signal reception is disabled while a countdown timer operation is in

progress.

Approximate Reception Ranges

U.K. and German Signals

Anthorn

Mainflingen

1,500 kilometers

500 kilometers

The Anthorn signal
is receivable within
this area.

North American Signal

Fort Collins

2,000 miles
(3,000 kilometers)

600 miles
(1,000 kilometers)

Signals are receivable in the Taiwan area when reception conditions are good.

Shangqiu

1,000 kilometers

Fukuoka/Saga

500 kilometers

Fukushima

500 kilometers

Changchun

Beijing

1,500 kilometers

Shanghai

Chengdu

Japan Signals

China Signal

Hong Kong

• Signal reception may not be possible at the distances noted below during certain

times of the year or day. Radio interference also may cause problems with reception.

Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers
(310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
Shangqiu (China) transmitter: 1,500 kilometers (910 miles)

• Even when the watch is within the reception range of the transmitter, signal

reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.

• Signal reception is affected by weather, atmospheric conditions, and seasonal

changes.

• See the information under “Signal Reception Troubleshooting” if you experience

problems with time calibration signal reception.

About Auto Receive
The watch receives the time calibration signal automatically up to six times a day
(five times a day for the Chinese calibration signal). When any auto receive is
successful, the remaining auto receive operations are not performed. The reception
schedule (calibration times) depends on your currently selected Home City, and
whether standard time or Daylight Saving Time is selected for your Home City.

2:00 am
3:00 am
3:00 am
4:00 am

4:00 am
5:00 am
5:00 am
Midnight*

3:00 am
4:00 am
4:00 am
5:00 am

5:00 am
Midnight*
Midnight*
1:00 am*

4:00 am
5:00 am
5:00 am
Midnight*

Midnight*
1:00 am*
1:00 am*
2:00 am*

5:00 am
Midnight*
Midnight*
1:00 am*

1:00 am*
2:00 am*
2:00 am*
3:00 am*

Standard Time
Daylight Saving Time
Standard Time
Daylight Saving Time

1:00 am
2:00 am
2:00 am
3:00 am

3:00 am
4:00 am
4:00 am
5:00 am

Midnight*
1:00 am*
1:00 am*
2:00 am*

2:00 am*
3:00 am*
3:00 am*
4:00 am*

LIS
LON
MAD
PAR
ROM
BER
STO
ATH

MOW

Your Home City

Auto Receive Start Times

*Next day

HKG
BJS
TPE
SEL
TYO
HNL

ANC

YVR
LAX

YEA

DEN
MEX

CHI

MIA
YTO

NYC

YHZ
YYT

Standard Time and
Daylight Saving Time
Standard Time

Standard Time and
Daylight Saving Time

1:00 am

Midnight

2:00 am

1:00 am

3:00 am

2:00 am

4:00 am

3:00 am

5:00 am

4:00 am

5:00 am

Note

• When a calibration time is reached, the watch will receive the calibration signal only

if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are configuring settings.

• Auto receive 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 receive the signal easily.

• The watch receives the calibration signal for two to seven minutes everyday when

the time in the Timekeeping Mode reaches a calibration time. Do not perform any
button operation within seven minutes before or after the calibration times. Doing so
can interfere with correct calibration.

• Remember that reception of the calibration signal depends on the current time in the

Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is the correct time.

About the Signal Strength Indicator
The signal strength 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. The signal strength indicator is displayed while an auto or
manual receive operation is in progress.

Strong

Weak

• Even in an area where signal strength is strong, it takes about 10 seconds for signal

reception to stabilize enough for the signal strength indicator to indicate signal
strength.

l ll

lll

l l l

lll

RCVD indicator

Signal strength indicator

• Use the signal strength indicator as a guide for checking signal strength and for

finding the best location for the watch during signal receive operations.

• Following reception of the time calibration signal and calibration of the watch’s time

setting, the RCVD indicator will remain on the display in all modes. The RCVD
indicator will not be displayed if signal reception was unsuccessful or after you adjust
the current time setting manually.

• The RCVD indicator is displayed only when the watch is able to receive both time

and date data successfully. It does not appear when only time data is received.

• The RCVD indicator indicates that at least one of the auto calibration signal receive

operations was successful. Note, however, that the RCVD indicator disappears from
the display each day when the first auto receive operation of the day is performed.

To perform manual receive

1. Enter the Timekeeping Mode.
2. Hold down D for about two seconds until the RCVD

indicator starts to flash on the display. This indicates
that manual receive is in progress.

• Time calibration signal reception takes from two to

seven minutes. Take care that you do not perform
any button operations or move the watch during this
time.

• If the receive operation is successful, the reception

date and time appear on the display, along with the

GET

indicator.

3. After manual receive is complete, press D to return to

normal timekeeping.

• The watch also will return to normal timekeeping if you

do not perform any button operation for about one or
two minutes.

Receiving

Receive successful

l ll

lll

l l l

lll

Reception date

• If the latest reception fails but a previous reception was

successful during the current day, the RCVD indicator
will be on the display.

Note

• To interrupt a receive operation and return to normal

timekeeping, press D.

If there was a previously
successful reception

Receive failed