Radio controlled atomic timekeeping, Operation guide 5060 – Casio 5060 User Manual

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Operation Guide 5060

2

Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly.

However, when using the watch outside of areas covered by time calibration signals,

you will have to adjust the settings manually as required. See “Configuring Current

Time and Date Settings Manually” for more information.
This section explains how the watch updates its time settings when the city code

selected as the Home City is in Japan, North America, Europe, or China, and is one

that supports time calibration signal reception.

If your Home City Code setting

is this:

The watch can receive the signal from the

transmitter located here:

LON, PAR, ATH

Anthorn (England), Mainflingen (Germany)

HKG

Shangqiu City (China)

TYO

Fukushima (Japan), Fukuoka/Saga (Japan)

HNL, ANC, LAX, DEN, CHI, NYC

Fort Collins, Colorado (United States)

Important!

The areas covered by

HNL and ANC are quite far from the calibration signal

transmitters, so certain conditions may cause reception problems.
When

HNL or HKG is selected as the Home City, only the time and date are

adjusted according to the time calibration signal. You need to switch manually

between standard time and daylight saving time (DST) if required. See “To toggle

the Home City time between standard time and daylight saving time” for information

about how to do this.

Approximate Reception Ranges

Even when the watch is within range of a transmitter, signal reception may be

impossible due to the effects of geographic contours, structures, weather, the time

of year, the time of day, radio interference, etc. The signal becomes weaker at

distances of approximately 500 kilometers, which means that the influence of the

conditions listed above becomes even greater.
Signal reception may not be possible at the distances noted below during certain

times of the year or day. Radio interference may also 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: 500 kilometers (310 miles)
As of January 2008, China does not use Daylight Saving Time (DST). If China does

go to the Daylight Saving Time system in the future, some functions of this watch

may no longer operate correctly.

To get ready for a receive operation

Confirm that the watch is in the Timekeeping Mode. If it isn’t, hold down

1.

C

for

about two seconds to enter the Timekeeping Mode.
Place the watch in a location where signal reception is good.

2.

Position the watch as shown in the

nearby illustration, with 12 o’clock

pointed towards a window. Make

sure there are no metal objects

nearby.
Signal reception normally is better

at night.
The receive operation 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 operation or

move the watch during this time.

Signal reception may be difficult or even impossible under the conditions

described below.

UK and German Signals

Anthorn

500 kilometers

1,500 kilometers

Mainflingen

The Anthorn signal is receivable

within this area.

North American Signal

2,000 miles

(3,000 kilometers)

600 miles

(1,000 kilometers)

Fort Collins

Japanese Signal

Fukushima

500 kilometers

1,000 kilometers

Fukuoka/Saga

Chinese Signal

1,500 kilometers

Changchun

500 kilometers

Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong

12 o’clock

or

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

What you should do next depends on whether you are using Auto Receive or

3.

Manual Receive.

Auto Receive: Leave the watch over night in the location you selected in step 2.

See “Auto Receive” for details.
Manual Receive: Perform the operation under “To perform manual receive”.

Auto Receive

With Auto Receive, the watch performs the receive operation each day

automatically up to six times (up to five times for the Chinese calibration signal)

between the hours of midnight and 5 a.m. (according to the Timekeeping Mode

time). When any receive operation is successful, none of the other receive

operations for that day are performed.
When a calibration time is reached, the watch will perform the receive operation

only if it is in the Timekeeping Mode or World Time Mode. The receive operation is

not performed if a calibration time is reached while you are configuring settings.

To perform manual receive

In the Timekeeping Mode, keep

1.

A

depressed (for about two seconds) as the

x

Second Hand goes through the following sequence.

Moves to the last signal reception result (

Y or N), then to READY (or R for some

models).

The

2.

x

Second Hand indicates the operations the watch is currently performing.

When the x Second

Hand is pointed here:

It means this:

READY (R)

Watch is setting up for reception.

WORK (W)

Reception is in progress.

YES (Y)

Reception was completed

successfully.

NO (N)

Reception failed for some reason.

If signal reception is unstable, the

x

Second Hand

may move between WORK and READY.

The receive operation is complete when the

3.

x

Second

Hand moves to YES (Y) or NO (N) for about five

seconds, and then resumes normal timekeeping.

When the receive operation is successful, the watch

adjusts the time setting accordingly. It does not adjust

the setting if the operation failed.

Note

To interrupt a receive operation and return to the

Timekeeping Mode, press any button.
If the

x

Second Hand is pointing to YES (Y) or NO

(N), you can return to the Timekeeping Mode by

pressing A.

To check the result of the latest receive operation
In the Timekeeping Mode, press A.

The

x

Second Hand will move to YES (Y) for five

seconds if the latest receive operation was successful,

or NO (N) if it was not. After that, normal timekeeping

will resume.

Note

The

x

Second Hand will indicate NO (N) if you have

adjusted the time or date setting manually since the

latest receive operation.
If the

x

Second Hand is pointing to YES (Y) or NO (N),

you can return to the Timekeeping Mode by pressing A.

Radio-controlled Atomic Timekeeping Precautions

Strong electrostatic charge can result in the wrong time setting.

Even if a receive operation is successful, certain conditions can cause the time

setting to be off by up to one second.
The watch is designed to update the date and day of the week automatically for

the period January 1, 2000 to December 31, 2099. Updating of the date by signal

reception will no longer be performed starting from January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time

with the precision noted in “Specifications”.
The receive operation is disabled under any of the following conditions.

While power is at Level 2 or lower

While the watch is in the power recovery mode

When the watch is in the function sleep state (power saving)

While a countdown time operation is in progress

A receive operation is cancelled if an alarm sounds while it is being performed.



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