Casio 2869, 2870 World Time, Time Recorder, Alarms, Signal Receive Troubleshooting, Note, Note, Problem, Problem, (Level 1) Weak, Probable Cause, Probable Cause, , or, code

Receiving indicator

Operation Guide 2869 2870

•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 kilometers.

•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.

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 operation at 5:00 a.m. if none of the regularly scheduled auto receive operations are successful.

Note

•Auto receive is on whenever the transmitter mode setting is anything other than OFF. See “Transmitters” for more information.

•The auto receive operation 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 five minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Do not perform any button operation within five minutes before or after any one of the 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. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time is actually the correct time.

•When two, three, four, or five receptions are successful, the watch uses the data of the last reception for calibration. When only one reception is successful, the watch uses the data of the successful reception.

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 (Level 1) Weak Strong (Level 4)

•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 receive operations.

•The Level 4 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 4 receiving indicator is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.

•The Level 4 receiving indicator is displayed only when the watch is able to successfully receive both time and date data. It does not appear when only time data is received.

•The Level 4 receiving indicator indicates that at least one of the calibration signal receive operations was successful. Note, however, that the Level 4 receiving indicator is cleared from the display at 3:00 a.m. each day.

To perform manual receive

1. Place the watch on a stable surface so its top (12 o’clock side) is facing towards a window.

• Note that signal reception is poor when the 12 o’clock side of the watch is not facing towards a window.

2. In the Timekeeping Mode (Current Time screen), hold down Dfor about two seconds until the watch beeps.

3. Release D and the message RC! appears to indicate that signal reception has started.

• Time calibration signal reception takes from two to five 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 receive operation and return to the Timekeeping Mode, press D.

•If the receive operation is unsuccessful, the message ERR appears on the display for about one or two minutes. After that, the watch returns to the Timekeeping Mode.

•You can also change from the Last Signal or ERR screen to the normal timekeeping screen by pressing D.

Signal Receive Troubleshooting

Check the following points whenever you experience problems with calibration signal reception.

Problem	Probable Cause	What you should do
Cannot perform	• The watch is not in the Timekeeping Mode.	• Enter the Timekeeping Mode
manual receive.	• Your current Home City is not one of the	and try again.
	following city codes:	• Select LON, PAR, or BER
	LON, PAR, or BER.	as your Home City.
	• The transmitter mode is incorrect.	• Select the transmitter mode
		appropriate for your current
		location.
Auto receive is	• The transmitter mode is incorrect.	• Select the transmitter mode
turned on, but	• You changed the time setting manually.	appropriate for your current
the Level 4	• The watch was not in the Timekeeping	location.
receiving	or World Time Mode, or you performed	• Perform manual signal receive
indicator does	some button operation during the auto	or wait until the next auto
not appear on	receive operation.	signal receive operation is
the display.		performed.

Problem	Probable Cause	What you should do
Auto receive is	• Even if receive is successful, the Level 4	• Perform manual signal receive
turned on, but	receiving indicator disappears every day	or wait until the next auto
the Level 4	at 3 am.	signal receive operation is
receiving	• Time data (hour, minutes, seconds) only	performed.
indicator does	was received during the last receive	• Check to make sure the watch
not appear on	operation. The Level 4 receiving	is in a location where it can
the display.	indicator appears only when time data	receive the signal.
	and date data (year, month, day) are
	both received.
Time setting is	• If the time is one hour off, the DST	• Change the DST setting to
incorrect	setting may be incorrect.	Auto DST.
following signal	• The Home City code setting is not	• Select the correct Home City
reception.	correct for the area where you are using	code.
	the watch.

•For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Timekeeping Precautions”.

World Time

The World Time shows the current time in 30 cities (29 time zones) around the world.

• For full information on city codes, see the “City Code Table”.• The current time for all city codes in the World Time

	Mode is calculated in accordance with the Greenwich
	Mean Time (GMT) differential for each city, based on the
City code	your Home City time setting.
	• All of the operations in this section are performed in the

Home city time World Time Mode, which you enter by pressing C.

Current time in the selected city code

To view the time in another city code

While in the World Time Mode, press Dto scroll through the city codes (time zones) to the east or B to scroll to the west.

•If the current time shown for a city is wrong, check your Timekeeping Mode time and Home City settings and make the necessary changes.

To toggle a city code time between Standard Time and Daylight Saving Time

	1. In the World Time Mode, use Band D to display the
DST indicator	city code (time zone) whose Standard Time/Daylight
	Saving Time setting you want to change.
	2. Hold down Ato toggle Daylight Saving Time (DST
	indicator displayed) and Standard Time (DST indicator
	not displayed).
	• The DST indicator is 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.

•Daylight Saving Time (DST) advances the time setting by one hour from Standard Time. Remember that the not all countries or even local areas use Daylight Saving Time.

•The watch will perform a signal receive operation even if it is in 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 Home City time.

Time Recorder

The Time Recorder lets you store up to 30 records of the current time (month, day, hour, minutes, seconds, and DST on/off setting) with the touch of a button. One way you can use the Time Recorder is to record the start time and the end time of a particular event.

To record a Time Recorder time

1.Enter the Timekeeping Mode.

2.Hold down Bfor about one second to record the Home City time (month, day, hour, minutes, seconds, and DST on/off setting).

•The recorded time flashes for about two seconds, and then it is assigned a record number. After that, the Timekeeping Mode screen appears.

•Records are assigned numbers sequentially from #01 through #30.

•Storing a new time record when there are already 30 records stored in memory automatically deletes record #01, shifts the remaining records upwards by 1, and stores the new record as #30.

To recall Time Recorder times

1. Enter the Time Recorder Mode.

Recorded time	• If you recorded a new Time Recorder time since you
(Hour : Minutes Seconds)	last entered the Time Recorder Mode, the newest
	record appears first. If you have not recorded a new
	time, the record you were viewing when you last
	exited the Time Recorder Mode appears first.
	2. Use B(+) and D(–) to scroll through times stored in
	memory.
	To delete all Time Recorder times
	1. Enter the Time Recorder Mode.
Time record	2. Hold down Afor about two seconds to delete all Time
	Recorder times.
number
Recorded date	• The recorded date and recorded time are replaced by
(Month – Day)	dashes (x) when there are no Time Recorder times
	currently in memory.

Alarms

The Alarm Mode gives you a choice of four one-timeAlarm time (Hour : Minutes) alarms and one snooze alarm.

	Also use the Alarm Mode to turn the Hourly Time Signal
	(SIG) on and off.
	• There are five alarms numbered AL1 through AL4,
	and SNZ. You can configure SNZ as a snooze alarm
	only. Alarms AL1 through AL4 can be used as one-
	time alarms only.
Home city time	• Alarm settings (and Hourly Time Signal settings) are
	available in the Alarm Mode, which you enter by
Alarm number	pressing C.

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