Casio 5369 (MTG) Mode Reference Guide, Timekeeping (Dual Time Mode), YES, YES, YES, YES, YES, OFF, Note, Note, See:, FR/SA), Important, Alarm Mode, To do this:, Dual Time Mode

Operation Guide 5369 (MTG)

ξSignal 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)

ξAs of December 2012, 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 for the China time zones.

ξUsing this watch in a country covered by a time calibration signal that is different from the countries it supports may result in incorrect time indication due to local application of summer time, etc.

To get ready for a receive operation

1.Place the watch in a location where signal reception is good.

ξPosition the watch as shown in the nearby illustration, with 12 o’clock pointed towards a window. Make sure

12 o’clock	there are no metal objects nearby.
	ξ Signal reception normally is better at night.
or	ξ The receive operation takes from two to 10 minutes, but
	in some cases it can take as long as 20 minutes. Take
	care that you do not perform any button operation or
	move the watch during this time.

E-16

To perform manual receive

1.Hold down Cfor at least two seconds to enter the Dual Time Mode (page E-23).

2.Hold down Bfor at least two seconds.

ξThe x Second Hand will first indicate the last receive results as either Y (YES) or N (NO), and then move to RC (R) (Receive in progress) to indicate that signal reception has started.

		3. The watch’s time setting is adjusted automatically whenever a receive
Y (YES)
		operation is successful.
		Note
		ξ The current time indication may become out of sync by two or three minutes
		while a receive operation is in progress. Correct indication will resume after
		the receive operation is complete. If you need to produce a correct time
		reading immediately, press any button to stop the receive operation.
		ξ If reception fails for some reason, check the surrounding area and eliminate
		possible causes for failure and then try again. See “To get ready for a
		receive operation” (page E-16).

N (NO)

E-18

4.Rotate the crown to move the x Second Hand to the setting you want.

ξTo turn on auto receive, select Y (YES).

ξTo turn off auto receive, select N (NO).

5.Push the crown back in to return to the Dual Time Mode.

Radio-controlled Atomic Timekeeping Precautions

ξStrong electrostatic charge can result in the wrong time setting.

ξEven if a receive operation is successful, certain conditions can cause the time setting to be off by up to one second.

ξThe watch is designed to update the date and day of the week automatically for the period from January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from January 1, 2100.

ξIf you are in an area where signal reception is not possible, the watch keeps time with the precision noted in “Specifications” (page E-54).

ξThe receive operation is disabled under any of the following conditions.

−While power is at Level 2 or Level 3 (page E-11)

−While the watch is in the power recovery mode (page E-12)

−While the watch is in the sleep state (power saving, page E-13)

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

E-20

	C
Dual Time Mode		Stopwatch Mode
Indicates the day of the		Indicates the 1/20 (0.05)

ξSignal reception may be difficult or even impossible under the conditions described below.

Inside or among Inside a vehicle	Near household	Near a	Near high-	Among
buildings	appliances,	construction	tension power	or behind
	office	site, airport, or	lines	mountains
	equipment, or a	other sources of
	mobile phone	electrical noise

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

ξAuto Receive: Leave the watch over night in the location you selected in step 1.

ξManual Receive: Perform the operation under “To perform manual receive” on page E-18.

Important!

ξWith 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. When any receive operation is successful, none of the other receive operations for that day are performed.

ξCalibration signal reception is disabled in the following cases.

−While an elapsed time operation is in progress in the Stopwatch Mode

−While a timer operation is in progress

−While Auto Receive is turned off

−While the crown is pulled out

		E-17
To check the result of the latest receive operation
		1. Hold down Cfor at least two seconds to enter the Dual Time Mode (page
	Y (YES)
		E-23).
		2. Press B.
		ξ The x Second Hand will move to Y (YES) if the latest receive operation
		was successful, or N (NO) if it was not. After about ten seconds, regular
		timekeeping will resume.
		ξ You can return to the Dual Time Mode manually by pressing any button
		while the x Second Hand is pointing to Y (YES) or N (NO).
		Note
		ξ The x Second Hand will indicate N (NO) if you have adjusted the time or
N (NO)
		date setting manually since the latest receive operation.
To turn auto receive on and off
		1. Hold down Cfor at least two seconds to enter the Dual Time Mode (page
	Y (YES)
		E-23).
		2. Press B.
		3. During the 10 seconds that the x Second Hand is pointing to the latest
		receive operation result (see above), pull out the crown to the fi rst click.
		ξ This will cause the x Second Hand to point to either Y (YES) or N (NO),
		which indicates the current on/off setting.
		ξ Leaving the crown pulled out for more than two minutes without
		performing any operation will automatically cause crown operations to
		become disabled. If this happens, press the crown back in, pull it out,
N (NO)		and then start the operation over again.
		E-19

Mode Reference Guide

Your watch has four “modes”. The mode you should select depends on what you want to do. Use Cto cycle between modes.

To do this:	Enter this mode:	See:
ξ View the current time and date in your Home City
ξ Configure Home City and summer time (DST) settings	Any Mode	E-23
ξ Receive the time calibration signal automatically
ξ Manually adjust the time or date setting
ξ View the current time in one of 29 other cities around the globe
ξ Perform manual time calibration signal reception
ξ View reception results	Dual Time Mode	E-23
ξ Turn auto time calibration signal reception on or off
ξ Configure World Time City and summer time settings
ξ Swap the Home City and World Time City
ξ Use the stopwatch to measure elapsed time	Stopwatch Mode	E-35
ξ Use Auto Start
Use the countdown timer	Countdown Timer Mode	E-39
Set an alarm time	Alarm Mode	E-42

E-21

Timekeeping (Dual Time Mode)

To enter the Dual Time Mode, hold down Cat least two seconds.

	week (SU/MO/TU/WE/TH/	second count.
	FR/SA).
C			C
	Alarm Mode	Countdown Timer Mode
	Indicates ON or OFF.	Indicates TR.

C

ξYou can return to the Dual Time Mode from any other mode by holding down Cfor at least two

seconds.



Hand Functions

zHour Hand x Second Hand c Minute Hand

v Hour Hand (24-hour)

b Small Minute Hand: World Time minute hand

n Small Hour Hand: World Time hour hand

m Small Hour Hand (24-hour): World Time 24-hour hand

, Lower Dial Hand: Indicates the current day of the week.

. Day Indicator

ξPressing Acauses the x Second Hand to move to the current Home City for about one second.

ξThe . Day Indicator will change gradually between approximately 10 p.m. and 2 a.m. During this period the number indicating the day will not be centered in the indicator window.

E-22 E-23