Casio 4798 Alarm, Dual Time, Adjusting the Home Positions, Average Speed Indication, Using the Tachymeter Bezel to Calculate Average Speed, Alarm Operation

Operation Guide 4798

Average Speed Indication

To toggle a time zone between Standard Time and Daylight Saving Time

Stopwatch minute hand

Average Speed Indication

The stopwatch minute hand will move the average speed value after you stop a time measurement or display a lap time. The letters SP flash on the digital display while the average speed is indicated.

Stopping an Elapsed Time or Cumulative Elapsed Time Measurement

The stopwatch minute hand moves to the average speed value after you press B to stop measurement. After two seconds, the hand moves to the minutes of elapsed time.

Lap Time Measurement

The stopwatch minute hand moves to the average speed value after you press A to display a lap time or Bto stop measurement. After two seconds, the hand moves to the minutes of lap time.

• If the value you input for the distance was in kilometers,

the indicated speed values will show kilometers per

hour. If the value you input was in miles, it will show

miles per hour. Note that the watch does not have a

setting for specifying kilometers or miles.

1.In the Dual Time Mode, use Bto display the time zone whose Standard Time/Daylight Saving Time setting you

want to change.

2. Hold down A to toggle between Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).

• Turning on DST causes the GMT differential value to be increased by one.

DST indicator

•The DST indicator appears on the display whenever you display a time zone for which Daylight Saving Time is turned on.

•The DST/Standard Time setting you configure affects only the currently displayed time zone. Other time zones are not affected.

•The (GMT: Greenwich Mean Time) time zone cannot be switched between Standard Time and Daylight Saving Time.

Alarm

I	II
I
I	I
I	I
I
II	I

Fastest Lap Time Indicator

OVER Indication

• The average speed is indicated as a value from 0 to

400, in increments of 10.

• If the currently displayed speed value for a lap is the

fastest for any laps during the current measurement

operation, the letter F (fastest lap time indicator) will

flash on the digital display.

• Either of the following will cause the stopwatch minute

hand to indicate OVER, which indicates that speed

cannot be calculated.

When the speed calculation produces a value

greater than 400

When a displayed elapsed time or cumulative

elapsed time is 60 minutes or greater

When a displayed lap time is 60 minutes or greater

(Average speed calculation will resume when timing

of the next lap is performed.)

Stopwatch 1/20 second hand

Alarm time minute hand

Alarm time

24-hour hand

Alarm time	On/Off status
hour hand

When the alarm is turned on, the alarm sounds when the alarm time is reached.

•When you enter the Alarm Mode, the stopwatch 1/20 second hand will move to ALM.

•All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

To set an alarm time

1.In the Alarm Mode, hold down Afor two seconds to display the setting mode.

2.Use B to change the alarm time.

•Press B to move the hands clockwise in one-minute steps.

3.After setting the alarm time, press Ato exit the setting

mode.

•Setting the alarm time causes the alarm to turn on automatically.

•It takes about two seconds before the average speed to be calculated and the speed is indicated for about two seconds, so the average speed operation takes a total of

about four seconds. The watch will continue measuring the next lap internally during this time. Note, however, that pressing Bwill not display the time of the next lap during this four-second period.

To input a course or section distance

1.In the Stopwatch Mode, hold down A for about two seconds until the current distance value setting flashes

				in the digital display. This is the setting screen.
				2. Press Bto increase the distance setting in steps of
	I I I			0.1.
I				• Simply input a distance value. It makes no difference
		I
II		I		whether the value represents kilometers or miles.
I		I	I
I I I				• You can input a distance in the range of 0.1 to 19.9.
				3. Press A to exit the setting screen.

•To disable speed display, set the distance value to 0.0.

Distance value

Using the Tachymeter Bezel to Calculate Average Speed

	Tachymeter bezel				If your watch has a tachymeter bezel, you can perform the
					steps below to calculate average speed after using the
					Stopwatch Mode to measure the amount of time that it
	0		60 TAC	E
				HY
7		0		ME	takes to travel one kilometer (or one mile).
				3
				R
		7		T
				6	• Never try to perform stopwatch operations while you
				0
80					are driving an automobile, riding a bicycle, or
					operating any type of vehicle. Doing so is very
				0
					dangerous and can result in accident.
				0
				2
		0			1 In the Stopwatch Mode, start an elapsed time
		1	0	150	operation at any point you like.
			120

2Stop the elapsed time operation after you travel one

kilometer or one mile.

3Your average speed will be the value that the second hand is pointing to on the tachymeter bezel.

•The illustration shows an example where it took 50 seconds to travel one kilometer by car. The second hand is pointing at 70, which indicates that the average speed is 70 kilometers per hour.

•The tachymeter can be used only when you are traveling by car or some other means that can cover one kilometer or one mile within 60 seconds.

Dual Time

Alarm Operation

The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in.

•Alarm operations are performed in accordance with the Timekeeping Mode time.

•Pressing any button stops the alarm tone operation.

To toggle an alarm on and off

In the Alarm Mode, press Bto toggle the alarm ON and OFF.

•The watch will beep when you turn on the alarm.

Adjusting the Home Positions

If the time and date settings are wrong even after the time calibration signal is received normally, use the following procedure to adjust their home positions.

To adjust the home positions

Stopwatch 1/20		Second						1. In the Timekeeping Mode, press C four times to enter
								the Hand Setting Mode.
second hand		hand
								• The stopwatch 1/20 second hand will move to -00-.
								2. Hold down A until 0 0 starts to flash, which indicates
								the analog setting screen.
								• The second hand is at the proper home position if it
								moves to 12 o’clock. If it doesn’t, press Bto move it
		I		I	II			to 12 o’clock.
	II					I		3. After confirming that the second hand is at the proper
	I		I	I		I	I
								home position, press C. This will switch to hour hand
								and minute hand home position adjustment (Hm
Minute hand	Hour hand							flashes).
								• The hour hand and minute hand are at their proper
								home positions if they both move to 12 o’clock, and if
								the 24-hour hand is pointing at hour 24. If the hands
								are not positioned correctly, use B to move them to
								their proper home positions.
	I		I		II			4. After confirming that the hour hand and minute hand
								are both at their proper home positions, press C.
	I					I
	I
	I		I	I		I		This will switch to stopwatch 1/20 second hand home
						24-hour
								position adjustment (20 flashes).
						hand
								• The stopwatch 1/20 second hand is at the proper
Stopwatch 1/20 second hand
								home position if it moves to 0. If it doesn’t, use B to
								move it to 0.
								5. After confirming that the stopwatch 1/20 second hand is
								at the proper home positions, press C. This will switch

Hour hand

Stopwatch 1/20 Minute

second hand hand

Second hand

GMT differential value(–4.0)

Minus sign

The Dual Time Mode lets you view the current time in 29 time zones around the world.

•When you enter the Dual Time Mode, the stopwatch 1/20 second hand will move to DUAL.

•Time zones are indicated on the digital display by their GMT differential values.

•For full information on time zones, see the “Time Zone Table”.

•The watch will perform a signal receive operation even if it is in the Dual Time Mode when a calibration time is reached. If this happens, the Dual Time Mode time settings will be adjusted in accordance with the current time in the Timekeeping Mode’s Home Time Zone.

•All of the operations in this section are performed in the Dual Time Mode, which you enter by pressing C.

				to stopwatch minute hand home position adjustment
I	I	II		(60 flashes).
II		I
			I	• The stopwatch minute hand is at the proper home
II II
				position if it moves to 60. If it doesn’t, use B to move
				it to 60.
Stopwatch minute hand				6. Press Ato exit the setting screen.
				• After you complete the home position adjustment
				procedure, place the watch in a location that allows
				good time calibration signal reception, and then perform
				a manual receive operation. See “To perform manual
				receive” for more information.
I	I	II
II		I
I	I I	I	I

To view the time in another time zone

While in the Dual Time Mode, press Bto scroll eastward through time zones.

•When you release B, the hands will move to the current time in that time zone after about one second.

•If the current time shown for a time zone is wrong, check the Timekeeping Mode time setting and your Home Time Zone setting, and make the necessary changes.

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