User manual

ManualsBrandsCasio ManualsWatch1645

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About Temperature Measurement

• A temperature graph which is automatically updated every five minutes, is shown

on the display in all modes (except when making settings). Measured temperature

values can be viewed in the Thermometer Mode only.

• Pressing while in the Thermometer Mode performs temperature measurement

and causes the measured value to appear on the display.

* The display shows “– – . – C (or F)” if a mea-

sured value falls outside the range of –20

C to

C (–4 F to 140 F). The normal display will

return as soon as the temperature returns within

the allowable range.

Switching between Celsius and Fahrenheit

1.Hold down while in the Thermometer Mode

and the current temperature digits flash.

2. Press to select either Celsius “C” or Fahren-

heit “F”.

3. After you select the Celsius or Fahrenheit, press

to return to the Temperature Display.

• If you do not operate any button for a few min-

utes while a selection is flashing, the flashing

stops and the watch goes back to the Thermom-

eter Mode automatically.

Calibrating the Temperature Measurement

The temperature sensor of this watch is calibrated at the factory before shipment and

further adjustment is normally not required. If noticeable error is found in the temperature

readings produced by the watch, you can adjust it to correct the error.

Important

Incorrectly calibrating the temperature measurement of this watch can result in incor-

rect readings. Carefully read the following before doing anything.

• Compare the readings produced by the watch with those of another reliable, accu-

rate thermometer.

• If calibration is required, remove the watch from your wrist and wait for 20 or 30

minutes to give the temperature of the watch time to stabilize.

• Perform the temperature calibration as quickly as possible to avoid the temperature

of the watch being affected by your body temperature.

• You can also perform temperature calibration underwater, if the water temperature

is stable.

To calibrate the temperature

1.Hold down while in the Thermometer Mode

and the current temperature digits flash.

2. Each press of increase the displayed temper-

ature by 0.1

C, and pressing the decrease it

by 0.1

• If you have selected Fahrenheit as your unit of

measurement, the above operations change the

reading by 0.2

• You can calibrate the temperature within a range

of –9.9 C to +9.9 C (–18.0 F to +18.0 F).

• Press and at the same time to rest the tem-

perature calibration to the factory setting.

3. After calibrating the temperature, press to re-

turn to the Temperature Display.

• If you do not operate any button for a few min-

utes while a selection is flashing, the flashing

stops and the watch goes back to the Thermom-

eter Mode automatically.

COUNTDOWN ALARM MODE

The countdown timer can be set within a range of

1 minute to 60 minutes. When the countdown

reaches zero, an alarm sounds for 10 seconds or

until you press any button.

To set the countdown time

1.Hold down while in the Countdown Alarm

Mode. The minutes digits flash on the display

because they are selected.

2.Press to increase the minutes digits or to

decrease them. Holding down either button

changes the setting at high speed.

3.After you set the countdown alarm time, press

to return to the Countdown Alarm Mode.

• If you do not operate any button for a few min-

utes while a selection is flashing, the flashing

stops and the watch goes back to the Countdown

Alarm Mode automatically.

To use the countdown timer

1. Press while in the Countdown Alarm Mode to start the countdown timer.

2. Press again to stop the countdown timer.

• You can resume countdown timer operation by pressing .

3. Stop the timer and then press to reset the countdown time to its starting value.

Hourly time signal on indicator

Current time

Both ON Both OFF

Daily Alarm

only

Hourly Time

Signal only

ALARM MODE

When the Daily Alarm is turned on, the alarm

sounds for 20 seconds at the preset time each day.

Press any button to stop the alarm after it starts to

sound. When the Hourly Time Signal is turned on,

the watch beeps every hour on the hour.

To set the alarm time

1. Hold down while in the Alarm Mode. The hour

digits flash on the display because they are se-

lected. At this time the Daily Alarm is turned on

automatically.

2. Press to change the selection in the following

sequence.

3.Press to increase the selected digits or to decrease them. Holding down

either button changes the selection at high speed.

• The format (12-hour and 24-hour) of the alarm time matches the format you select

for normal timekeeping.

• When setting the alarm time using the 12-hour format, take care to set the time

correctly as morning (A) or afternoon (P).

4. After you set the alarm time, press to return to the Alarm Mode.

• If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the Alarm Mode automatically.

To switch the daily alarm and hourly time signal on and off

Press while in the Alarm Mode to change the status of the daily alarm and hourly

time signal in the following sequence.

Alarm on indicator

Hourly time signal on indicator

To test the alarm

Hold down while in the Alarm Mode to sound the alarm.

Mode indicator

Alarm on

indicator

Hour

Minutes

Mode

indicator

Current

temperature

Temperature graph

Flashes

Mode

indicator

Current

time

Seconds

Minutes

Hour Minutes