Casio 2355, 2357, 2335 User Manual

Module No.

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ENP

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EAC

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GENERAL GUIDE

• Press C to change from mode to mode.

• Holding down C in any mode for about one second returns to the normal

timekeeping screen.

• Pressing C after performing some operation in the Recall Mode, Alarm

Mode, or Countdown Alarm Mode returns to the normal timekeeping screen.

• The configuration of your watch may differ somewhat from that shown in the illustration.

Timekeeping Mode

Press D.

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▼

Press D.

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Press C.

Stopwatch Mode

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Press C.

Countdown Alarm Mode

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Press C.

Press D.

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630

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00OO

• Pressing B in any mode besides the Countdown Alarm Mode or

Stopwatch Mode illuminates the display for about 1.5 second. The backlight is disabled while a setting screen is on the display.

• For Module 2307 and 2357, the backlight illuminates both the digital display and analog face. For Module 2335 and 2355, the backlight illuminates the digital display only.

• If you do not perform any operation for a few minutes while a setting screen (with flashing digits) is on the display, the watch automatically exits the setting screen.

• If you do not perform any operation for about 10 hours in the Barometer Mode, Altimeter Mode, or Thermometer Mode, the watch automatically reverts to the Timekeeping Mode screen.

Barometer Mode

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A8A0

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Alarm Mode

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Press C.

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Press C.

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Altimeter Mode

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Press C.

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Press C.

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2150

815

215

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Thermometer Mode

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Recall Mode

TIMEKEEPING MODE

• Pressing D changes the display in the sequence shown below.

Day of week

Press D.

Seconds

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Crown

Press D.

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Hour : Minutes

PM indicator

• The display type you select is used until you change it.

To set the time and date

1. While in the Timekeeping Mode, hold down A until the seconds digits

flash on the display.

2. Press C to move the selection (flashing) in the following sequence.

Seconds

3. While the seconds setting is selected (flashing), press D to reset it to 00. If you press D while the seconds setting is in the range of 30 to 59, the seconds are reset to 00 and 1 is added to the minutes. If the seconds setting is in the range of 00 to 29, the minutes count is unchanged.

• While the 12/24-hour format setting is selected, press D to toggle it

between 12 and 24.

Hour

Month – Day

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Press D.

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Month – Day

Barometric pressure graph

*See “BAROMETER MODE”.

Minutes

12/24

YearMonthDay

• When the 12-hour format is selected, the indicator P appears on the diaplay to indicate “p.m.” times. There is no indicator for “a.m.” times. Selecting the 24-hour format causes the 24 to appear on the display.

• While any other setting is selected (flashing), press D to increase the number or B to decrease it.

• Holding down either button changes the setting at high speed.

4. After you set the time and date, press A to change to the contrast setting

screen.

• The indicator CNT appears on the left of the screen, and the value indicating the current contrast setting flashes on the right.

• You can set the contrast to one of 11 levels in the range of –5 to +5.

5. Press D to make the display darker, or B to make it lighter.

6. After the contrast is the setting you want, press A to return to the normal

timekeeping screen.

• The day of the week is automatically set in accordance with the date.

• The date can be set within the range of January 1, 1995 to December 31,

2039.

• The watch’s built-in full automatic calendar automatically makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after the replacement of the watch’s battery.

To set the analog time

1. Pull the crown out to stop the second hand.

• If you plan to restart analog timekeeping on some time signal (from the radio or television), pull the crown out when the second hand is at the 12 o’clock position.

2. Set the hands by turning the crown.

3. Push the crown back in to restart timekeeping.

• Analog time is kept by a mechanical timepiece. Because of this, the second hand may not start to move exactly when you push the crown back in.

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ABOUT THE BACKLIGHT

This watch features an electroluminescent (EL) backlight that helps you easily read the face, even in total darkness. Its Auto Backlight function automatically lights the watch face whenever you turn your wrist towards your face.

• For Module 2307 and 2357, the backlight

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Note

• The backlight of the watch employs an electroluminescent (EL) light, which loses illuminating power after very long use.

• Frequent use of the backlight shortens the battery life.

• The illumination provided by the backlight may be hard to see when viewed

under direct sunlight.

• The watch will emit an audible sound whenever the display is illuminated. It does not indicate malfunction of the watch.

• The backlight automatically turns off whenever an alarm sounds.

To manually turn on the backlight

• Pressing B in any mode besides the Countdown Alarm Mode or Stopwatch Mode illuminates the display for about 1.5 second. The backlight is disabled while a setting screen is on the display.

To switch the auto backlight function on and off

While in the Timekeeping Mode, hold down D for one second to turn the Auto Backlight function on and off.

Auto backlight indicator

• The auto backlight indicator is shown on the display in all modes while the auto backlight function is on.

• In order to protect against running down the battery, the auto backlight function is automatically turned off approximately six hours after you turn it on. Repeat the above procedure to turn the auto backlight function back on if you want.

• Pressing B in any mode besides the Countdown Alarm Mode or Stopwatch Mode illuminates the display for about 1.5 second, regardless of the auto backlight function on/off setting.

About the Auto Backlight function

While the Auto Backlight function is turned on, the backlight automatically lights for about 1.5 second in any mode whenever you position your wrist as described below.

Important!

Avoid wearing the watch on the inside of your wrist. Doing so causes the Auto Backlight to operate when it is not needed, which shortens battery life.

Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes the backlight to illuminate.

• The backlight may not illuminate if the face of the watch is more than 15 degrees off parallel as shown below. Make sure that the back of your hand is parallel to the ground.

Parallel to ground

illuminates both the digital display and analog face. For Module 2335 and 2355, the backlight illuminates the digital display only.

Hold down D.

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ON OFF

Parallel to ground

More than 15 degrees too high

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More than 15 degrees too low

More than 40°

• Static electricity or magnetic force can interfere with proper operation of the auto backlight function. If the auto backlight does not illuminate, try moving the watch back to the starting position (parallel with the ground) and then tilt it back towards you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

• Under certain conditions the backlight may not light until about one second or less after turn the face of the watch towards you. This does not necessarily indicate malfunction of the backlight.

Warning!

• Never try to read your watch when mountain climbing or hiking in areas that are dark or in areas with poor footing. Doing so is dangerous and can result in serious personal injury.

• Never try to read your watch when running where there is the danger of accidents, especially in locations where there might be vehicular or pedestrian traffic. Doing so is dangerous and can result in serious personal injury.

• Never try to read your watch when riding on a bicycle or when operating a motorcycle or any other motor vehicle. Doing so is dangerous and can result in a traffic accident and serious personal injury.

• When you are wearing the watch, make sure that its auto backlight function is turned off before riding on a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto backlight can create a distraction, which can result in a traffic accident and serious personal injury.

BAROMETER MODE

This watch uses a pressure sensor to measure barometric pressure. It can be adjusted to correct for measurement error.

Important !

The barometer that is built into this watch measures changes in barometric pressure, which you can then apply to your own weather predictions. It is not intended for use as a precision instrument in official weather prediction or reporting applications.

Example barometer applications

• Before going mountain climbing, you can take readings to predict upcoming weather.

• You can predict the weather for golf or other outdoor activities.

About barometric pressure measurements

The watch takes barometric pressure measurements every five seconds for the first two minutes after you enter the Barometer Mode. The Barometer Mode indicator 1 flashes on the display during these two minutes. After the first two minutes, the Barometer Mode indicator 1 stops flashing, and the watch automatically takes measurements every two hours (starting from midnight). The watch continues to take barometric pressure readings every two hours, even if you change to another mode. Measurement data can be viewed on the Timekeeping Mode screen on the barometric pressure graph.

Last measurement

Barometer Mode indicator 1

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Remaining memory

Barometer Mode indicator 2

*1 The barometric pressure graph shows the barometric pressure readings

for the past 18 hours. The flashing point on the right of the display is the point of the last measurement.

*2 The displays show “– – – – hPa” (or inHg) if a measured value falls outside

the range of 460 hPa/mb to 1100 hPa/mb (13.55 inHg to 32.45 inHg). The normal display will return as soon as the pressure returns with the allowable range.

(updated every two hours)

5 seconds later

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Barometric pressure graph

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Unit of measurement

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Press A.

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