Casio 1879 Owner's Manual

Module No.1879

GENERAL GUIDE

• If the contents of the display seem to be continually changing, see “AUTO DISPLAY FUNCTION” for information on how to stop it.

• Press

C to change from mode to mode.

• In any mode, press

Hour angle of moon

Day of week

L to illuminate the display for about 1 second.

Timekeeping Mode Fishing Time Mode Sunrise & Sunset Mode Stopwatch ModeAlarm Mode

Hour

Moon phase

Minutes

Pressed to view Sunrise & Sunset Mode.

Month – Day

Changes between 12-/24-hour formats.

Seconds

CPress

1879-1

CPress

Press

CPress

Press

About the backlight

In any mode, press

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

• 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. This is caused by a transistor that vibrates when the EL panel lights up. It does not indicate malfunction of the watch.

• The backlight automatically turns off whenever an alarm sounds.

L to illuminate the display for about 1 second.

SETTING TIME AND DATE

1)Press

B in the Timekeeping Mode to set correct time.

BB AA

2)Press

A with a time tone to correct seconds.

AA CC

3)Press

C to shift flashing digit(s).

Digit(s) to be changed will flash.

Seconds

Day of week Day Month

4)Each press of Hold down for rapid advance.

5)Press

B twice to complete setting.

Note: If you use any other mode within 30 seconds while the calculation is carried out, your new entries may fail to be inputted. (This operation, however, should never damage your watch.)

Hour Minutes

A increases digit by one.

Year

SETTING LOCATION DATA

1)Press

B twice in the Timekeeping Mode to

Press

Press Press

Press

The display automatically returns to the Timekeeping Mode, if left unused for a few minutes.

Note: If you use any other mode within 30 seconds while the calculation is carried out, your new entries may fail to be inputted.

set new location data. Set time difference from GMT, longitude and latitude.

2)Press

A to advance hour.*

AA CC

3)Press

C to set longitude.

Press

A or

D to change the longitude digits.*

4)Press

C to set latitude.

CC AA

Press

A or

D to change the latitude digits.*

*Hold down for a few seconds for rapid ad-

vance.

5)Press

B to complete.

MOON GRAPH DISPLAY

Moon Age

Moon

New Moon

Phase (0.0) (7.4) (14.8) (22.1) (29.5)

0.0 1.9 5.6 9.3 13.0 16.7 20.3 24.0 27.7

Moon

~~~~ ~~~~ ~

age

1.8 5.5 9.2 12.9 16.6 20.2 23.9 27.6 29.5

Display

First Quarter

Full Moon

Last Quarter

New Moon

Moon angle

The hour angle of moon tells in what direction the moon is seen.

Example

12 1218 0 6

17.5 ~ 18.5

16.5 ~ 17.5

15.5 ~ 16.5

14.5 ~ 15.5

13.5 ~ 14.5

12.5 ~ 13.5

11.5 ~ 12.5

12 1218 0 6

In the example at left, the moon has passed the meridian. If you look above the moon near the equator, the moon is seen at west. In Northern hemisphere the moon is seen at west from the south. In Southern hemisphere, the moon is seen at west from the north.

19.5 ~ 20.5

18.5 ~ 19.5

21.5 ~ 22.5

20.5 ~ 21.5

22.5 ~ 23.5

23.5 ~ 0.5

0.5 ~ 1.5

1.5 ~ 2.5

2.5 ~ 3.5

3.5 ~ 4.5

4.5 ~ 5.5

5.5 ~ 6.5

6.5 ~ 7.5

7.5 ~ 8.5

8.5 ~ 9.5

9.5 ~ 10.5

10.5 ~ 11.5

11.5 ~ 12.5

USING FISHING TIME MODE

Press

C to get to the Fishing Time Mode from Timekeeping Mode. Wait a few sec-

onds and the display automatically starts to show the following:

1)Time of each moon hour angle, alternatively between 0h, 6h, 12h and 18h, 2) Moon age, 3) Moon phase.

3)Moon phase

Fishing time indicator

2)Moon age

It is well known from the long experience of fishermen that movement of the moon and tides affect fish. In the United States there exist many fishing time theories based on the movement of the moon.

Data displayed is astronomical information on the moon. Take the challenge to fish using this data.

Relationship between hour angles of moon, moon age and fish marks

Moon phases

New moon Full moon

First quarter Last quarter

Others

? ? ? ?

Hour angles

of moon

1)Time of each moon hour angle (18h)

12 1218 0 6

1)Time of each moon hour angle (0h)

If the fishing times on other days are required, press

A (+ one day) or

Mode to set the required date. Hold down for rapid advance. When the required date is correctly set, wait approx. 20 seconds. The display will automatically show the following data for the required

– one day

date: 1) time of each moon hour angle, alternatively between 0h, 6h, 12h and 18h, 2) moon age, 3) moon phase.

+ one day

*As the value of moon hour angle is based on the

movement of the moon and not the sun, the fourth fishing time data (for 18h) may be missed. In such a case, the display will appear as below:

0h or 12h 6h or 18h

12 1218 0 6

1)Time of each moon hour angle (6h)

D (– one day) in the Fishing Time

Note: Fishing time is indicated by 5 minutes unit.

1)Time of each moon hour angle (12h)

Hour angles of moon is other than 0h, 6h, 12h and 18h.

No indication

Moon Age

Time elapsed in days from the new moon is called the moon age.

1879-2

USING SUNRISE & SUNSET MODE

A few seconds after pressing keeping Mode, the display will move to the Sunrise

Moon phase

Moon age

Sunset time

• Minimum display unit is: approx. ±5 minutes where is at less than 50° in latitude and approx. ±10 minutes at 50° or more in latitude.

• Sunrise & sunset time is indicated by 5 minutes unit.

& Sunset Mode. The display shows sunrise time, moon age, and moon phase for the date indicated in the time mode. When sunrise, sunset, and moon age data for other dates is required, press in this mode to obtain the required date. Hold down for rapid advance. When required date has been

Sunrise

set, the display will show sunrise, sunset, and moon

time

age data for this date after approx. 20 seconds.

Precaution for Sunrise & Sunset Mode

• The sunrise or sunset time is that of the surface at 0 meter sea level. (So, it is not able that the sunrise or sunset time displayed may include an error depending on where you are.)

C twice in the Time-

A or

USING DAILY ALARM

The alarm beeper will sound for 20 seconds everyday the preset time until cleared when daily alarm is set. Press any button to stop beeper. A signal will sound every hour on the hour if time signal is set.

Sound demonstration

Press and hold

1)Press

Hour

On or off setting of alarm and time signal

In the Alarm Mode, each push of

2)Each press of

Minutes

3)Pressing advance.

4)Press

Display automatically returns to initial Alarm Mode display if left unused for a few minutes.

A in Alarm Mode to sound beeper.

B in the Alarm Mode to set new alarm time.

C shifts the flashing position.

A increase digit by one. Hold down for rapid

B to complete.

D button will change alarm ON/OFF as follows.

AUTO DISPLAY FUNCTION

The Auto Display function of this watch continually changes the contents of the display. Note that you cannot use any of the watch’s other functions while the Auto Display function is operating.

To turn the Auto Display on

Hold down

C for about two or three seconds in any mode until the watch beeps.

To turn the Auto Display off

Hold down

C for about two or three seconds until the watch beeps. At this time the

watch is in the Timekeeping Mode.

Note

The Auto Display function cannot be performed while you are making settings (i.e. while digits or other setting are flashing on the display).

appears when alarm is ON. appears when time signal is ON.

USING STOPWATCH

Seconds

SPLIT/RESET

START/STOP

1/100 second

Record the time of the second runner.

Mode indicator

Hour

Minutes

A signal confirms each button operation.

Working range

Total elapsed time display is limited to 23 hours 59 minutes 59.99 seconds. Thereafter it will be automatically reset and started again.

Net time measurement

(Time loss)

Start

Split time measurement

Start

1st-2nd place times

Start

Tips…

Stop Re-start Stop Reset

Split Split release Stop Reset

Split Stop Split release Reset

The first runner finishes.

The second runner finishes. Record the time of the first runner.

• Various moon time information for a specification can

be calculated by inputting of longitude, latitude and time difference from GMT. Therefore correct entries are necessary. For world time zones, see the time zone chart booklet attached.

• When summer time adjustment is made, don’t forget to

adjust time difference from GMT.

• When location is changed, new location data should be

inputted to get correct moon time information.

• When the watch shows wrong moon time information

compared with actual observed values, or estimated values by public authorities, check entries in the following order: year setting, time difference from GMT, LONGITUDE, LATITUDE, EAST OR WEST, NORTH OR SOUTH.

+ 1 hidden pages