Casio 1879 General Manual

Module No.1879
If the contents of the display seem to be continually changing, see "AUTO DISPLAY FUNCTION" for information on how to stop it.
Press C C C C C to change from mode to mode.
In any mode, press L L L L L to illuminate the display for about 1 second.
Timekeeping Mode
Hour angle of moon Moon phase
PM
Seconds
Hour
Day of week
Minutes
About the backlight
In any mode, press L L L L L to illuminate the display for about 1 second.
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 indi-
cate malfunction of the watch.
The backlight automatically turns off whenever an alarm sounds.
SETTING TIME AND DATE
1)Press B B B B B in the Timekeeping Mode to set correct time.
2)Press A A A A A with a time tone to correct seconds.
3)Press C C C C C to shift flashing digit(s).
Digit(s) to be changed will flash.
4)Each press of A A A A A increases digit by one.
Hold down for rapid advance.
5)Press B B B B 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.)
SETTING LOCATION DATA
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.
MOON GRAPH DISPLAY
Moon Age
Moon New Moon First Quarter
Phase (0.0) (7.4)
0.0 1.9 5.6
Moon
~ ~ ~
age
1.8 5.5 9.2
Display
Moon Age
Time elapsed in days from the new moon is called the moon age.
Fishing Time Mode
Press C C C C C
Pressed to view
Sunrise & Sunset
Mode.
Month – Day
Changes between
12-/24-hour formats.
?
Seconds Hour Minutes
Day of week Day Month
1)Press B B B B B twice in the Timekeeping Mode to
set new location data.
Set time difference from GMT, longitude and
latitude.
2)Press A A A A A to advance hour.*
3)Press C C C C C to set longitude.
Press A A A A A or D D D D D to change the longitude digits.*
4)Press C C C C C to set latitude.
Press A A A A A or D D D D D to change the latitude digits.*
*Hold down for a few seconds for rapid ad-
vance.
5)Press B B B B B to complete.
Full Moon Last Quarter
(14.8) (22.1)
9.3 13.0 16.7 20.3 24.0
~ ~ ~ ~ ~
12.9 16.6 20.2 23.9 27.6
GENERAL GUIDE
Sunrise & Sunset Mode
Press C C C C C
? ?
Moon angle
The hour angle of moon tells in
what direction the moon is seen.
Example
12 18 0
Press C C C C C to get to the Fishing Time Mode from Timekeeping Mode. Wait a few sec-
Year
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.
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
Hour angles
of moon
New Moon
(29.5)
Moon phases
27.7
~
New moon
29.5
Full moon
First quarter
Last quarter
Others
Alarm Mode
Press C C C C C Press C C C C C
22.5 ~ 23.5
21.5 ~ 22.5
20.5 ~ 21.5
19.5 ~ 20.5
18.5 ~ 19.5
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 18
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
6 12
seen at west from the north.
USING FISHING TIME MODE
3)Moon phase
Fishing time indicator
? ?
1)Time of
1)Time of 1) Time of
each moon
each moon each moon
hour angle
hour angle hour angle
(18h)
(0h) (6h)
If the fishing times on other days are required, press
A A A A A (+ one day) or D D D D D (– one day) in the Fishing Time
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 auto-
matically show the following data for the required
– one day
date: 1) time of each moon hour angle, alternative-
ly 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:
?
Note: Fishing time is indicated
by 5 minutes unit.
0h or 12h 6h or 18h
12 18 0 6 12
12 18
1879-1
Stopwatch Mode
Press C C C C C
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
0 6 12
? ?
1)Time of
each moon
hour angle
(12h)
Hour angles of
moon is other
than 0h, 6h, 12h
and 18h.
0 6 12
No indication