Casio 1874 General Manual

Module No. 1874
• Press C to change from mode to mode. Each mode is explained in detail on the
following pages.
• After you perform an operation in any mode, pressing C returns to the Timekeeping
Mode.
• While in any mode hold down C for 2 seconds, to enter the Dive Time Measurement
Mode.
Dive Time Measurement Mode
Hold down
C for 2
PA INTERVAL PA
seconds.
24
A
P
RECALL AUTO SPL DATA
TIMEKEEPING MODE
• In the Timekeeping Mode, press B to illuminate the
Day of week Day
display.
Month
A
To set the time and date
B
PA INTERVAL PA
1. Press A while in the Timekeeping Mode. The seconds
digits flash on the display because they are selected .
24
A
2. Press C to change the selection in the following
P
D
C
sequence.
RECALL AUTO SPL
Hour
Seconds
Minutes
Seconds
PM indicator
3. While the seconds digits are selected (flashing), press D to reset them to
press D while the seconds count is in the range of 30 to 59, the seconds are reset to
00 and 1 is added to the minutes. If the seconds count is in the range of 00 to 29, the
minutes count is unchanged.
4. While any digits (besides seconds) are selected (flashing), press D to increase the
selection. Holding down D changes the current selection at high speed.
The 12/24-hour setting is selected (flashing), press D to switch between the 12-hour
( ) and 24-hour ( ) formats.
1 2H 24H
• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 pm and the A (AM) indicator appears to the left of
the hour digits for times in the range of midnight to 11:59 am.
• The 24-hour format is indicated by 24 on the display. Times are shown in the range of
00:00 to 23:59.
5. After you set the time and date, press A to return to the Timekeeping Mode.
• 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.
• 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 Timekeeping Mode automatically.
About the backlight
The backlight uses an EL (electro-luminescent) panel that causes the entire display to
glow for easy reading in the dark. In the Timekeeping Mode or Dive Time Measurement
Mode, press B to illuminate the display for about two seconds.
• The electro-luminescent panel loses illuminating power after very long use.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The backlight automatically turns off whenever an alarm sounds.
DIVE TIME MEASUREMENT MODE
The Dive Time Measurement Mode lets you measure the
Current time
total time you spend underwater while diving or snorkeling,
and the amount of time spent on the surface (surface
A
interval). The watch also stores one set of diving time
B
PA INTERVAL PA
data (total dive time and dive start time) into log memory
for later recall.
24 • In the Dive Time Measurement Mode, press B to
A
D
C
illuminate the display.
RECALL AUTO SPL DATA
Precautions
For your own safety, never operate the buttons of the
Mode indicator
watch while underwater or while on the water's
surface. Perform button operations in a safe place
after leaving the water.
Timekeeping Mode
A
B
P
D
C
12/24-Hour
Minutes
Hour
Format
Day
Month Year
GENERAL GUIDE
Stopwatch Mode
PA
INTERVAL
Before Diving/Snorkeling
• Be sure to check if the battery power is low (check for low light intensity or a dim
display). If it is, do not use the watch for diving/snorkeling.
• Make sure that the watch is set to the correct time of day.
• Check the glass, case and band for cracks or chips.
• Make sure that the band is fastened securely around your wrist.
While Diving/Snorkeling
• Always use the "buddy system" when diving — never dive alone.
• Check to make sure that timer operation is being performed properly.
• Take care when diving/snorkeling near rocks or coral to avoid scratching the
watch.
After Diving/Snorkeling
• To avoid corrosion, rinse your watch thoroughly with fresh water to remove salt
water, dirt, etc. (When possible, soak the watch in fresh water overnight to make
sure that all salt is removed.)
. If you
00
To use the Dive Time Measurement Mode
Dive start time
A
PA
INTERVAL
24
A
C
RECALL AUTO SPL
Dive time (hours,
minutes, seconds)
Important!
Do not recall log data (to view the surface interval) while this procedure is in progress. If
you do, the dive time to that point will be stored into memory and the data will be cleared
when you re-start the dive time measurement operation.
4. To resume timing from the dive time shown on the display, press D.
• You can repeat steps 3 and 4 as many times as you like.
5. To clear the Dive Time Measurement Mode, stop the measurement operation (step 3,
above) and then press A.
To review log data
Surface interval
Dive start time
A
INTERVAL
24
A
C
RECALL AUTO SPL
Dive time
To clear the log data memory
A
INTERVAL
24
A
C
RECALL AUTO SPL
[ Cleared Display ]
PA
PA INTERVAL PA
24
A
RECALL AUTO SPL DATA
Alarm Mode
PA INTERVAL PA
PA INTERVAL PA
24
A
RECALL AUTO SPL DATA
1. Before diving/snorkeling, switch to the Dive Time
Measurement Mode by holding down C for at least
two seconds.
2. To start the dive time measurement operation, press D.
B
PA
3. To stop the measurement, hold down D for at least
one second (until the watch emits a long beep).
• At this time, timing of the surface interval starts. This
D
timing is performed internally, and it is not indicated on
DATA
the Dive Time Measurement Mode display. For details
on how to view surface interval data, see "To review log
data".
Log data can be reviewed (recalled) in the Timekeeping
Mode.
1. Hold down C for at least two seconds to enter the
B Timekeeping Mode from the Dive Time Measurement
PA
Mode.
2. Hold down D to display the Log Data Display. The
Log Data Display remains visible as long as you hold
D
down D . When you release D , the normal
DATA
Timekeeping Mode display returns.
Log data in memory is automatically replaced by the
newest measurement. Use the following operation if you
B
want to manually clear the log data memory.
1. While in the Timekeeping Mode, hold down D to display
D
the Log Data Display.
DATA
2. Press A to clear the log data memory. At this time, the
display clears so that no data is shown.
1874-1
Countdown Alarm Mode
PA PA
INTERVAL
PA INTERVAL PA
24
A
RECALL AUTO SPL DATA