Casio CASIO 1874-1 User's Manual

Casio Watches User's Manual - CASIO 1874-1.
Download
Page  of 2
4.8, 2074 votes
background image

1874-1

Module No. 1874

PA

PA

A
P

24

RECALL

AUTO SPL

DATA

INTERVAL

C

A

B

D

P

PA

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

PA

PA

INTERVAL

• 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.

Countdown Alarm Mode

Stopwatch Mode

PA

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

PA

PA

INTERVAL

PA

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

PA

PA

INTERVAL

Hold down
C for 2
seconds.

Dive Time Measurement Mode

Timekeeping Mode

Alarm Mode

GENERAL GUIDE

C

A

B

D

PA

PA

A
P

24

RECALL

AUTO SPL

INTERVAL

Day of week

Month

PM indicator

Hour

Seconds

Day

Minutes

Seconds

Hour

Minutes

Day

Month

Year

12/24-Hour
Format

TIMEKEEPING MODE

• In the Timekeeping Mode, press B to illuminate the

display.

To set the time and date
1. Press 

A while in the Timekeeping Mode. The seconds

digits flash on the display because they are 

selected.

2. Press 

C to change the selection in the following

sequence.

3. While the seconds digits are selected (flashing), press 

D to reset them to 00. If you

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

(12H) and 24-hour (24H) formats.

• 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.

C

A

B

D

PA

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

Current time

Mode indicator

DIVE TIME MEASUREMENT MODE

The Dive Time Measurement Mode lets you measure the
total time you spend underwater while diving or snorkeling,
and the amount of time spent on the surface (surface
interval). The watch also stores one set of diving time
data (total dive time and dive start time) into log memory
for later recall.

• In the Dive Time Measurement Mode, press B to

illuminate the display.

Precautions
For your own safety, never operate the buttons of the
watch while underwater or while on the water’s
surface. Perform button operations in a safe place
after leaving the water.

C

A

B

D

PA

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

Dive start time

Dive time (hours,
minutes, seconds)

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.)

To use the Dive Time Measurement Mode

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.

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

timing is performed internally, and it is not indicated on
the Dive Time Measurement Mode display. For details
on how to view surface interval data, see “To review log
data”.

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

Log data can be reviewed (recalled) in the Timekeeping
Mode.

1. Hold down 

C for at least two seconds to enter the

Timekeeping Mode from the Dive Time Measurement
Mode.

2. Hold down 

D to display the Log Data Display. The

Log Data Display remains visible as long as you hold
down 

D . When you release D , the normal

Timekeeping Mode display returns.

To clear the log data memory

Log data in memory is automatically replaced by the
newest measurement. Use the following operation if you
want to manually clear the log data memory.

1. While in the Timekeeping Mode, hold down 

D to display

the Log Data Display.

2. Press 

A to clear the log data memory. At this time, the

display clears so that no data is shown.

C

A

B

D

PA

A

24

RECALL

AUTO SPL

DATA

INTERVAL

Surface interval

Dive time

Dive start time

C

A

B

D

A

24

RECALL

AUTO SPL

DATA

INTERVAL

[ Cleared Display ]

0.611899s