Module No. 1874
GENERAL GUIDE
Stopwatch Mode � 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 seconds. Timekeeping Mode
A B
PA INTERVAL PA
1874-1
Countdown Alarm Mode
PA INTERVAL PA
PA INTERVAL
PA
PA INTERVAL
PA
PA INTERVAL
PA
24
A
A
24
RECALL
AUTO SPL
DATA
RECALL
AUTO SPL
DATA
Alarm Mode
PA INTERVAL PA
PA INTERVAL
PA
24
RECALL
AUTO SPL
DATA
C
D
v
A P
P
A
24
RECALL
AUTO SPL
DATA
TIMEKEEPING MODE
Day of week Day Month
� In the Timekeeping Mode, press B to illuminate the display.
A
PA INTERVAL PA
B D
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.
Seconds Hour Minutes 12/24-Hour Format Year
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 system� when diving � never dive alone. � Always use the �buddy � 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.)
24
v
A P
C
RECALL
AUTO SPL
Hour Minutes Seconds PM indicator
Day
Month
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.
To use the Dive Time Measurement Mode
Dive start time
A
24
PA INTERVAL
PA
B
A
C
RECALL
AUTO SPL
DATA
D
Dive time (hours, minutes, seconds)
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�.
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.
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
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.
A
INTERVAL
PA
B D
DATA
24
A
C
RECALL
AUTO SPL
DIVE TIME MEASUREMENT MODE
Current time
Dive time
A
PA INTERVAL PA
B D
24
A
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.
To clear the log data memory
A
INTERVAL
B D
DATA
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.
24
A
C
C
RECALL
AUTO SPL
RECALL
AUTO SPL
DATA
[ Cleared Display ]
Mode indicator
v
v
