Casio 2535 Owner's Manual
USER’S GUIDE 2535
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
• Be sure to read “Battery” of this manual for important
information you need to know when exposing the watch to bright light.
If the display of the watch is blank...
General Guide
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display.
If the SLEEP indicator is on the display, it means that the
display is blank because the watch’s Power Saving
function has turned off the display to conserve power.
Power Saving automatically turns off the display and puts
the watch into a sleep state whenever your watch is left
for a certain period where it is dark.
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to
a well-lit area
the watch towards your face for reading.
It can take up to five seconds for the display to turn on.
*
• See “Power Saving Function” for more information.
, if you press any button, or if you angle
*
Timekeeping Mode
Press C.
About This Manual
Stopwatch Mode
▲
Dual Time Mode
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
(Light)
Recall Mode
▲
Alam Mode
Countdown Timer Mode
▲
▲
Timekeeping
Hour : Minutes Seconds
Year
Day of week
Month – Day
PM indicator
3. When the setting you want to change is flashing, use D and A to change it as
described below.
Setting
Seconds
Hour, Minutes
12/24-Hour
Format
Year, Month, Day
Power Saving
4. Press B to exit the setting screen.
• See “Power Saving Function” for details about configuring Power Saving settings.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all modes.
• The day of the week is automatically displayed in accordance with the date (year,
month, and day) settings.
Use the Timekeeping Mode to set and view the current
time and date.
To set the time and date
1. In the Timekeeping Mode, hold down B until the
seconds start to flash, which indicates the setting
screen.
2. Press C to move the flashing in the sequence shown
below to select other settings.
12/24-Hour
Forma t
Screen
HourSeconds
Minutes
Power Saving
Press D to reset to 00.
Use D (+) and A (–) to change the setting.
Press D to toggle between 12-hour (12H) and
24-hour (24H) timekeeping.
Use D (+) and A (–) to change the setting.
Press D to toggle Power Saving on (ON) and
off (OFF).
Day Month
Button Operation
Ye a r
Stopwatch
Remaining memory
Minutes
Hours
Timekeeping
Mode time
1/100 second
Seconds
The 1/100-second stopwatch can measure elapsed time
and lap/split times. The stopwatch uses the basic data you
input and a pacer signal to calculate the distance you
cover while jogging or running. Stopwatch times and your
distance are also stored in memory.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a lap/split time is
frozen on the display clears the lap/split time and returns
to elapsed time measurement.
• Stopwatch measurements are performed in the
Stopwatch Mode, which you enter by pressing C.
▲
How the Stopwatch Works
There are two ways you can use the stopwatch: to measure elapsed time and lap/split
times like a standard stopwatch (see “To measure times with the stopwatch”), and to
keep track of the distance you cover while jogging or running. In order to use the
stopwatch to keep track of distance, you must first perform the steps listed below.
1. Set your basic data. See “Basic Data”.
2. Turn on the pacer signal. See “To turn the pacer signal on and off”.
Note
• In order to obtain accurate distance calculations, you must set accurate basic data
and keep your exercise pace in accordance with the pacer signal emitted by the
watch.
• See “How Stopwatch Data is Stored” for information about the type of data the watch
stores in memory when you use the stopwatch.
• Use the Recall Mode to view data stored in memory.
• You can view distance covered data only by recalling it in the Recall Mode. It does
not appear on the Stopwatch Mode screen.
To measure times with the stopwatch
Note
• Pressing D to perform a lap/split time operation freezes the lap/split time at that
point on the display for about eight seconds. After that, the display returns to normal
stopwatch time measurement.
• During a stopwatch time measurement operation, the upper part of the display
shows the hour digit and the current lap/split number, the center part shows the
current split time, and the lower part shows the current lap time.
• When the pacer signal is turned on, it sounds for the first 30 seconds after you start
a stopwatch time measurement operation. After that, the pacer signal sounds for 30
seconds whenever you press B.
• If the pacer signal does not sound even though you have it turned on, press B to
change the positions of the lap time and split time on the display. This should cause
the pacer signal to sound.
Selecting the Stopwatch Screen Format
The following shows how you can control the position of the lap time and split time on
the stopwatch screen.
Lap/Split number
Split
time
Lap time
• The Lap/Split indicator uses arrows to indicate the location the lap time and split
(elapsed) time.
• When you first start a stopwatch operation by pressing A, both the center part and
the lower part of the display show minutes, seconds, and 1/100 second. Whenever
the time shown in the lower part of the display is greater than 60 minutes, the display
format changes to show hours, minutes, and seconds. Whenever the time in the
center part of the display is greater than 10 hours, the display format changes to
show hours, minutes, and seconds.
Elapsed Time
A
Start Stop
Lap/Split Times
A
Start Lap/Split
Press B.
Lap/Split
indicator
A
D
Lap time Hours
➤
➤
Split time
▲
AA
Re-start Clear
D
➤➤
Next Lap/
Split
Stop
A
➤
Stop
Minutes
Seconds
More than 10 hours
D
➤➤➤➤
D
➤
Clear
1
USER’S GUIDE 2535
Basic Data
The term “basic data” refers to the pacer signal setup, and information about your
stride length.
Important!
• You cannot change basic data settings while a Stopwatch Mode time measurement
operation is in progress. Stopwatch operation must be stopped and the Stopwatch
screen must be cleared to all zeros before you can change basic data settings.
• Whenever you want to change the stride length unit, you must first reset the
Cumulative Total screen to zero. See “To reset the cumulative total screen” for
information about how to do this.
• Be sure to update basic data values whenever the person using the watch changes.
Pacer Signal
The pacer signal of this watch beeps in accordance with a pacer value (rate) set by
you. You can use the pacer signal to maintain a constant pace while jogging or
running. You can also turn off the pacer signal when you do not want to use it.
• The pacer value you set specifies the number of beeps per minute.
• Turning on the pacer signal causes the watch to beep at the rate specified by the
pacer value.
• You can set a pacer value in the range of 100 to 200 beats per minute, in units of 5.
• You can disable the pacer function by setting a pacer value of xxx. While the pacer
value is set to xxx, the watch does not calculate distance covered.
Stride Length
You can specify either centimeters (XM) or inches (Yn) as the stride length unit. The
unit you specify for the stride length unit also determines the unit of measurement
used for the distance value in the Stopwatch Mode and Recall Mode, as shown below.
Stride Length Unit
Centimeters (XM)
Inches (Yn)
• The following examples illustrate how you can calculate values for this setting.
239 steps required to run around a 300-meter track.
300 (meters)
239 steps required to run around a 330-yard track.
330 (yards)
To configure your basic data
Setting
Pacer value
Pacer signal
Stride length
Stride length unit
• When the pacer signal is turned on, the pacer signal sounds in accordance with the
pacer value while the pacer signal or pacer value setting screen is on the display.
4. Press B to exit the setting screen.
• If you find that the stride length unit won’t change reset the cumulative total to all
zeros.
To turn the pacer signal on and off
Setting Range
40 to 190 cm
16 to 76 in
÷
239 (steps) = 1.255 (approximately 125 cm)
÷
239 (steps) × 36 = 49.70 (approximately 50 inches)
1. While the Stopwatch Mode screen shows all zeros
0 H
(
appears flashing on the display. This indicates the
setting screen.
2. Press C to move the flashing in the sequence shown
below to select other settings.
3. When the setting you want to change is flashing, use
D and A to change it as described below.
Screen Button Operations
1. While the Stopwatch Mode screen shows all zeros
0 H
(
appears flashing on the display. This indicates the
setting screen.
2. Press C once to display the pacer signal setting
screen.
3. Press D to toggle the pacer signal on (ON) and off
(OFF).
• A pacer signal on indicator (
4. Press B to exit the setting screen.
Setting Increment
5 cm
2 in
00'00''00), hold down B until the pacer value
Pacer value Pacer signal
Stride length unit
Use D (+) and A (–) to change the setting.
• Selecting xxx disables the pacer signal.
Press D to toggle the pacer signal on (ON)
and off (OFF).
Use D (+) and A (–) to change the setting.
Press D to toggle between centimeters (XM)
and inches (Yn).
00'00''00), hold down B until the pacer value
setting it turned on.
Stride length
Distance Unit
Kilometers (km)
Miles (mi)
) appears when this
Recall Mode
Use the Recall Mode to recall and delete records stored
by the Stopwatch Mode.
• Stopwatch records are stored in “logs” that are created
automatically by the watch. See “Memory Management”
for more information.
• The title screen of the newest log appears first whenever
you enter the Recall Mode.
• Log numbers are automatically assigned in sequence,
starting from 01.
• All of the operations in this section are performed in the
Recall Mode, which you enter by pressing C.
To recall stopwatch records
In the Recall Mode, use B to scroll through the log title
screens, starting from the newest one, as shown below.
When the title screen of the log you want is displayed, use
D and A to cycle through the records contained in the log.
Log number
Log Title Screen
Distance covered
Creation date
(Month – Day)
Cumulative Total Screen
▲
Log Title Screen
▲
Press B.
▲
• The cumulative total screen shows the total distance since the last cumulative total
distance reset.
• The locations of the lap time and split time (middle or bottom of the display) in the
Stopwatch Record screen are determined by the display format you last selected in
the Stopwatch Mode.
• The BEST indicator identifies the record that contains the best lap time in the log.
• If a best lap time record is deleted automatically when the log becomes full, the
BEST indicator will not be transferred to the record with the next best lap time. See
“Memory Management” for more information about automatic deletion of records.
• The unit of measurement used for the distance calculation depends on the unit you
select for your stride length as shown in the table below. See “To configure your
basic data” for more information.
Selected Stride Unit Distance Unit
XM (centimeters) km (kilometers)
Yn (inches) mi (miles)
To delete a log
1. In the Recall Mode, display the title screen of the log you want to delete.
• See “To reset the cumulative total screen” below for information about what
happens when you select the cumulative total screen here.
2. Hold down A and D until the watch beeps and
display.
• This deletes the log and all the records inside it. Deleting a log does not change the
cumulative total distance value.
To reset the cumulative total screen
1. In the Recall Mode, display the cumulative total screen.
2. Hold down A and D until the watch beeps and
display.
• This resets the cumulative total distance to zero, without deleting any logs or
records. A new cumulative total will start with the next stopwatch operation you
perform.
Lap/Split number
Press A.
▲
Press D.
▲
Stopwatch Record
Screen
Split time
▲
Lap time
CLR stops flashing on the
CLR stops flashing on the
Best Lap Time
BEST indicator
▲
▲
Screen
▲
Countdown Timer
You can set the countdown timer within a range of one
Minutes
Hours
Timekeeping Mode time
• If the countdown start time is not displayed, use the procedure under “To use the
countdown timer” to diplay it.
2. Press C to move the flashing between the hour and minute settings.
3. Use D (+) and A (–) to change the flashing item.
• To set the starting value of the countdown time to 100 hours, set 0:00.
4. Press B to exit the setting screen.
To use the countdown timer
Press A while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, the alarm
sounds for 10 seconds or until you stop it by pressing any button. The countdown
time is automatically reset to its starting value when the alarm sounds.
• Press A while a countdown operation is in progress to pause it. Press A again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing A), and then
press D. This returns the countdown time to its starting value.
To turn auto-repeat on and off
minute to 100 hours. An alarm sounds when the
countdown reaches zero.
• You can also select auto-repeat, which automatically
Seconds
restarts the countdown from the original value you set
whenever zero is reached.
• Countdown timer functions are available in the
Countdown Timer Mode, which you can enter using C.
To set the countdown start time
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down B until the hour
setting of the countdown start time starts to flash, which
indicates the setting screen.
While the countdown start time is displayed on the
Countdown Timer Mode screen, hold down D for about
two seconds to toggle auto-repeat on (
off (
not displayed).
• When auto-repeat is turned on, the alarm sounds and
countdown starts again whenever the countdown
reaches zero. You can stop the countdown by pressing
A, and manually reset to the countdown start time by
pressing D.
• Auto-repeat timing repeats up to seven times.
displayed) and
2
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