CASIO STR900-1V
Owner's Manual

MO0507-EA

Operation Guide 2985
About This Manual
� 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)

General Guide
� Press C to change from mode to mode. � In any mode, press L to illuminate the display. Timekeeping Mode Press C.

Stopwatch Mode

Recall Mode

Dual Time Mode

Alarm Mode

Countdown Timer Mode

Timekeeping
Month � Day Year Day of week

Use the Timekeeping Mode to set and view the current time and date.

L

To measure times with the stopwatch
Elapsed Time A �A
Start Stop �

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.
Seconds Hour Minutes 12/24-Hour Format

�A Re-start

�A Stop �

Lap/Split Times D A �
Start Lap/Split

D
Next Lap/ Split

A
Stop

Hour : Minutes Seconds PM indicator

Day

Month

Year

Note � Pressingthe display for about eighttime operation freezes the lap/split time at that point on D to perform a lap/split 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 current lap/split number and the current lap time, and the lower part shows the current split 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 Lap time Lap/Split indicator
Press B. �

3. When the setting you want to change is flashing, use D and A to change it as described below. Setting Screen Button Operation Seconds Hour, Minutes 12/24-Hour Format Year, Month, Day 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.

L

Split time

Split time

Stopwatch
Remaining memory Timekeeping Mode time

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.

� 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 upper part and the lower part of the display show minutes, seconds, and 1/100 second. Whenever the time shown in the upper part of the display is greater than 60 minutes, the display format changes to show hours, minutes, and seconds. Whenever the time in the lower part of the display is greater than 10 hours, the display format changes to show hours, minutes, and seconds.

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.

Hours

Minutes Seconds 1/100 second

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.

�

4. Press B to exit the setting screen. � 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.

L

Lap time

Hours Seconds Minutes More than 10 hours

L

L

�D Clear �D Clear

L

1