Pro will record the lap time. After the TIMER has been stopped (by pressing the "TOP" button) the previous twelve lap times can be reviewed by press- ing "SET" button. Additionally, the computer will display the total time when LPTOT is shown.
7. Interval Timer (INT)
Your SpeedZone® Pro is equipped with an Interval Timer. This feature allows you to customize your training by integrating a programmable repeating countdown timer into your workout. To enter the interval timer mode, press the "MODE" button until "INT" appears Dot Matrix Display Area of the screen. You are now in interval timer mode. To set the inter- val timer, hold the "SET" button for
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Km/h
FIGURE 15. INTERVAL TIMER SCREEN
three seconds. The hour digit will begin flashing. Press the "MODE" Button until the desired number appears. (Hold down the "Mode" button to scroll quickly) Press the "SET" button once to set this number and advance to minutes. Repeat this process until minutes and seconds are
set to the desired settings. Press the "SET" button to exit programming mode. Once the time interval timer is programmed, press the "TOP" button to start/stop the countdown. (See fig- ure 15). Note: The shortest interval that can be set is 5 seconds.
8. Altimeter (ALTI)
Your SpeedZone® Pro contains an extremely accurate altimeter that is capable of recording changes in alti- tude in increments as small as three feet (one meter). This altimeter calculat- ed altitude by precisely measuring barometric pressure. Due to normal changes in barometric pressure, you may need to recalibrate your SpeedZone® Pro on a daily basis. You should be able to find the altitude
where you live on a topographical map or by contacting a nearby airport.
9. Altimeter Calibration
To calibrate your altimeter, press the "MODE" button until "ALTI" appears. Note: if your display says "ALTI 
" or "%GRD", press the "SET" button to change to "ALTI". Then press the "SET" button for three seconds. The first altitude digit will begin flashing. Press the "MODE" button until the desired number appears. Press the "SET" button once to set this number and advance to the next. Repeat this process until you have entered the desired altitude. Press the "SET" button to exit programming mode.
Note: Altitude will be displayed in feet when speed is measured in miles per
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