CHAPTER 9 COPYRIGHT AND TRADEMARK NOTICE ................... 45
CHAPTER 10 CE COMPLIANCE ..................................................... 45
CHAPTER 11 LIMITS OF LIABILITY AND ISO 9001 COMPLIANCE 46
CHAPTER 12 DISPOSAL OF THE DEVICE ..................................... 46
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CHAPTER 1 INTRODUCTION
1.1 GENERAL INFORMATION
The Wristop Computer is a reliable high precision electronic instrument, intended for recreational use. The
outdoor enthusiast who enjoys venturing in sports like skiing, kayaking, mountain climbing, hiking and biking
can rely on the Wristop Computer’s accuracy.
The ergonomically designed Wristop Computer weighs only 2 ounces or 55 grams and is accompanied by a
LCD featuring a large number display intended to be clearly visible in almost any condition.
Note: The Wristop Computer should not be substituted for acquiring measurements that require professional or
industrial precision and should not be used to acquire measurements when skydiving, hang gliding, paragliding,
gyrocopter riding and flying small aircraft.
IMPORTANT NOTE: A PULLOUT PAGE LOCATED ON THE FRONT INSIDE COVER OF THIS MANUAL
GRAPHICALLY ILLUSTRATES AND IDENTIFIES THE PROPERTIES OF THE WRISTOP COMPUTER AND
LCD DISPLAY. THIS PAGE IS DESIGNED TO FACILITATE THE USER’S UNDERSTANDING OF THE
FUNCTIONS AND PROCESSES TO SETUP THOSE FUNCTIONS.
1.2 MAIN FUNCTIONS (MODES)
Though the user’s guide applies to all the Wristop Computer models, functions and differences in operation of
the models are noted in the table below.
In each of the functions, associated sub modes provide further enhancements to the usefulness of its owner.
All key features and sub modes are discussed in detail following this section.
Note: Wristop computer models Vector and X-Lander share the same features as well as Altimax and SLander do. The difference is the Vector and Altimax are housed in a sturdy plastic case and the X-Lander and
S-Lander are set in brushed aluminium.
1.2.1 Backlight Features
The Wristop Computer has an electroluminescent backlight. This is initiated by pressing and holding the
[Mode] button for 2 seconds. The backlight will remain on for 5 seconds. Pressing the [Mode] button during
this time will restart the 5 second period, continuing the backlight feature.
1.2.2 Water Resistance
This product is water resistant. Water resistance is tested to 30m/100ft according to ISO 2281 standard
(www.iso.ch).
Note: The Wristop computer is not a dive instrument.
1.3 BUTTON FUNCTIONS
Four buttons are used to operate the Wristop Computer: [Mode], [+] (ON/OFF), [-] (Fast Bearing), and [Select].
1.3.1 The [Mode] Button
Is located on the top right of the Wristop Computer.
• In the main mode level, pressing the [Mode] button allows the user to select or move from one mode or
function to the next (TIME, ALTI, BARO, COMP).
• In the sub mode level, pressing the [Mode] button returns the user to the main mode level.
• In the setup process, pressing the [Mode] button accepts the changes or preferences. Pressing the button
again will return the user to the main mode level.
• Pressing the button for 2 seconds activates the backlight feature.
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1.3.2 The [+] Button
Is located on the bottom right of the Wristop Computer.
• In the setup process, pressing the [+] button changes or scrolls the value upward.
• In the timing and logbook functions, this button can act as a start/stop (or On/Off) button.
1.3.3 The [-] Button
Is located on the bottom left of the Wristop Computer.
• In the setup process, pressing the [-] button changes or scrolls the value downward.
• For the Vector and X-Lander models this button is also known as the “Fast Bearing” button. Pressing
the [-] button in any of the main modes will quickly display the compass mode, showing either the normal
compass or bearing tracking feature (depending on what display has been chosen in the compass mode).
• For the Altimax and S-Lander models, this button is also called the “Fast Cumulative” button. Pressing the
[-] button in any of the main modes will quickly display the cumulative information of the current logbook
recording.
Note: Details of this feature can be located on Page 26 of this manual.
1.3.4 The [Select] Button
Is located on the top left of the Wristop Computer.
• In the main mode level, pressing the [Select] button allows the user to enter into the sub modes of the
particular function or return to the main mode the user is in.
• In the main mode or sub mode, pressing and holding the [Select] button for more than 2 seconds allows the
user to enter the setup process.
• In the setup process, the [Select] button allows the user to move between settable units or values and
determine preferences.
1.4 LCD DISPLAY
The display is designed to offer maximum clarity and simplicity to the user.
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The display is divided into several regions or areas.
• The Outer Circumference encompasses the outer boundary of the LCD display. The peripheral segments
are found in the Outer Circumference.
• A Barometric Trend Indicator provides a quick reference for forecasting weather conditions.
• Field 1 displays values either numbers or text depending on the mode or sub mode the user is in.
• Field 2 displays large numbers and/or related unit of measure of the function.
• A Mode Indictor Bar displays the main modes (functions) of the Wristop Computer (a triangle arrow located
just below the bar indicates the mode the user is viewing).
• Field 3 displays numbers and/or text.
Barometer
Trend
Indicator
SELECT
BUTTON
Mode Bar
Indicator
Field 1
Field 2
Bubble
Level
MODE
BUTTON
Outer
Circumference
Field 3
- BUTTON
+ BUTTON
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1.5 MEASUREMENTS AND UNITS
The Wristop Computer supplies two units of measure: metric or imperial.
Metric Unit of MeasureImperial Unit of Measure
mft
m/minft/min
°C°F
mbarinHg
1.5.1 Selecting the Units of Measurement
To change the unit of measure displayed:
1. Check the mode indicator. If the mode arrow is not on TIME, PRESS the [Mode] button until the arrow is
directly below TIME on the Mode Indicator Bar.
2. PRESS the [Mode] and [Select] buttons simultaneously and hold in for 3 seconds. Field 1 will display “SET”
momentarily and then display “UNI” (Fig. 43).
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically exit
setup.
WARNING: If the user presses the [Select] button (and does not hold for 2 seconds) while in the “UNI” setting
mode, the user will be in the Pressure Sensor Calibration. Refer to the next section for details.
3. PRESS the [Select] button and hold in for 2 seconds. Located to the right in Field 2, “m” or “ft” will begin to
flash.
4. PRESS the [+] button to toggle between “m” and “ft”.
5. At the unit of measure desired, PRESS the [Select] button to move to the next unit. Located below the “m” or
“ft” in Field 2, “mbar” or “inHg” will begin to flash.
6. PRESS the [+] button to toggle between “mbar” and “inHg”.
7. At the unit of measure desired, PRESS the [Select] button to move to the next unit. Located at the top right
in Field 1 (just above the bubble), °C or °F will begin to flash.
8. PRESS the [+] button to toggle between °C and °F.
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9. At the unit of measure desired, PRESS the [Select] button to move to the next unit. Located at the top
center in Field 1, “m/min” or “ft/min” will begin to flash.
10 PRESS the [+] button to toggle between “m/min” and “ft/min”.
11 At the unit of measure desired, PRESS the [Mode] button to accept the changes. PRESS the [Mode] button
again to return to the main time mode.
Selecting the units of measurement is complete.
1.6 PRESSURE SENSOR CALIBRATION
This is a FACTORY SETTING CALIBRATION. If you are in this mode we highly suggest that you exit this setting
by pressing the [Mode] button. Calibrating this setting will ADVERSELY IMPACT all altitude and barometric
settings of the Wristop Computer.
In this setting, the user will be viewing “SNR” (Sensor) in Field 1. Do not press the [+] or [-] button to adjust the
pressure. Simply exit this setting by pressing the [Select] button to return to the “UNI” setting mode or by
pressing the [Mode] button to return to the main mode.
If the Pressure Setting Calibration has been altered, in error, please contact our Product Support Department.
1.7 CARE AND MAINTENANCE
Perform only the detailed processes discussed in this manual. Do not perform any other service to the
Wristop Computer or attempt to open the case or remove the buttons or the bezel.
Protect your Wristop Computer from shocks, extreme heat and prolonged exposure to direct sunlight. If not in
use, your Wristop Computer should be stored in a clean, dry environment at room temperature.
The Wristop Computer can be wiped clean with a lightly moistened (warm water) cloth. Applying a mild soap to
the area can clean stubborn stains or marks.
Avoid exposing the Wristop Computer to strong chemicals like gasoline, cleaning solvents, acetone, alcohol,
adhesives, and paint, as they will damage the unit’s seals, case and finish.
Never attempt to take the Wristop Computer apart or service it yourself. Make sure the area around the sensors
(backside of the instrument) is kept free of dirt and sand. Never insert any objects into the sensor openings of
the Wristop Computer.
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1.7.1 Battery Replacement
The Wristop Computer operates on a three-volt lithium cell Type: CR 2430. The maximum life expectancy is
approximately 12-18 months.
A low battery-warning indicator is activated when 5-15 percent of the battery capacity is still available. When
this occurs we recommend replacement of the battery.
Extreme cold weather will activate the low battery-warning indicator. Though the indicator is activated, the
battery may not need to be replaced due to this condition. In temperatures above 10°C (50°F) and the low
battery warning indicator is activated, the battery will need to be replaced.
Note: Heavy use of the electroluminescent backlight, altimeter, and compass will significantly reduce the life of
the battery.
To replace the battery:
1. turn the Wristop Computer to view the backside;
2. insert a coin in the coin slot located on the battery compartment cover;
3. turn the coin counterclockwise to the open position marked on the back of the case;
4. remove the battery compartment cover;
5. remove the old cell from the battery compartment and ensure the o-ring and all surfaces are clean, dry and
not damaged. Do not stretch the o-ring;
6. place the new cell into the battery compartment (negative side down, positive side up);
7. ensure that the o-ring is in its place to keep the Wristop Computer waterproof. Place the battery compartment
cover back onto the backside of the Wristop Computer;
8. insert a coin back into the coin slot; and
9. turn the coin clockwise to the close position marked on the back of the case.
Note: Battery replacement should be performed with extreme care so as to ensure the Wristop Computer
continues to remain waterproof.It is the operator’s responsibility to take due care to ensure that the Wristop
Computer remains waterproof.
After every battery replacement, it is necessary to calibrate the magnetic sensor. Details on performing this
process are found in Calibrating the Compass section of this manual.
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CHAPTER 2 TIME MODE
The Time Mode provides the user with:
• an adjustable 24/12 hour clock display;
• a calendar pre-programmed to the year 2089; and
• three sub modes: three daily alarms, stopwatch and countdown timer.
To view and use the Time mode:
Check the Mode Indicator Bar. If the mode arrow is not on TIME, PRESS the [Mode] button until the arrow is
directly below TIME on the bar.
In the TIME mode (Fig. 10):
• Field 1 displays the day of the week.
• Field 2 displays the current time.
• Field 3 displays the date (month/day).
• The Outer Circumference graphically displays time in seconds.
The Time mode and all sub modes can be adjusted through the setup program of the Wristop Computer.
2.1 HOW TO SET THE TIME
To set the Time:
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 3, the seconds will begin to flash
(Fig. 11).
2. PRESS the [+] button to scroll the seconds upward or
PRESS the [-] button to reset the seconds to zero.
3. At the seconds desired, PRESS the [Select] button to move to the next setting. Located on right of Field 2,
the minutes will begin to flash.
4. PRESS the [+] button to scroll the minutes upward or
PRESS the [-] button to scroll the minutes downward.
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5. At the minutes desired, PRESS the [Select] button to move to the next setting. Located in the center of
Field 2, the hour will begin to flash.
6. PRESS the [+] button to scroll the hour upward or
PRESS the [-] button to scroll the hour downward.
7. At the hour desired, PRESS the [Select] button to move to the next setting. Located in Field 1, the 24 or 12
hour clock setting will begin to flash.
8. PRESS either the [+] or the [-] button to toggle between the 24hr and 12hr.
Note: If the 12 hour clock is chosen either AM/PM will appear below the hour in Field 2.
9. At the clock setting desired, PRESS the [Select] button to move to the next setting. Located in the center of
Field 2, the year will begin to flash (Fig. 12).
10. PRESS the [+] button to scroll the year upward or
PRESS the [-] button to scroll the year downward.
11. At the year desired, PRESS the [Select] button to move to the next setting. Located in the center of Field 3,
the month represented by a number will begin to flash.
12. PRESS the [+] button to scroll the month upward or
PRESS the [-] button to scroll the month downward.
13. At the month desired, PRESS the [Select] button to move to the next setting. Located to the right of Field 3,
the date will begin to flash.
14. PRESS the [+] button to scroll the date upward or
PRESS the [-] button to scroll the date downward.
Note: Once the user has determined the year, month and day, the Wristop Computer will supply the day of the
week in Field 1. The American month/day -view can not be changed to a day/month -view.
15. At the desired date, PRESS the [Mode] button to accept the changes and return to the main mode.
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically exit
setup.
Setting the time is now complete.
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2.2 DAILY ALARM SUB MODE
The Wristop Computer allows the user to select and enter settings for up to three alarms.
In the TIME mode, PRESS the [Select] button once to enter this sub mode.
In the Daily Alarm sub mode (Fig. 39) :
• Field 1 displays “ON” or “OFF” (the activation status of a particular alarm),
• Field 2 displays the time of a particular alarm, and
• Field 3 displays the alarm (1, 2, or 3) the user is viewing.
Press the [+] or [-] button to select alarms 1,2, or 3. Then, change the settings in the manner described in the
following section.
2.2.1 How to Set the Daily Alarms
1. PRESS the [+] or the [-] button to select the desired alarm to be set (1,2, or 3).
2. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1, the “ON” or “OFF” will begin to
flash.
3. PRESS either the [+] or the [-] button to toggle between “ON” and “OFF”.
4. At the setting desired, PRESS the [Select] button to move to the next setting. Located in the center of Field
2, the hour will begin to flash.
5. PRESS the [+] button to scroll the hour upward or
PRESS the [-] button to scroll the hour downward.
6. At the hour desired, PRESS the [Select] button to move to the next setting. Located on the right of Field 2,
the minutes will begin to flash.
7. PRESS the [+] button to scroll the minutes upward or
PRESS the [-] button to scroll the minutes downward.
8. At the minutes desired, PRESS the [Mode] button to accept the changes and exit the setup program. A
small bell will appear at the bottom left side in Field 2 to signify an alarm has been activated.
The Alarm setup is complete. To activate up to three alarms, please repeat steps 1-8 for the selected alarm (1,2, or 3).
Note: The Alarm volume can not be changed.
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2.3 STOPWATCH SUB MODE
The Wristop Computer stopwatch sub mode can provide split time measurement and two finish times up to
23 hours 59 minutes and 59 seconds.
In the TIME mode, PRESS the [Select] button twice to enter this sub mode.
In the Stopwatch sub mode (Fig. 40):
• Field 1 displays the seconds and tenths of a second,
• Field 2 displays the current time, and
• Field 3 displays hours and minutes and to the far right “stopwatch”.
2.3.1 How to Use the Stopwatch
There are three timing modes the user can employ:
• an elapsed time measurement;
• a split time measurement; and
• a two finish time measurement.
In the elapsed time mode:
1. PRESS the [+] button to start, stop, and restart the stopwatch in the stopwatch sub mode.
2. PRESS the [-] button to reset the stopwatch to zero once the stopwatch has stopped.
In the split time mode:
1. PRESS the [+] button to start the stopwatch in the stopwatch sub mode.
2. PRESS the [-] button once to stop the stopwatch and to display a split time.
3. PRESS the [-] button a second time to release the split time display and resume the stopwatch.
4. PRESS the [+] button to stop the stopwatch.
5. PRESS the [-] button to reset the stopwatch to zero once the stopwatch has stopped.
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In the two finish time mode:
1. PRESS the [+] button to start the stopwatch in the stopwatch sub mode.
2. PRESS the [-] button once to stop the stopwatch to display the finish time of the first person.
3. PRESS the [+] button to stop the stopwatch.
4. PRESS the [-] button a second time to release and display the finish time of the second person.
5. PRESS the [-] button to clear and to reset the stopwatch.
Note: When the stopwatch function is activated, the stopwatch will continue and remain in the background if
the user is in other modes or sub modes. The user can identify the stopwatch is still activated by the flashing
text “stopwatch” in Field 3.
2.4 COUNTDOWN TIMER SUB MODE
In the TIME mode, PRESS the [Select] button three times to enter this sub mode.
In the countdown timer sub mode (Fig. 41):
• Field 1 displays the seconds,
• Field 2 displays the current time, and
• Field 3 displays the hours and minutes and to the bottom far right the text “timer”.
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2.4.1 How to Set the Countdown Timer
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1, the seconds will begin to flash.
2. PRESS the [+] button to scroll the seconds upward or
PRESS the [-] button to scroll the seconds downward.
3. At the seconds desired, PRESS the [Select] button to move to the next setting. Located on right of Field 3,
the minutes will begin to flash.
4. PRESS the [+] button to scroll the minutes upward or
PRESS the [-] button to scroll the minutes downward.
5. At the minutes desired, PRESS the [Select] button to move to the next setting. Located in the center of Field
3, the hour will begin to flash.
6. PRESS the [+] button to scroll the hour upward or
PRESS the [-] button to scroll the hour downward.
7. At the hour desired, PRESS the [Mode] button to accept the changes and exit the setup program.
8. The countdown timer setup is complete.
2.4.2 How to Start the Countdown Timer
To start the countdown timer:
1. PRESS the [+] button to start, stop, and restart the timer in the countdown timer sub mode.
2. PRESS the [-] button to reset the timer to zero once the timer has stopped.
Note: When the countdown timer is activated, the countdown timer will continue and remain in the background
if the user is in other modes or sub modes. The user can identify the countdown timer still activated by the
flashing text “timer” in Field 3.
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2.5 DUAL TIME SUB MODE (ALTIMAX AND S-LANDER)
Note: This feature applies to the Altimax and S-Lander Wristop Computers
In the TIME mode, PRESS the [Select] button four times to enter this sub mode.
In the dual time mode (Fig. 42):
• Field 1 displays dUA indicating “dual time”,
• Field 2 displays the current time, and
• Field 3 displays the dual time (e.g. your home time).
The user can display the seconds while in this sub mode by pressing the [+] button, in Field 3 the seconds will
appear for 10 seconds. Afterwards the display returns back to showing the dual time.
2.5.1 Setting the Dual Time
In the dual time sub mode:
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 3, the hours will begin to flash.
2. PRESS the [+] button to scroll the hours upward or
PRESS the [-] button to scroll the hours downward.
3. At the hour desired, PRESS the [Select] button to move to the next setting. Located in Field 3 to the right of
the hour value, the minutes will begin to flash.
4. PRESS the [+] button to scroll the minutes upward or
PRESS the [-] button to scroll the minutes downward.
5. At the minutes desired, PRESS the [Mode] button to accept the changes and exit the setup program.
6. The dual time setup is complete.
The dual time stays the same, even though the time in the main time mode is adjusted. For example, if you set
the dual time to show your home time, your home time will always be displayed in this sub mode even though
you travel to a different time zone and adjust the time in the main time mode.
Note: The dual time function is completely independent and does not affect the alarms or the memory functions.
These are dependent of the current local time.
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CHAPTER 3 ALTIMETER MODE
The Altimeter mode provides the user with:
• an adjustable unit of measure either meter or feet: meter range -500 to 9,000; ft range -1,600 to 29,500;
• a resolution of 5m or 10ft;
• a display up-date on the rate of vertical movement in intervals of 1 second for 3 minutes, then every 10
seconds or less;
• an automatic 24-hour memory in one hour intervals showing altitude and vertical ascent/descent rate; and
• a logbook, recording approximately 3800 sets of data (one set = altitude, vertical ascent/descent rate and
time).
To view and use the Altimeter mode:
Check the Mode Indicator Bar. If the mode arrow is not on ALTI, PRESS the [Mode] button until the arrow is
directly below ALTI on the bar.
In the ALTIMETER mode (Fig. 1):
• Field 1 displays the vertical ascent or descent rate;
• Field 2 displays the current altitude in increments of 5 meters or 10 feet (depending on the unit of measure
selected); and
• Field 3 displays the current time.
• The Outer Circumference graphically displays the altitude in hundreds of meters or feet over a full thousand
where one complete circle is equivalent to 1000.
IMPORTANT NOTE: IN ORDER TO SET THE ALTITUDE IN THE ALTIMETER MODE, THE ALTITUDE MUST
BE KNOWN. THAT INFORMATION CAN BE FOUND BY UTILIZING A TOPOGRAPHICAL MAP, IDENTIFYING
THE CURRENT LOCATION WITH THE ASSOCIATED ALTITUDE MARKED. THE USER CAN PROCEED
AND FOLLOW THE INSTRUCTIONS, SETTING THE ALTIMETER, PROVIDED IN THE SECTION BELOW.
DETAILS REGARDING THE EFFECT OF AIR TEMPERATURE ON ALTITUDE MEASUREMENT ARE SHOWN
ON PAGE 41 OF THIS MANUAL.
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IF THE ALTITUDE IS NOT KNOWN, THE USER CAN SET THE SEA LEVEL PRESSURE IN THE BAROMETRIC
MODE (REFER TO PAGE 31, SETTING THE SEA LEVEL PRESSURE).
SETTING THE SEA LEVEL PRESSURE WILL ADJUST THE ALTIMETER TO THE CURRENT ALTITUDE
WITHIN SOME TEN METERS OR FEW HUNDRED FEET.
INFORMATION ON THE CURRENT SEA LEVEL PRESSURE CAN BE OBTAINED THROUGH NEWSPAPERS,
LOCAL NEWS AND RADIO WEATHER REPORTS, THE LOCAL AIRPORT FACILITY OR THROUGH THE
INTERNET UNDER LOCAL WEATHER.
3.1 SETTING THE ALTIMETER
In setting the Altimeter, there are three processes that can be performed:
• the Reference Altitude (known altitude at the current location),
• the Altitude Alarm (signifies the user when a certain altitude, programmed, is reached), and
• the Logbook Recording Interval (allows the user to view the altitude and rate of vertical movement within a
chosen interval of time).
To begin:
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1 is the text “RE” (indicating reference
altitude), located in Field 2, the current altitude will begin to flash (Fig. 2).
2. PRESS the [+] button to scroll the altitude upward or
PRESS the [-] button to scroll the altitude downwards.
3. At the desired reference altitude, either PRESS the [Mode] button to accept the changes and return to the
main mode or PRESS the [Select] button to move to the next setting. Located in Field 1, the “ON” or “OFF”
will begin to flash (Fig. 3).
4. PRESS either the [+] or the [-] button to toggle between the “ON” and “OFF” for the Altitude Alarm.
5. At the desired setting, PRESS the [Select] button to move to the next setting. Located in the center of Field
2, the alarm altitude will begin to flash.
6. PRESS the [+] button to scroll the altitude upward or
PRESS the [-] button to scroll the altitude downwards.
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7. At the desired altitude, either PRESS the [Mode] button to accept the changes and return to the main mode
or PRESS the [Select] button to move to the next setting. Located in Field 1, the text INT and located in
Field 2 the time interval will begin to flash (Fig. 4).
8. PRESS either the [+] or the [-] button to scroll through the intervals. There are four time intervals 20 seconds,
1 minute, 10 minute or 60 minute.
Recommended interval to use:
ActivityInterval
Skiing20 sec or 1 minute
Biking20 sec or 1 minute
Hiking10 Minute
Mountaineering10 minute or 60 minute
Note: In selecting the interval, the user chooses a) the time period for recording the altitude, the vertical ascent/
descent rate as well as the current time to be stored into the logbook and b) the timeout or maximum recording
time of a logbook. The shorter the interval the more accurate the information due to the fact the sampling rate
is faster. Timeouts are discussed on page 25.
9. At the desired interval, PRESS the [Mode] button to accept the changes and exit the setup program.
Once the user completes the process in setting the reference altitude of the current location to the known
altitude, the Wristop Computer will also correct the sea level pressure, and therefore, it will not be necessary for
this function to be set.
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically
exit setup.
Note: A 10-minute recording interval means that the Wristop Computer records data every 10 minutes.
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3.2 ALTITUDE DIFFERENCE MEASUREMENT SUB MODE
In the Altimeter mode, PRESS the [Select] button once to enter this sub mode.
In the Altitude Difference measurement sub mode (Fig. 13):
• Field 1 displays the vertical ascent or descent rate;
• Field 2 displays the current altitude in increments of 5 meters or 10 feet depending on the unit of measure
selected; and
• Field 3 displays the running time; to the left of the time is the text “differ”.
• The Outer Circumference graphically displays the altitude in hundreds of meters or feet over a full thousand
where one complete circle is equivalent to 1000.
The running time is displayed up to 39 hours and 59 minutes; after which three dashes (-:--) appear on the
display in Field 3. If the user allows the difference measurement sub mode to remain on visual display continuously
for 12 hours, the Wristop Computer will automatically return to the main time mode.
This mode does continue in the background and allows the user to move to other modes and at the convenience
of the user can return to this sub mode to display the current status.
Note: The difference measurement mode is a relative measurement. Any change in the reference altitude
during the altitude difference measurement will effect the measured altitude. We recommend that the reference
altitude always be checked and set again prior to beginning a new measurement.
3.2.1 How to Start the Altitude Difference Measurement
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1 is the text “SET”; located in Field
2, zero will begin to flash (Fig. 14).
2. PRESS the [Mode] button to accept the flashing zero and start the difference measurement.
If the user does not desire to begin the difference measurement, PRESS either the [+] or the [-] button to toggle
to the current altitude then PRESS the [Mode] button to exit the setup program.
Note: If the user does not press any button for 1 minute in the setup mode, the display will return to the main
mode without zeroing the altimeter.
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3.3 24-HOUR MEMORY SUB MODE
In the Altimeter mode, PRESS the [Select] button twice to enter this sub mode.
In the 24-hour memory sub mode (Fig. 15):
• Field 1 displays the vertical ascent or descent rate;
• Field 2 displays the current altitude in increments of 5 meters or 10 feet depending on the unit of measure
selected; and
• Field 3 displays the particular hour and to the left the text “memory”.
• The Outer Circumference displays graphically the altitude in hundreds of meters or feet over a full thousand
where one complete circle is equivalent to 1000.
To view the information compiled in the 24-hr memory:
1. PRESS the [-] button to scroll back down in increments of one hour and view the vertical ascent/descent
rate and the altitude for that particular hour.
2. PRESS the [+] button to scroll back up.
Note: Replacing the battery will not erase this information.
3.4 LOGBOOK SUB MODE
In the Altimeter mode, PRESS the [Select] button three times to enter this sub mode. The logbook mode
features five displays. The displays automatically rotate showing the first display for 7 seconds then proceeds
showing displays 2 through 5 at 4 second intervals.
In the first display (Fig. 16):
• Field 1 displays the year;
• Field 2 displays the text “LO” with the current logbook number flashing; and
• Field 3 displays the month and day of the particular logbook number. To the left of the month/day, is the text
“Log Book”.
The user can PRESS the [-] to scroll down to view previous logs captured and then PRESS [+] to scroll up to the
current logbook.
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The second display shows the ascent information for the particular logbook that is being viewed (Fig. 17).
• Field 1 displays the average ascent rate during the event;
• Field 2 displays the total vertical ascent ; and
• Field 3 displays the text “ASC” along with the text “Log Book” to the left.
The third display shows the descent information for the particular logbook that is being viewed (Fig. 18).
• Field 1 displays the average descent rate during the event;
• Field 2 displays the total vertical descent; and
• Field 3 displays the text “dSC” along with the text “Log Book” to the left.
The fourth display shows the number of laps (runs; either ascents or descents) completed for the particular
logbook that is being viewed (Fig. 19).
• Field 2 displays the total number of ascents or descents ; and
• Field 3 displays the text “LAP” along with the text “Log Book” to the left.
Note: A Lap is a vertical movement either ascent or descent equaling 150 ft (50 meters) or above.
The fifth display shows the time duration of recording information in the particular logbook that is being viewed
(Fig. 20).
• Field 2 displays the total time of the log ; and
• Field 3 displays the text “dUr” along with the text “Log Book” to the left.
Note: If the logbook is recording, based on the interval chosen the logbook will record up to that particular time
period. Once the time period has been reached the Wristop Computer, will alert the user that the logbook
recording has expired (known as a timeout). For setting the logbook interval refer to Setting the Altimeter on
Page 21.
The timeouts are as follows:Logbook intervalsMaximum recording time
20 second10 hours
1 minute12 hours
10 minute7 days
60 minute10 days
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3.4.1 How to Start and Stop a Logbook
For the Vector and X-Lander models:
In the Altimeter main mode or the difference measurement sub mode, PRESS the [+] button. A beep will be
heard and the flashing text “ Log Book” will appear in Field 3 to indicate the start of the recording.
Note: For the Vector and X-Lander models,while in the recording phase of the current logbook, the user will be
unable to view this data. The user can view this data only after the recording session has stopped, but previously
recorded logbooks can be viewed at any time.
The recording can be stopped by pressing the [+] a second time. A beep will be heard and the “Log Book” text
will be removed from Field 3 indicating recording has stopped.
Note: In order to prevent accidental starts/stops of a logbook, the Vector or X-Lander models should be in
another function other than the altimeter mode. If the logbook is activated the logbook will continue to recorded
even if the Vector or X-Lander is in another mode.
For the Altimax and S-Lander models:
Logbook recording starts by pressing the [+] button twice within 2 seconds. Logbook recording stops by
pressing the [+] button twice as well within 2 seconds.
Note: For the Altimax and S-Lander, Vector and X-Lander models logbooks are self-erasing and cannot be
cleared by the user.
Note: If you desire greater precision, start new logbooks more often or lower the recording interval.
3.4.2 Fast Cumulative Button
This function is furnished in the Altimax and S-Lander models. This allows the user to check the cumulative
vertical ascent/descent in feet or meters, as well as number of runs of the current logbook while recording.
Accessing this information is performed by pressing the [-] button in any of the main modes. When activated,
three displays will automatically rotate in intervals of four seconds.
• The first display shows the accumulative vertical ascent since the beginning of the current logbook.
• The second display shows the accumulative vertical descent since the beginning of the current logbook.
• And finally, the third display shows the number of runs accomplished during the current logbook.
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After the third display is shown, the Altimax and S-Lander automatically return to the main mode in which the
user was viewing.
Note: During this process, pressing the [-] button allows the user to move on to the next of the three displays.
3.5 LOGBOOK HISTORY SUB MODE
The Logbook history shows a summation of all logs recorded.
In the Altimeter mode, PRESS the [Select] button four times to enter this sub mode. The logbook history mode
features four displays.
In the first display (Fig. 24):
• Field 1 displays the year when the logbook history has been last cleared;
• Field 2 displays the text “HIS”; and
• Field 3 displays the month and day when the logbook history has been last cleared. To the left of the month/
day, displayed is the text “Log Book”.
PRESS [+] to scroll through the different displays.
In the second display (Fig. 25):
• Field 1 displays the text “HI”;
• Field 2 displays the highest altitude recorded since the last date cleared; and
• Field 3 displays the date when it was reached with the text “Log Book” to the left.
In the third display (Fig. 26):
• Field 1 displays the text “ASC”;
• Field 2 and 3 show up to an 8 digit accumulative vertical ascent since the last reset. Field 2 is activated
when the value of the vertical ascent is beyond the 3 digit value displayed in Field 3.
In the fourth display (Fig. 27):
• Field 1 displays the text “dSC”;
• Field 2 and 3 show up to an 8 digit accumulative vertical descent since the last reset. Field 2 is activated
when the value of the vertical ascent is beyond the 3 digit value displayed in Field 3.
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3.5.1 Clearing the Logbook History
To clear the history of the logbook (Fig. 28):
1. In any of the logbook history displays, PRESS the [Select] button and hold in for 2 seconds. Located in
Field 1 is the text “CLR”; in Field 2 the text “HIS”; and in Field 3, “nO” will begin to flash.
2. PRESS the [+] button to toggle between “YES” and “NO”.
3. PRESS the [Mode] button to accept the option “YES”.
The logbook history is erased and a new starting date is set to begin new cumulative measurements.
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically
exit setup.
We recommend that the logbook history be cleared prior to beginning logbook recording(s).
CHAPTER 4 BAROMETER MODE
The Barometer mode provides the user with:
• an adjustable unit of measure mbar or inHg; mbar range 300 to 1 100 mbar, inHg range 8.90 to 32.40;
• a resolution of 1 mbar or 0.05 inHg;
• a one hour interval measuring to estimate barometric trend;
• an automatic 4-day memory of atmospheric pressure for the last 6 hours in 1-hour intervals, thereafter, in 6hour intervals;
• temperature compensation (temperature does not effect the pressure within the specified temperature
range)
• a temperature range -20O to 60OC or -5O to 140OF; and
• a temperature resolution of 1
Note: Body heat will effect temperature when the Wristop Computer is worn on the wrist. To achieve an
accurate reading remove the Wristop Computer from the wrist and allow at least 15 minutes before reading
the temperature.
If you’ve been in the barometric mode for more than 15 minutes with no rate of vertical movement, you should
O
C or F.
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allow 1 hour for the Wristop Computer to adjust the temperature. To acquire a quicker up-date of the temperature,
press the [Mode] button 4 times to re-enter the mode.
To view and use the Barometer mode:
Check the Mode Indicator Bar. If the mode arrow is not on BARO, PRESS the [Mode] button until the arrow is
directly below BARO on the bar.
In the Barometer mode (Fig. 5):
• Field 1 displays the current temperature.
• Field 2 displays the current absolute atmospheric pressure.
• Field 3 displays the current time.
• The Outer Circumference graphically displays the atmospheric pressure over 100 millibars or 1 inHg where
one complete circle is equivalent to 100 mbar/1 inHg, depending on the unit of measure chosen.
Note: The absolute pressure is the actual pressure in any location at any given time. Where as, sea level
pressure is the corresponding pressure at sea level.
4.1 PRESSURE DIFFERENCE MEASUREMENT SUB MODE
The pressure difference is not referring to the sea level pressure, but to the current barometric pressure
measured by the watch.
In the Barometer mode, PRESS the [Select] button once to enter this sub mode.
In the Pressure Difference Measurement submode (Fig. 30):
• Field 1 displays the change in temperature.
• Field 2 displays the change in atmospheric pressure.
• Field 3 displays the current time; to the left of the time is the text “differ”.
• The Outer Circumference graphically displays the change in pressure where one full circle equals 100
mbars or 1 inHg.
This mode does continue in the background and allows the user to move to other modes and at the user’s
convenience can return to this sub mode to show the current reading.
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4.1.1 How to Start the Pressure Difference Measurement
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1 is the text “SET”; located in Field
2, zero will begin to flash (Fig. 29).
2. PRESS the [Mode] button to accept the flashing zero and start the difference measurement.
If the user does not desire to begin the difference measurement, PRESS either the [+] or the [-] button to toggle
to the current barometric pressure reading, then PRESS the [Mode] button to exit the setup program.
Note: If the user does not press any button for 1 minute in the setup mode, the display will automatically exit
setup.
4.2 4-DAY MEMORY SUB MODE
In the Barometer mode, PRESS the [Select] button twice to enter this sub mode. This function allows the user
to follow changes in pressure that will assist forecasting changes in weather condition (i.e. storms).
In the 4-day memory sub mode (Fig. 31):
• Field 1 displays the day of the week the user is in;
• Field 2 displays the atmospheric pressure; and
• Field 3 displays the time and to the left the text “memory”.
• The Outer Circumference graphically displays the atmospheric pressure where one full circle equals
100 mbars or 1 inHg.
To view the information compiled in the 4-day memory:
PRESS the [-] button to scroll back down in increments of one hour for the first six hours, after that increments
are 6 hours.
PRESS the [+] button to scroll back up.
Note: Replacing the battery will not erase this information.
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