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 Computers 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 USERS UNDERSTANDING OF THE FUNCTIONS AND PROCESSES TO SETUP THOSE FUNCTIONS.
1.2 MAIN FUNCTIONS (MODES)
Though the users guide applies to all the Wristop Computer models, functions and differences in operation of the models are noted in the table below.

Functions

Time Altimeter Barometer Compass
Wristop Computer Models Altimax

YES YES YES -

Vector

YES YES YES YES

X-Lander
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 provide the same features. The difference is the Vector is housed in a sturdy plastic case and the X-Lander is brushed aluminum.

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.

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 units 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.
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 10C (50F) 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 operators responsibility to take due care to ensure that the Wristop Computer remains waterproof.

Note: If the 12 hour clock is chosen either AM/PM will appear below the hour in Field 2.
10. PRESS the [+] button to scroll the year upward or 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.

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.

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. 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.
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.
2.5 DUAL TIME SUB MODE (ALTIMAX)
Note: This feature applies to the Altimax Wristop Computer 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.

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. 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. 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: Activity Skiing Biking Hiking Mountaineering Interval 20 sec or 1 minute 20 sec or 1 minute 10 Minute 10 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.
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.

The third display shows the descent information for the particular logbook that is being viewed (Fig. 18).
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 intervals 20 second 1 minute 10 minute 60 minute Maximum recording time 10 hours 12 hours 7 days 10 days
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 model: 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, 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 model. 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.

After the third display is shown, the Altimax automatically returns 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.
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 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 1O C or F.

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 youve been in the barometric mode for more than 15 minutes with no rate of vertical movement, you should 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 mode (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 users convenience can return to this sub mode to show the current reading.
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.

5.2 DECLINATION ADJUSTMENT SUB MODE
The Wristop Computer allows the user to compensate the difference between true north and magnetic north. This process is accomplished by adjusting the declination, resulting in the user obtaining correct compass readings. In the Compass mode, PRESS the [Select] button once to enter this sub mode. In the Declination Adjustment sub mode (Fig. 33): Field 1 displays the declination direction OFF where OFF = no declination; W = West; E = East. Field 2 displays declination in degrees. Field 3 displays the text dEC.
5.2.1 Setting the Local Declination
1. PRESS the [Select] button and hold in for 2 seconds. Located in Field 1, OFF will begin to flash. 2. PRESS either the [+] or the [-] button to change the declination direction in Field 1. 3. At the direction desired, PRESS the [Select] button to move to the next setting. Located in Field 2, the degrees will begin to flash. 4. PRESS the [+] button to scroll the degrees upward or PRESS the [-] button to scroll the degrees downward. 5. At the degrees desired, PRESS the [Mode] button to accept the changes and 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. Local Declination is now set.
5.3 CALIBRATING THE COMPASS
A compass calibration should be done when the Wristop Computer is subject to close proximity of magnetic sources, extreme cold weather, every time the battery is replaced or suspected that other environmental conditions have effected the compass readings. Note: We also recommend calibrating the compass before using the compass the first time and every time leaving for a hike where the compass will be used. To begin the calibration: 1. PRESS the [Select] button twice when in the main compass mode. Field 1 displays the text CMP. Field 3 displays the text CAL (Fig. 34). 2. PRESS the [Select] button and hold in for 2 seconds. Located in Field 2, the text PUSH will begin to flash (Fig. 35). 3. PRESS the [-] button to start calibration. 4. In Field 2, 360 appears and the Outer Circumference displays all segments lit (Fig. 36). When this occurs, hold the Wristop Computer level and start to slowly turn the device around a full circle in a level position. The
direction of turning does not matter. The lit segments will be turned off as the turning proceeds. When the first full circle is completed, the instrument will inform the user within one minute of whether the calibration was successful displaying the text dOnE in Field 2 (Fig. 37) or if the process needs to be repeated displaying PUSH and - in Field 2. Note: The user may need to perform the rotating of the compass more than twice around for the calibration to be completed. Note: During calibration, it is not necessary that all peripheral segments light up or turn off. Note: If the text FAIL appears in Field 2 (Fig. 38), the battery should be removed and put back in before trying to proceed with the calibration process. The removal of the battery will reset the unit. 5. Once the calibration is successful, PRESS the [Mode] button to accept the process and exit the calibration mode. Note: It is important to hold the Wristop Computer level during the calibration process to ensure accuracy. The compass calibration is complete.

6.2.2 What is the longest time I can set in the timer?
The maximum range of the countdown timer is 23 hours 59 minutes and 59 seconds.

6.3 ALTIMETER

6.3.1 How do you clear the logbook?
The logbook is self-erasing and cannot be cleared by the user.
6.3.2 How does the logbook self-erase?
The logbook is circular and will start erasing itself when all the memory places are filled. There are approx. 3,800 memory places, each of which contain the altitude as well as the ascent/descent rate at that time (according to the chosen interval, 20 seconds, 1 minute, 10 or 60 minutes). When all the memory places are filled, the logbook starts recording new logs on top of the oldest recordings. This is what is meant when we say the logbook is self-erasing. You can clear the history of the logbook; i.e. where you get the cumulative ascent and descent information based on the logs recorded into the logbook.
6.3.3 How many logbooks can you record?
The number of logs you can record into the logbook depends on the chosen interval and the length of each log. For example, if your interval is 1 minute, you can get a total of 3,800 minutes of logs into the logbook. This equals 2.64 days if the recording is continuous (24 hours = 1,440 minutes; 3,800/1,440=2.64).
To avoid excessive battery drain, the recording is not continuous. The recording functions have certain timeouts (i.e. the recording will be turned off automatically after a certain time). The timeouts are shorter for the faster interval and longer for the slower interval.
6.3.4 What is the duration readout?
The duration readout tells you how many hours and/or minutes the event recorded into the logbook lasted. For example, if youre hiking from 1 p.m. to 6 p.m. and the logbook is on during this time, the readout would show a duration of 05:00 hours.
6.3.5 What is the maximum capacity of total vertical ascent or descent feet/meters in the logbook history?
The maximum figure that can be shown on the display is 29,999.999 representing feet or meters depending on the unit of measurement set. This should be enough for most users: 29,999.999 meters is roughly threequarters around the globe.
6.3.6 If hiking from a level of 5,000 ft down hill to 3,000 ft and then back up to 8,000 feet, how is the Vector going to read this or average it out?
There are several answers to this question related to different situations. First, if you mean will Wristop Computer show accurate altitude information when ascending back to 8,000 ft after having descended to 3,000 ft from 5,000 ft, the answer is yes if the barometric pressure hasnt been affected by weather changes. Since the altitude is shown based on the atmospheric pressure reading it will be affected by pressure changes. But if the conditions are the same, and the reference altitude is set, the unit will show quite accurate readings. Second, if what you mean is how the Wristop Computer calculates the information shown in the logbook, this is what it does: for the total ascent during the log (the logbook recording has been activated by the user when starting out) it calculates the ascent from 3,000 ft to 8,000 ft, i.e. total ascent has been 5,000ft. For the descent it calculates the descent from 5,000 ft to 3,000 ft, i.e. total descent 2,000 ft.

Third, if thinking about the difference measurement function and how this is affected by the example situation, the Wristop Computer will show you the absolute difference between 5,000 ft and 8,000 ft (beginning and end). The fact that youve been down to 3,000 ft in-between does not have an impact on the absolute vertical altitude difference between starting point and finish. Last, the automatic 24-hour memory will show this information in the following way: Say you are starting out at 5,000 ft at noon, and then it takes you 2 hours to descend to 3,000 ft, and another five hours to reach 8,000 ft. The scrollable displays in the 24-hour memory shows you the altitude 5,000 ft at 12:00 am, e.g.4,000 ft at 1 p.m., 3,000 ft at 2 p.m., e.g. 4,000 ft 3 p.m., 5,000 ft at 4 p.m., 6,000 ft at 5 p.m., 7,000 ft at 6 p.m. and then 8,000 ft at 7 p.m. These are the different cases in which the example situation will affect the readings of the Wristop Computer. Most important to remember is to ALWAYS set the known reference altitude into the Wristop Computer. This is the only way to get accurate altitude readings.
6.3.7 Why does the vertical ascent/descent measurement show different readings even though I am inside and staying in the same room?
The resolution of the vertical ascent/descent rate is 1 m/1 ft whereas the resolution of the altitude display is 5 m/ 10 ft, which means that the ascent/descent rate can show movement even though you remain at the same altitude. This is caused by changes in pressure or even vertical movement within the 5 m/10 ft resolution range. Indoors, even small, unnoticeable air currents cause changes in air pressure. For example, if you have a window open at the other end of your house, the air current may affect a room at the other end of the building so little that you do not notice it, but the sensors of the Wristop Computer do. Because the Wristop Computer measures ascent and descent based on changes in air pressure, it interprets these changes as vertical movement.

6.4 BAROMETER

6.4.1 What is the little box on the top left of the display?
It is the barometric trend indicator that shows the general direction of weather changes. The display is based on barometer measurements for the last 6 hours.
6.4.2 Does the Wristop Computer show future trends in weather conditions?
No, the Wristop Computer continually accumulates data on barometric pressure existent within a 3 to 6 hour window and displays general barometric trends in weather based on the accumulated data.
6.4.3 What does absolute pressure and relative pressure mean?
Absolute pressure is the actual pressure in any location at any given time. Relative pressure on the other hand equals the corresponding pressure at sea level for a certain altitude that you are at. For example, if you are at an altitude of 1,000 m/3,300 ft the absolute pressure normally is around 900 mbar/26.60 inHg. The relative pressure at sea level would then be around 1,013 mbar/29.90 inHg.