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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.
