Operation Guide 3071 ( B )
Other Altimeter Mode Features
This section explains other features and settings that are available in the
Altimeter Mode. Note that all of the information in this section applies to all
types of Altimeter Mode measurements, unless specifically indicated
Specifying a Reference Altitude
After you specify a reference altitude, the watch adjusts its air-pressure-to-
altitude conversion calculation accordingly. The altitude measurements
produced by this watch are subject to error caused by changes in air
pressure. Because of this, we recommend that you update the reference
altitude whenever one is available during your climb.
To set a reference altitude
1. In the Altimeter Mode, hold down E for about
two seconds until either OFF or the current
reference altitude value starts to flash. This is
the setting screen.
2. Press A (+) or C (–) to change the current
reference altitude value by 5 meters (or 20 feet).
• You can set the reference altitude within the
range of –10,000 to 10,000 meters (–32,800
to 32,800 feet).
• Pressing A and C at the same time returns to OFF (no reference
altitude), so the watch performs air pressure to altitude conversions
based on preset data only.
3. Press E to exit the setting screen.
The altitude graph shows Altimeter Mode
• The vertical axis of the graph represents
altitude, and each dot stands for 10 meters (40
• The horizontal axis represents time, and the flashing dot in the rightmost
column indicates the latest measurement result. For the first three minutes,
each dot represents five seconds. After that, each dot represents two
• An out of range measurement result or a measurement error will cause the
column of dots for that measurement to be blank (skipped).
You also can use the Altimeter Mode to measure the altitude differential
from a specific reference altitude. Specifying the point is as simple as
pressing a single button to reset the current reference altitude value to zero.
Altitude differential measurement is performed each time the watch performs
an altitude measurement.
• You must perform altitude differential measurement whenever you select
format number 3 or 4 as the Altimeter Mode display format.
• The range of the altitude differential value is –3,000 meters (–9,980 feet) to
3,000 meters (9,980 feet).
• "-- -- --" is displayed in place of the altitude differential value whenever the
measured value is outside the allowable range.
• The watch will assume that the reference altitude setting is zero for the first
measurement after you exit the Altimeter Mode setting screen.
• See "Using Altitude Differential While Mountain Climbing or Hiking" for
some real-life examples of how to use this feature.
To reset the altitude differential value to zero
In the Altimeter Mode, press E.
• This will start altitude measurement. The
altitude differential value will show 0 after
measurement is complete.
• You must perform altitude differential
measurement whenever you select format
number 3 or 4 as the Altimeter Mode display
Using Altitude Differential Measurement While Mountain
Climbing or Hiking
After you zero reset the reference altitude value at a particular location while
mountain climbing or hiking, you easily can measure the change in the
altitude between that point and another point.
To use altitude differential measurement
1. In the Altimeter Mode, check to make sure
that the display shows the altitude differential
• If the altitude differential value is not
displayed, use the procedure under "To
select an Altimeter Mode display format" to
select display format 3 or 4.
2. Use the contour lines on your map to
determine the difference in altitude between
your current location and your destination.
3. In the Altimeter Mode, press E to take an
• This causes the altitude differential value to
appear at the top of the display.
4. While monitoring the difference between the
altitude you found on the map and the altitude
differential value displayed by the watch,
advance towards your destination.
• If you determined that the difference between
the map altitude and your current location is
+80 meters, for example, you are approaching
your destination when the displayed altitude
differential value shows +80 meters.
Altitude Data Recall
Use the Data Recall Mode to view altitude periodic records currently in
memory, as well as the current session record and the altitude historical
record. Altitude data records are created and stored in the Altimeter Mode.
The following explains the contents of each of the screens that appear in the
Data Recall Mode.
• While the periodic record, high altitude, or low altitude screen is displayed,
the bottom part of the display alternates between the measurement date
(month and day) and measurement time, at 1-second intervals.
(Hour : Minutes)
Periodic records show only data for the last save session performed with the
watch. There can be up to 40 periodic records in memory.
Current Session Record Contents
The following data items show the contents of the current session record.
Highest altitude reached during the
Lowest altitude reached during the recalled
Total cumulative ascent during the recalled
Total cumulative descent during the
The historical record shows data for all save sessions performed since the
last time the historical record was cleared.
Highest altitude reached during all
Lowest altitude reached during all
Total cumulative ascent during all sessions.
Total cumulative descent during all
To view periodic records and current session record contents
1. Enter the Data Recall Mode.
2. Use A and C to scroll through the data and display the one you want.
( 1 )
( 2 )
( 40 )
• To view the current session record contents, use A to scroll forward
past the last periodic record (which will display the current session
screen), or C to scroll back past the first periodic record
3. After you are finished viewing data, press D to exit the Data Recall Mode.
• Dashes (
) will be displayed if data has been deleted or if there is no
corresponding data due to error, etc. In such cases, total ascent (
and total descent (
) values will show zero.
• When the total ascent (
) or total descent (
meters (or 99,980 feet), the applicable value will restart from zero.
(Month – Day)
) exceeds 99,995