E-56
• The altitude tendency graph shows changes in altitude over the past 6 readings while readings are
being taken automatically.
50 meters
(10 meters for
each block )
6 readings
ago
Current
reading
Using Reference Altitude Values
To minimize the chance of reading error, you should update the reference altitude value before setting off
on a trek or any other activity where you plan to take altitude readings. During a trek, keep checking the
readings produced by the watch against altitude information provided by markers and other information,
and update the reference altitude value as required.
• Reading error can be caused by changes in barometric pressure, atmospheric conditions, and
elevation.
• Before performing the procedure below, look up the altitude of your current location on a map, the
Internet, etc.
E-57
To specify a reference altitude value
1. In the Altimeter Mode, pull out the crown.
• Thi
digital display
• The t
o’clock
2. Rotate the crown to change the altitude value in one-meter (fi
increments.
• Y
this setting.
• Cha
that y
• Y
32,800 feet
• Pressing
A
and
C
at the sOFF (
per
3. After the setting is the way you want, push the crown back in to exit the setting screen.
E-58
Advanced Altimeter Mode Operations
Use the information in this section to obtain more accurate altimeter readings, especially while mountain
climbing or trekking.
Using an Altitude Differential Value
If you specify a reference altitude, the second hand of the watch will
indicate the difference between the current altitude and the reference
altitude. The displayed altitude differential value is updated each time the
watch obtains a new altitude reading value.
• Depending on the currently selected display range, the allowable
range for the altitude differential value is 100 meters to –100 meters
(100 meters = 328 feet), or 1,000 meters to –1,000 meters (1,000
meters = 3,280 feet).
• If a reading value is outside the allowable range either (
OVER
) or
(
UNDER
) appears on the digital display.
• The second hand will move to 9 o’clock if a sensor reading could not
be taken for some reason or if the reading is outside the allowable
range.
• See “Using the Altitude Differential Value While Mountain Climbing or
Hiking” (page E-59) for some real-life examples of how to use this
feature.
Altitude differential
E-59
Specifying the Altitude Differential Measurement Range
You can use the procedure below to select either ±100 meters or ±1,000
meters as the altitude differential measurement range.
Relative Altitude Measurement Range Display Unit
±100 meters (±328 feet) 5 meters (16 feet)
±1000 meters (±3280 feet) 50 meters (164 feet)
To specify the altitude differential measurement range
1. In the Altimeter Mode, pull out the crown.
• Thi
• The t
o’clock
2. Press
B
twice.
• This will causeDIFF to appe
fl
3. Rotate the crown to select either 100 meters (
100m
) or 1,000 meters
(
1000m
) as the altitude differential measurement range.
4. After the setting is the way you want, push the crown back in to exit the
setting screen.
Using the Altitude Differential Value While Mountain Climbing or Hiking
After you specify the altitude differential start point while mountain climbing or hiking, you can easily
measure the change in the altitude between that point and other points along the way.
Altitude differential
E-60
To use the altitude differential value
1. In the Altimeter Mode, check to make sure that an altitude reading is
on the display.
• If an al
A
to take o
take a
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, hold down
D
for at least two seconds to specify
your current location as the altitude differential start point.
• DIFF R and then RESE will appe
alti
dif
dif
4. While comparing the altitude difference you determined on the map
and the watch’s altitude differential value, advance towards your
destination.
• If th
loc
you wi
dif
Current
location
Destination
altitude
Current
location
Destination
altitude
Altitude Differential (Reference
location, so ±0 m is indicated.)
Current altitude
Altitude Differential (Reference
location, so ±0 m is indicated.)
Current altitude
E-61
The altitude differential with the reference location is indicated by the second hand (altitude differential
indicator) as shown in the illustration below.
Unit: 50m (164ft)
Unit: Meters
Unit: 5m (16ft)
−500m (−1640ft)
−50m (−164ft)
−100m (−328ft)
−1000m (−3280ft)
1000m (3280ft)
500m (1640ft)
100m (328ft)
Example:
Altitude
differential of
−30 (300)
meters
Indication range:
±100 (1000) meters
50m (164ft)
00
E-62
•
When
±100m
is selected for the altitude differential measurement range, the
(over) indicator
appears any time the differential is greater than +100 meters (+328 feet). The (under) indicator
appears any time the differential is greater than −100 meters (−328 feet). If either of these indicators
appears, change the range setting to
±1000m
.
•
When
±1000m
is selected for the altitude differential measurement range, the
(over) indicator
appears any time the differential is greater than +1000 meters (+3280 feet). The (under) indicator
appears any time the differential is greater than −1000 meters (−3280 feet).
• The second hand will move to 9 o’clock if a reading is outside the altimeter measurement range (−700
to +10,000 meters (–2,300 to 32,800 feet)), or if a reading error occurs.
Types of Altitude Data
Your watch can record two types of altitude data in its memory: manually saved data and auto save
values.
• Use the Data Recall Mode to view data stored in memory. See “Viewing Altitude Records” (page E-83)
for details.
E-63
Manually Saved Records
Any time you perform the procedure below in the Altimeter Mode, the watch will create and store a record
with the currently displayed altitude reading, along with the date and time the reading was taken. There is
enough memory to store up to 30 manually saved records, which are numbered from
-01-
through
-30-
.
To save a reading manually
1. In the Altimeter Mode, check to make sure that an altitude reading is
on the display.
• If an al
A
to take o
take a
2. Hold down
A
until
REC
fl
• Thi
saved re
• The wa
after the save operation is co
• The
If th
above o
auto
Operation Guide 5365
