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E-56
There are two standard methods of expressing altitude: absolute altitude, which expresses an absolute
height above sea level, and relative altitude, which expresses the difference between the altitudes of two
different places. This watch expresses altitudes as relative altitude.
Height of building 130 m
(relative altitude)
Rooftop at an altitude of
230 m above sea level
(absolute altitude)
Sea Level
Regular calibration of the watch in accordance with values provided by local altitude (elevation) indications
is recommended before taking readings in order to maximize reading accuracy (page E-55).
E-57
Altimeter Precautions
• This watch estimates altitude based on air pressure. This means that altitude readings for the same
location may vary if air pressure changes.
• Do not rely upon this watch for altitude reading or perform button operations while sky diving, hang
gliding, or paragliding, while riding a gyrocopter, glider, or any other aircraft, or while engaging in any
other activity where there is the chance of sudden altitude changes.
• Do not use this watch for measuring altitude in applications that demand professional or industrial level
precision.
• Remember that the air inside of a commercial aircraft is pressurized. Because of this, the readings
produced by this watch will not match the altitude readings announced or indicated by the fl ight crew.
The Effect of Temperature on Altitude Readings
For the more accurate altitude readings, leaving the watch on your wrist is recommended in order to
maintain the watch at a constant temperature.
• When taking altitude readings, keep the watch at as stable a temperature as possible. Changes in
temperature can affect altitude readings.
E-58
Viewing Altitude Records
You can use the Data Recall Mode to view manually saved record data, auto save values, and trek log values.
To view altitude records
1. Use
D
to select the Data Recall Mode (
REC
) as shown on page E-10.
• About one second after REC appears on the display, the display
will change to show the fi rst record of the memory area you were
viewing when you last exited the Data Recall Mode.
2. Use
B
to select the memory area you want.
REC -01-
(Manually Saved
Record Area)
(Auto Save
Value Area)
Total
(Trek Log
Value Area)
Mt.1
• After you select the Trek Log Value Area screen, use the
B
button to select the trek whose values you want to view. Treks are
numbered from 1 (Mt.1) through 14 (Mt.14).
Reading time
(Hour : minute)
Reading date
(month, day)
1 second
Manually Saved
Record Area Screen
Reading time
(Hour : minute)
Reading date
(month, day)
1 second
Manually Saved
Record Area Screen
E-59
3. Use
A
and
C
to scroll through the screens for an area and display the one you want.
REC
-01-
REC
-02-
REC
-30-
Manually saved records
MAX MIN ASC DSC
Auto saved values
AltitudeAltitude
AltitudeAltitude
E-60
MAX MIN ASC DSC
Trek Log Values (Mt.1 to Mt.14)
• Manually saved records (REC01 to REC30), auto save MAX and MIN values, and trek log values
all include the date (month and day) and time (hour and minute) that the data was recorded.
• Records of the ASC and DSC include altitude values along with the date (month, day) and year
that data recording started.
• For details about auto save values, see “Auto Save Values” (page E-51). For details about trek log
values, see “Trek Log Values” (page E-52).
• ---- will be displayed if MAX/MIN data has been deleted or if there is no corresponding MAX/MIN
data due to error, etc. In such cases, total ascent (ASC) and total descent (DSC) values will show
zero.
• When the total ascent (ASC) or total descent (DSC) exceeds
99,999 meters (or 327,997 feet), the applicable value will restart
from zero. Note that the watch can display up to fi ve digits only.
When using feet as the altitude display units, altitude values are
displayed only up to the rightmost fi ve digits.
• When the total ascent (ASC) or total descent (DSC) value
becomes fi ve digits long, the rightmost (ones) digit is shown in the
lower right of the display. The nearby illustration shows the display
when the value of ASC is 99995 meters.
AltitudeAltitude
10,000s
digit
1s digit
10,000s
digit
1s digit
E-61
Trek Log Values (Mt.1 to Mt.14)
High Altitude Value Low Altitude Value
Cumulative Ascent
Value
Cumulative Descent
Value
*1 *2
*1: Month and day the displayed value was recorded.
*2: Month and day cumulation started.
• Holding down
A
or
C
scrolls at high speed.
• On the high altitude value (
MAX
) and low altitude value (
MIN
) screens, the lower display area alternates
between the date (month and day) and time at one-second intervals.
• On the cumulative ascent and cumulative descent screens, the lower display area alternates between
the month and day, and the year at one-second intervals.
E-62
To delete all manually saved data
Memory contents cannot be deleted while trek log values are being recorded.
1. Use
D
to enter the Data Recall Mode.
2. Use
B
to display the Manually Saved Record Area (page E-58).
3. Hold down
E
for at least three seconds. First,
Clear Hold ALL
will fl ash in the display. After that,
Hold
will disappear. Release
E
when
Hold
disappears.
• This will cause - - - - to appear in the lower display.
• This indicates that all manually saved data is cleared.
To delete data in a specifi c memory area
Memory contents cannot be deleted while trek log values are being recorded.
1. Use
D
to enter the Data Recall Mode.
2. Use
B
to display the memory area (Manually Saved Record Area, Auto Save Value Area, or Trek Log
Value Area) that contains the data you want to delete.
3. What you should do next depends on which memory area you displayed in step 2, above.
• If you displayed the Manually Saved Record Area, use
A
and
C
to display the number of the
record (REC-01- through REC-30-) you want to delete.
• If you displayed the Auto Save Value Area, all of its values will be deleted, so you do not need to
select anything.
• If you displayed the Trek Log Value Area, use
B
to display the trek (mountain) number of the
record (Mt.1 through Mt.14) you want to delete.
Important!
• A delete operation cannot be undone! Make sure you do not need data before you delete it.
E-63
4. Hold down
E
for at least two seconds. First,
Clear Hold
will fl ash in the display. After that,
Hold
will
disappear. Release
E
when
Hold
disappears.
• If you are deleting a Manually Saved Record Area record, holding down
E
too long (after Hold
disappears) will cause all manually saved records to be deleted.
• Deleting a record in either the Manually Saved Record Area or Trek Log Value Area will cause all
records following it to be shifted upwards and renumbered accordingly. If the record you delete
is the last one currently in the memory area where you deleted it, - - - - will be displayed in the
display in place of the record number.
• After you delete Auto Save Values, the MAX (high altitude) and MIN (low altitude) values will show
- - - -, while the ASC (cumulative ascent) and DSC (cumulative descent) values will show zero.
Operation Guide 3439