CatEye AT-110 User Manual

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ALTIMETER

AT-110

マルチスポーツアルティメータ

ALTIMETRE MULTISPORT

MULTI-SPORT-HÖHENMESSER

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MULTISPORTS ALTIMETER

MODEL AT-110

Instruction Manual

INTRODUCTION

Thank you for purchasing CATEYE Model AT-110.
This altimeter is designed to help quantify altitude
data for vertical sports such as, skiing, hiking, climbing, mountaineering, hang-gliding,
parasailing, ballooning, sail-planing and sky-surfing, etc. The patented temperature
compensated pressure captures atmospheric pressure and gives accurate altitude read­ing in 1 meter or 5 foot resolution. Three types of measuring mode (Hike, Ski and Fly)
allow for meaningful data collection for each sport. The screen has an EL (electro­luminescent) backlight for night viewing.

Features:

•Displays altitude with 1 meter or 5 feet resolution up to 6000m or +20,000ft.

•Temperature compensated atmospheric pressure sensor.

•Measures atmospheric temperature.

•Audible and visible alarm in the Fly Mode to easily note any ascent or decent.

•Three types of measuring modes designed for the characteristics of different activi­ties; (Hike, Ski and Fly).

•Shows current altitude in the large display with clock time, temperature, stopwatch,
speed of ascend/descend, altitude gain and loss, on the small display.

•Displays LOG-Book data of highest trip altitude, lowest trip altitude, sum of ascends,
sum of descends.

•Preserves LOG-Book data in memory even after replacing battery.

•Displays in feet or meters, fahrenheit or celsius.

•EL (electro-luminescent) back-lit screen for viewing data at night.

•Audible beep with each button operation.

Before operating, thoroughly familiarize yourself with this manual so that you under­stand the functions completely. Please keep this manual, along with the warranty card,
for future reference.

INDEX

FOR SAFE OPERATIONS (IMPORTANT) ------------------------------ 2
NAMES --------------------------------------------------------------------------- 2
PREPARATIONS

1. Battery Installation ------------------------------------------------------ 3

2. Data Scale Set Up ------------------------------------------------------ 3

3. Time Set Up -------------------------------------------------------------- 3

4. Attaching Wrist Band---------------------------------------------------3

5. Attaching to Your Body ------------------------------------------------ 3

HOW TO USE AS AN ALTIMETER

1. Functions and Button Operations ----------------------------------- 4

2. Hike Mode ---------------------------------------------------------------- 6

3. Ski Mode ------------------------------------------------------------------8

4. Fly Mode ---------------------------------------------------------------- 10

5. Altitude Correction ---------------------------------------------------- 12
BASIC KNOWLEDGE OF ALTITUDE MEASURING --------------- 12
TROUBLESHOOTING ------------------------------------------------------ 13
DAILY CARE ------------------------------------------------------------------ 13
SPARE ACCESSORIES --------------------------------------------------- 13
SPECIFICATIONS ----------------------------------------------------------- 14
LIMITED WARRANTY ------------------------------------------------------ 14

1

FOR SAFE OPERATIONS (IMPORTANT)

For safe and appropriate use, always observe the following.

Caution:

• This altimeter is not intended to be a definitive measuring device.

• Give due consideration to your surroundings. Don’t pay too much atten­tion to the data on the screen when using.

• Safely dispose of old batteries. Don’t place within reach of children. If swal­lowed, consult a physician immediately.

Note:

• Please note that atmospheric pressure is effected by the weather. The AT-110 cal­culates altitude from the changes in atmospheric pressure. Even during stable weather
condition, the altitude reading may change as much as 40m or 130ft, over the course
of the day.

• Select the best-suited mode for your activity.

• Never disassemble the main unit. It can not be re-assembled.

• The main unit is loaded with highly sensitive components. A strong impact may result
in malfunctions.

• Never intentionally submerge the main unit under water. Although the main unit is
water-resistant to normal weather conditions it is not designed to be used underwater.

• Don’t leave the main unit exposed to direct sunlight for extended periods of time.

• If the main unit is heated by strong direct sunlight, the temperature sensor inside of
the main unit may give incorrect temperature readings.

• The atmospheric pressure is continually changing. Thus, the data of the current alti­tude of one location might fluctuate from day to day depending on the weather.

• The Current altitude should be calibrated (corrected) before each use.

• Sudden temperature change such as moving from inside a heated building to a cold
outside can cause temporary incorrect altitude data.

• Static electricity might cause incorrect data.

• In pressurized aircraft the unit will not give a correct altitude.

• If the sensor cover is clogged with mud or sand, it will not measure accurately. Clean
according to “Daily Care” instructions.

• If the main unit or accessories/attachments become dirty with mud etc., gently wash
with mild soap and wipe dry with a soft cloth. Never apply paint thinner, benzine or
alcohol; damage will result.

4 2 5

NAMES

B

E

A

C

F

D

G

H

A Display

53 61

1 Large Display
2 Small Display
3 Icon of Ascend
4 Icon of Descend
5 Icon of Scales/Function
6 Icon of Mode

2

AC

I

B S/S Button
C Mode Button
D Light Button
E Set Button
F AC (All Clear) Button
G Battery Cover
H Sensor Cover/Filter
I Wrist Band (Accessory)

Close

Open

CR2032

B
E D

PREPARATIONS

1. Battery Installation

1. Remove the battery cover on the back, with a coin.

2. Insert a new lithium battery (CR2032) with the (+) pole outward,
as illustrated. Close the cover securely.

3. Press the

* Battery Life: approx. 4 months (average use of one hour per day;

varies depending on frequency of use)

F

Note: If the display disappears while press of the

or often shows irregular altitude, replace the battery.
Caution: Dispose of old batteries properly. Keep batteries out of
reach of children. If swallowed, consult a physician immediately.

AC (All Clear) button on the back.

Light button,

C

Temp. simbol

Hours

Ring

Twist

Buckle

3-2

Alt. simbol

2

3-1

Minutes

Press

Ring

Belt loop

4

2. Data Scale Set Up

First, press the AC (All Clear) button; the entire display will illumi­nate and then “m” and “°C” symbols appear. Press the S/S button
to chose between “°C” (celsius) and “°F” (fahrenheit). Press the

Mode button to chose between “m (meter)” and “ft (feet)”. Select

the desired scale and press the Set button to fix the scale.

Note: If “°C” (celsius) scale is selected a 24-hour clock is dis­played. If “°F” (fahrenheit) is selected a 12-hour clock is displayed.

3. Time Set Up

After the data scale is set, the display displays clock set up mode.
With each press of the S/S button, the digits for hours increase by
one. (To increase rapidly, hold down the button.) Press the
button to select the minute digits. Adjust the minutes by pressing the

S/S button. Press the Set button to set the time. After the clock

time is set, the AT-110 defaults to Hike mode.

4. Attaching Wrist Band

Press the main unit onto the ring of the wrist band. It can be mounted
perpendicularly or parallel to the belt. To remove the unit, twist it to
the left or the right.

5. Attaching to Your Body

By using a longer mounting belt (option), the unit can also be at­tached on your leg, not only on your arm.

1. Adjust the belt length tentatively, according to the part to put the
unit on. (Make it a bit longer than it looks necessary.)

1

2. Roll the belt around the part to wear the unit, and hook the buckle
on the ring with the buckle lever lifted.

3. Pull the belt end to tighten, and lay down the buckle lever.

4. Pass the belt end through the belt loop.

5. To remove the unit, lift the buckle lever and detach the buckle
from the ring.
Note: Lift the buckle lever, when the buckle is attached to/de­tached from the ring.

Mode

3

E

Temperature

Stopwatch

Ascend/Descend
Speed

Altitude
Gain & Loss

Ascend

Descend

Hold down

LOG-BOOK FUNCTION

Sum of Descends

Sum of Ascends

Lowest Trip Alt.

Highest Trip Alt.

B

Button

MAIN
SCREEN

Current Altirude
Clock Time

C

Button

Temperature

B

C

HOW TO USE AS AN ALTIMETER

1. Functions and Button Operations

Before Operation:

The initial value of the Current altitude shown on the display may
not indicate the correct altitude of your location. First read through
this section, and then correct the altitude according to the instruc­tions on page12.

Modes

This unit has three modes; Hike, Ski and Fly. Each mode has its own
characteristics. Select the best-suited mode for your purpose. You
can change the mode during use.
Hike Mode: Suitable for hiking, mountaineering, or other general

activities with gradual changes in altitude.

Ski Mode: Suitable for skiing, snow-boarding, mountain biking, or

other activities where you want to record numbers of
runs.

Fly Mode: Suitable for hang-gliding, paragliding, parajumping,

skysurfing, ballooning, sail-planing or other sky-sports
where there are sudden and significant changes in alti­tude.

ⓦ How to Shift From One Mode to Another

Hold down the Set button and the mode shifts from Hike to Ski to
Fly.

E

E E

HIKE SKI FLY

Functions

Each of the three modes has a Main Screen, Sub Functions and LOG­Book Functions.

ⓦ Main Screen:

The Main Screen gives the basic data of current altitude and time of
day. It is necessary to be in this Main Screen in order to shift between
Sub Functions and LOG-Book Functions.

ⓦ Sub Function:

This function shows current data and conditions, such as tempera­ture, stopwatch, etc. The data appears on the lower display. This
data is accessed by pressing the
data it is being displayed. On the large display, current altitude is
always viewed. To return to the Main Screen, press the
ton in any Sub Function.

HIKE MODE SKI MODE FLY MODE

Current Altitude

Clock Time and Icon

Mode button. The icon tells what

S/S but-

Stopwatch

Asc./Dsc. Speed

Alt. Gain & Loss

SUB FUNCTION

ⓦ LOG-Book Function:

This function shows data stored in memory, such as highest trip alti­tude, sum of ascends, etc. The data appears on the large display,
and the name of the LOG-Book data is indicated on the small display.

4

B

E

C

B

C

E D

F

AC

B
E

C

To cycle from one LOG-Book data to another, press the S/S button.
To return to the Main screen, press the

Highest Trip Altitude Lowest Trip Altitude Sum of Ascends Sum of Descends

* The illustration shows an example of Hike mode.

Using the Stopwatch

In the stopwatch Sub Function the Set button, the stopwatch starts/
stops. To reset it to zero, refer to the following reset operation (press the

S/S button and Mode button simultaneously). When the stopwatch

is active, the stopwatch icon blinks.

Mode button in any time.

Resetting Data

Display the data function you want to reset. Then press the S/S button

Mode button simultaneously. The data resets to zero. If the stop-

and
watch is still active (running), when it is reset, the stopwatch continues
counting after returning to 00:00:00.
Note: If this operation is done in the Main screen, the corrected figure of
the current altitude is reset. (Refer to page 12 - "Altitude Correction".)
Note: If you are resetting the data of highest trip altitude or lowest trip
altitude, firstly the screen shows the largest figure of its range; and then
the reset data becomes the same value as the current altitude.

Light Button

Pressing the Light button will illuminate the EL (electro- luminescent)
back-lit screen for approx. 2 seconds.

Set Button

This button is used: • to shift from one mode to another

• to start/stop the stopwatch

• to calibrate (correct) the current altitude, or to fix

the scale/clock time.

AC (All Clear) Button (on the back)

This button is used to set up the programming of the main unit after hav­ing replaced the battery, or when irregular display occurs during use.
When this button is pressed, all displays illuminate and then only the
scale symbols appears. The scale and clock time must be set again ac­cording to “PREPARATIONS”.

Preserving LOG-Book Data

The LOG-Book data stored in memory in each mode will not be lost even
after the
served in EE-PROM memory. LOG-Book data is cleared when the
S button and the Mode button are pressed simultaneously and only
then is the displayed LOG data reset. EE-PROM calculates the data from
when the clock time of your unit passes 0:00 every day.

AC (All Clear) button is pressed, because the data is pre-

Power Saving Function

If no buttons are pressed for five minutes, the power saving function auto­matically starts. To release this function, press either

Set buttons for more than 1 second. If the unit perceives an altitude
change of more than 4 meters or 10 feet, the power saving function is
turned off.

• In the power saving function:

data of altitude and temperature are still updated every 2 minutes.

• In the standard waking mode:

data of altitude is updated every second and temperature is updated

every 20 seconds.

S/S, Mode or

5

S/

HIKE

MAIN SCREEN

Current Altitude

Clock Time

B

B

Sum of
Descends

B

Sum of
Ascends

B

Lowest
Trip Altitude

B

Highest
Trip Altitude

B

CORRECTION

E

ALTITUDE

C

C

OF

ACTUAL

E D

C

How to Shift to
Another Mode

Hold down

How to Reset the Data

In the Sub/LOG-book Functions

Press
Simultaneously

Shortcut Key

To return to the Main Screen
from the LOG-Book Function,
press
to the Main Screen from the Sub
Function, press

E

B

C

Mode button. To return

S/S button.

Temperature

C

START

E

STOP

Stopwatch

C

Ascend/
Descend
Speed

C

C

Altitude
Gain & Loss

B

/

SUB FUNCTION LOG-BOOK FUNCTION

6

2. Hike Mode

This mode is designed for general activities, such as hiking, mountaineering, cross country, etc.
Its Sub Function and LOG-Book Function is illustrated as follows:

Characteristics of Hike Mode

• Suitable for general activities, such as hiking, etc.

• Desirable for slow change of altitude.

Data

Main Screen

Current altitude: Indicates the current altitude (above sea level) of the present spot on

Clock Time: Shows the present time on the small display. If the temperature scale

Sub Function (Always displays the current altitude on the large display)

Temperature: Measures the atmospheric temperature every 20 seconds and dis-

Stopwatch: Shows the elapsed time from its start to the current point. It is dis-

Ascend/Descend Speed: Indicates the averaged speed of ascend/descend, in the scale of meter

Altitude Gain & Loss: Indicates the altitude difference between the start and the current

LOG-Book Function

Highest Trip Altitude: Indicates the highest altitude ever made since the start to the current

Lowest Trip Altitude: Indicates the lowest altitude ever made since the start to the current

Sum of Ascends: Indicates the total of ascends (altitude gain) on the large display. The

Sum of Descends: Indicates th e to tal of descends (altitude loss) on the large display.

the large display, in 1 meter or 5 foot increments.

is set as “°C” (celsius), the clock reads as a 24-hour clock; if the scale
is set as “°F” (fahrenheit), the clock becomes 12-hour clock.

plays it on the small display, in 1 degree increment.

played in units of minutes and seconds up to ten minutes; and in units
of hours and minutes when it exceeds ten minutes. If the AT-110
clock is set as a 24 hour clock, the stopwatch continues to count up to
24 hours. If the clock-time is set as a 12-hour clock, the stopwatch
continues to count up to 12 hours.

or feet per second, on the small display in increments of 0.1meter per
second or 0.3 feet per second.

point, on the small display. The figure on the display shows the 1/10
value, so the symbol of “x10” appears.

point, on the large display “Ahi” on the small display stands for “Alti­tude High”.

point, on the large display. “ALo” on the small display stands for “Alti­tude Low”.

data of descend (altitude loss) is not included. The figure on the dis­play shows the 1/10 value, so the symbol of “x10” appears. “ASC” on
the small display stands for “Altitude Sum Count”.

The data of ascends (altitude gain) is not included. The figure on the
display shows the 1/10 value, so the symbol of “x10” appears. “dSC”
on the small display stands for “Descent Sum Count”.

7

B

Sum of
Runs

B

Sum of
Descends

B

SKI

MAIN SCREEN

Current Altitude

Clock Time

B

E D

C

How to Shift to
Another Mode

Hold down

How to Reset the Data

In the Sub/LOG-book Functions

Press
Simultaneously

Shortcut Key

To return to the Main Screen
from the LOG-Book Function,
press
to the Main Screen from the Sub
Function, press

E

B

C

Mode button. To return

S/S button.

Lowest
Trip Altitude

B

Highest
Trip Altitude

B

CORRECTION

E

ALTITUDE

C

Temperature

C

START

E

STOP

Stopwatch

C

Ascend/
Descend
Speed

C

C

Altitude
Gain & Loss

C

OF

ACTUAL

B

/

SUB FUNCTION LOG-BOOK FUNCTION

8

3. Ski Mode

This mode is designed for the sport activities, such as skiing, snow-boarding, etc. The special
feature of this mode is that it counts the number of runs or “sum of runs”. The Sub Function and
LOG-Book Function of this mode is illustrated as follows:

Characteristics of Ski Mode

• Suitable for sports that repeat (ascends and descends) runs.

• Desirable for slow change of altitude.

Data

Main Screen

Current altitude: Indicates the current altitude (above sea level) of the present spot on

Clock Time: Shows the present time on the small display. If the temperature scale

Sub Function (Always displays the current altitude on the large display)

Temperature: Measures the atmospheric temperature every 20 seconds and dis-

Stopwatch: Shows the elapsed time from its start to the current point. It is dis-

Ascend/Descend Speed: Indicates the averaged speed of ascend/descend, in the scale of meter

Altitude Gain & Loss: Indicates the altitude difference between the start and the current

LOG-Book Function

Highest Trip Altitude: Indicates the highest altitude ever made since the start to the current

Lowest Trip Altitude: Indicates the lowest altitude ever made since the start to the current

Sum of Descends: Indicates th e to tal of descends (altitude loss) on the large display.

Sum of Runs: Calculates the number of runs, judging from the altitude change, and

the large display, in 1 meter or 5 foot increments.

is set as “°C” (celsius), the clock reads as a 24-hour clock; if the scale
is set as “°F” (fahrenheit), the clock becomes 12-hour clock.

plays it on the small display, in 1 degree increment.

played in units of minutes and seconds up to ten minutes; and in units
of hours and minutes when it exceeds ten minutes. If the AT-110
clock is set as a 24 hour clock, the stopwatch continues to count up to
24 hours. If the clock-time is set as a 12-hour clock, the stopwatch
continues to count up to 12 hours.

or feet per second, on the small display in increments of 0.1meter per
second or 0.3 feet per second.

point, on the small display. The figure on the display shows the 1/10
value, so the symbol of “x10” appears.

point, on the large display. “Ahi” on the small display stands for “Alti­tude High”.

point, on the large display. “ALo” on the small display stands for “Alti­tude Low”.

The data of ascends (altitude gain) is not included. The figure on the
display shows the 1/10 value, so the symbol of “x10” appears. “dSC”
on the small display stands for “Descent Sum Count”.

shows it on the large display. “run” on the small display stands for
“Number of Runs”. The AT-110 counts a “run” when a descent of
more than 10 meters’ or 30 feet altitude difference is recorded within
20 seconds. Then next run is counted, only when descend is done
again after ascend of more than 10 meters’ or 30 feet altitude differ­ence is made within 20 seconds (such as when going up with lift).
Thus, a “run” might not be calculated if the ascent is on foot, or slope
is gentle.

9

B

Sum of
Descends

B

Sum of
Ascends

B

FLY

MAIN SCREEN

Current Altitude

Clock Time

B

E D

C

How to Shift to
Another Mode

Hold down

How to Reset the Data

In the Sub/LOG-book Functions

Press
Simultaneously

Shortcut Key

To return to the Main Screen
from the LOG-Book Function,
press
to the Main Screen from the Sub
Function, press

E

B

C

Mode button. To return

S/S button.

Lowest
Trip Altitude

B

Highest
Trip Altitude

B

CORRECTION

E

ALTITUDE

C

Temperature

C

START

E

STOP

Stopwatch

C

Vario

C

C

Altitude
Gain & Loss

C

OF

ACTUAL

B

/

SUB FUNCTION LOG-BOOK FUNCTION

10

4. Fly Mode

This mode is designed for the sports in the air, such as hang-gliding, para-gliding, sky-diving, etc.
The special feature of this mode, Vario, quickly finds up-wind channels (ascending currents). Its
Sub Function and LOG-Book Function is illustrated as follows:

Characteristics of Fly Mode

• Audible beeps in the Main Screen/Sub Functions allow you to ascent or descent without
looking at screen.

• In the Main Screen/Sub Functions, the icon of ascent/descent is always on so that altitude
change is easily noticeable.

• Desirable for sudden and sharp change of altitude.

Alarms (in the Main Screen/Sub Function)

& beeper : when ascending at a speed faster than +0.25m/s or +0.82f/s

Data

Main Screen

Current altitude: Displays the current altitude of the present location on the large display, in

Clock Time: Shows the present time on the small display. If the temperature scale is set

Sub Function (Always displays the Current altitude on the large display)

Temperature: Measures the atmospheric temperature every 20 seconds and displays it

Stopwatch: Shows the elapsed time from its start to the current point. It is displayed in

Vario: Shows the vertical ascend/descend speed, in the scale of meter or feet per

Altitude Gain & Loss: Indicates the altitude difference between the start and the current point, on

LOG-Book Function

Highest Trip Altitude: Indicates the highest altitude attained since the start to the current point,

Lowest Trip Altitude: Indicates the lowest altitude ever made since the start to the current point,

Sum of Ascends: Indicates the total of ascents (altitude gain) on the large display. The data

Sum of Descends: Indicates the total of descents (altitude loss) on the large display. The data

: when descending at a speed of faster than -0.25m/s or 0.82f/s
: when ascending/descending within the speed of ±0.25m/s or 0.82f/s

1 meter or 5 foot increments. The icon of ascend or descend always ap­pears on the display. If there is no change of the altitude, both icons ap­pear.

as “°C” (celsius), the clock reads as a 24-hour clock; if the scale is set as
“°F” (fahrenheit), the clock becomes 12-hour clock.

on the small display, in 1 degree increment.

units of minutes and seconds up to ten minutes; and in units of hours and
minutes when it exceeds ten minutes. If the AT-110 clock is set as a 24 hour
clock, the stopwatch continues to count up to 24 hours. If the clock-time is
set as a 12-hour clock, the stopwatch continues to count up to 12 hours.

second, on the small display. The increment is 0.5m/s or 1.6ft/s and it eas­ily finds the up-wind channels (ascending currents).

the small display. The figure on the display shows the 1/10 value, so the
symbol of “x10” appears.
Note: In the Fly Mode, the icons of ascend/descend signify the different
meaning from other modes; refer to "Alarms" on the previous page.

on the large display. “Ahi” on the small display stands for “Altitude High”.

on the large display. “ALo” on the small display stands for “Altitude Low”.

of descents (altitude loss) is not included. The figure on the display shows
the 1/10 value, so the symbol of “x10” appears. ”ASC” on the small display
stands for “Ascent Sum Count”.

of ascents (altitude gain) is not included. The figure on the display shows
the 1/10 value, so the symbol of “x10” appears. “dSC” on the small display
stands for “Descent Sum Count”.

11

E

795hPa

899hPa

1013hPa

Pressure

B

C

A. S. Level

5. Altitude Correction

Atmospheric pressure changes constantly, due to various weather con­ditions. As AT-110 calculates the altitude from the atmospheric pres­sure, it is necessary to correct the current altitude in order to get more
precise data. It is recommended to make corrections whenever a reli­able index (such as topographical map or altitude marker is available.
* The basic knowledge of the altitudes of your home, public facilities,

etc. will be useful information for correction.

+

How to Correct the Altitude

B

First, display the Main Screen. Then press the Set button, and the
altitude digits flash. To increase the figure, press the S/S button; to
decrease, press the

C

down the button. Adjust the figure to the correct altitude, and press the

–

Set button to complete this operation.

Mode button. To increase/decrease rapidly, hold

Resetting Standard Atmospheric Scale

After adjusting the altitude to compensate for changes in weather, it may
be helpful to reset the AT-110 to it’s preset standard scale. In the Main
Screen, press the

Mode button and the Set button simultaneously.

This resets the AT-110 to Standard Atmosphere (ISO 2533).

BASIC KNOWLEDGE OF ALTITUDE MEASURING

1. Altitude Measuring of AT-110

The AT-110 contains a highly sensitive atmospheric pressure sensor. It
estimates the altitude by using the “correlation between altitude and pres­sure” based on the Standard Atmosphere (ISO 2533) of ICAO (Interna­tional Civil Aviation Organization). Conventional pressure sensors are
affected by temperature and will therefore give errors. The AT-110 is
temperature-compensated every 20 seconds and records in 1 meter or
5 feet resolution. Also, it offers three types of measuring modes; Hike,
Ski and Fly; to give essential altitude data for various sports.

Note: The current altitude data may give an incorrect value tempo­rarily, such as when it is taken out of doors from inside a building.
These temporary incorrect readings are to be expected and are not a
malfunction. Correct readings will return shortly.

2. The Correlation Between Altitude and Pressure

2000M

The higher the altitude gets, the lower the pressure becomes.
At venues of which altitudes are under 500 meters, the pressure de­creases by approx. 12hPa per each 100 meters.

1000M

A.S.Level Pressure A.S.Level Pressure A.S.Level Pressure

4500 m 577 hPa 1000 m 899 hPa 300 m 978 hPa
4000 m 616 hPa 900 m 910 hPa 200 m 989 hPa
3500 m 658 hPa 800 m 921 hPa 100 m 1001 hPa
3000 m 701 hPa 700 m 932 hPa 0 m 1013 hPa
2500 m 749 hPa 600 m 943 hPa –100 m 1025 hPa

0M

2000 m 795 hPa 500 m 955 hPa –200 m 1038 hPa
1500 m 845 hPa 400 m 966 hPa –300 m 1050 hPa

3. Weather and Atmospheric Pressure

Changes in weather from a high pressure system (clearer, calmer
weather) to a low pressure system (overcast, rain, storming weather)
can cause a change in the altitude reading of 100 meters, 325 feet or
more. Thunderstorms or other strong low pressure weather conditions
may cause even greater change. Even though the weather appears
stable, the pressure may considerably from morning to evening. Even in
seemingly stable weather, the morning to evening change can be as
much as 30 meters or 100 feet.

12

B
E D

C

AC

Sensor cover

Close

Fiter

Open

TROUBLESHOOTING

If a trouble or malfunction occurs, check the following before seeking
technical support.
Trouble/Check Items/Remedy
Buttons do not change the display.

Is the unit in the power saving function?
Press any button for more than 1 second and release this

function.
No display appears. Or the display disappears when the
button is pressed.

Has the battery worn out? Or is it about to wear out?

Replace it with a new one (CR2032). (*After replacing the

battery, be sure to press the

AC (All Clear) button and to

reset the scale and clock time again.)
Incorrect data appears.

F

Static electricity may cause an incorrect readings.

Press the AC (All Clear) button and reset the scale and

clock time again.
The unit does not measure altitude.

Is there anything clogged in the sensor cover?

Clean it off according to "Daily Care". (If the cleaning still

doesn’t work, press the

AC (All Clear) button and reset

the scale and clock time again.)
The current altitude data is incorrect.

Is the correction of the current altitude appropriately done?

The altitude is influenced by the change of the pressure.

Correct it before each use.
The liquid crystal screen is dark and unusual display appears.

Was it left for a long time under direct sunlight?

It returns to normal by being left in the shades. The data will

not be affected.
Display response is slow.

Is it the temperature under 0°C or 32°F?

It returns to normal when the temperature rises. The will not

be affected.

DAILY CARE

If the sensor cover is clogged with mud etc., the unit doesn't measure
altitude. After each use, check the situation of the sensor cover and
take care according to the following instruction.

1. Turn the sensor cover counterclockwise with a screwdriver, and

take it off.

2. Carefully take out the filter inside, and wash the sensor cover and

the filter with clean water.

3. Put the filter back as it was, and close the sensor cover.

Note: The altitude sensor is located under the filter. Be sure not to
insert pins or sharp objects.

SPARE ACCESSORIES

The following parts are available separately.

#166-5150 Lithium Battery (CR2032)
#169-9880 Sensor Cover/Filter
#239-9990/239-9991 Wrist Band / Long Band

Light

#166-5150 #169-9880 #239-9990/239-9991

13

SPECIFICATIONS

Function
Main screen

Current altitude –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Clock Time 0:00'- 11:59' or 23:59' 1'

Sub Function

HIKE MODE SKI MODE FLY MODE

Temperature °C[°F] –5 - 55°C [23 - 131°F] 1°C [1°F]
Stopwatch 00'00" - 9'59"/00:10' - 23:59'[11:59'] 1"/1'
Ascend/Descend Speed /S 0 - ±200m/s [±299ft/s] ±0.1m/s [±0.3ft/s]
Altitude Gain & Loss x 10 0 - ±2999 x10m [ft] ±1 x10m [ft]

LOG-Book Function

Highest Trip Altitude Ahi –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Lowest Trip Altitude ALo –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Sum of Ascends ASC(x10) 0 - 29999 x10m [ft] 1 x10m [ft]
Sum of Descends dSC(x10) 0 - –29999 x10m [ft] –1 x10m [ft]

Main screen

Current altitude –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Clock Time 0:00'- 11:59' or 23:59' 1'

Sub Function

Temperature °C[°F] –5 - 55°C [23 - 131°F] 1°C [1°F]
Stopwatch 00'00" - 9'59"/00:10' - 23:59' [11:59'] 1"/1'
Ascend/Descend Speed /S 0 - ±200m/s [±299ft/s] ±0.1m/s [±0.3ft/s]
Altitude Gain & Loss x 10 0 - ±2999 x10m [ft] ±1 x10m [ft]

LOG-Book Function

Highest Trip Altitude Ahi –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Lowest Trip Altitude ALo –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Sum of Descends dSC(x10) 0 - –29999 x10m [ft] –1 x10m[ft]
Sum of Runs run 0 - 255 1

Main screen

Current altitude –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Clock Time 0:00'- 11:59' or 23:59' 1'

Sub Function

Temperature °C[°F] –5 - 55°C [23 - 131°F] 1°C [1°F]
Stopwatch 00'00" - 9'59"/00:10' - 23:59'[11:59'] 1"/1'
Ascend/Descend Speed /S 0 - ±200m/s [±299ft/s] ±0.5m/s [±1.6ft/s]
Altitude Gain & Loss x 10 0 - ±2999 x10m [ft] ±1 x10m [ft]

LOG-Book Function

Highest Trip Altitude Ahi –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Lowest Trip Altitude ALo –380 - +5870m [–1200 - +19200ft] ±1m [±5ft]
Sum of Ascends ASC(x10) 0 - 29999 x10m [ft] 1 x10m [ft]

Sum of Descends dSC(x10) 0 - –29999 x10m [ft] –1 x10m [ft]
Alarms & beeper when ascending with the speed of more than +0.25m/s
(in the Main Screen/Sub Function)

Controller 4-bit 1-chip microcomputer (crystal controlled oscillator)
Display Liquid crystal (with electro-luminescence backlight)
Operation Sound Piezoelectric buzzer sound
Operating Temperature Range –5 °C - 55 °C [23 °F - 131 °F]
Storage Temperature Range –20 °C - 55 °C [–4 °F - 131 °F]
Power Supply/Service Life Lithium battery (CR2032) x 1 pc./ approx. 4 months (one hour's mea-

Dimension/Weight 56 x 52 x 22.5 mm / 41.5 gram

*The specification and design are subject to change without notice.

suring per day; roughly estimated and varies depending on frequency
of use)

when descending with the speed of more than –0.25m/s
when ascending/descending within the speed of ±0.25m/s

LIMITED WARRANTY

1-Year Warranty: Only Main Unit (excluding battery)

If trouble occurs during normal use specified in this manual, the part is repaired or replaced free of
charge. The service must be performed by CAT EYE Co., Ltd., and the product which needs service must
be returned to CAT EYE Co., Ltd. directly by purchaser. When returning the product for CAT EYE war­ranty service, pack it carefully, and enclose the warranty certificate and instructions for repair. Please
make sure to type your name and address clearly on the warranty certificate, so that the product can be
shipped back to you as soon as the necessary repair/adjustment is completed. Insurance, handling and
transportation charges to our address shall be borne by the person desiring service. Attachments such as
battery, wrist band, are not included in this warranty. This warranty shall only be applied to the product
itself, and CAT EYE is exempted from any responsibility resulting from the use of the product.

Address for service:

Service & Research Address for United States Consumers:

2-8-25 Kuwazu, Higashi Sumiyoshi-ku Osaka 546 JAPAN
Attention: CAT EYE Customer Service Section
Phone: [phone] FAX: [phone]

CAT EYE Service & Research Center

1705 14th St. 115 Boulder, CO 80302
Phone: [phone] Toll Free: 800-5CATEYE
FAX: [phone] e-mail: [e-mail]

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Copyright© 1996
CAT EYE Co., Ltd.
ATM11-960515-2

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2-8-25, Kuwazu, Higashi Sumiyoshi-ku, Osaka 546 Japan

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