Avocet ALTIMETER 50 Manual - Page 4

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CLIMB OR DESCENT

Left button selects whether altitude

gain or loss will be recorded

3. Climb or Descent.

pointing upward indicates climb will be accumulated.

To accumulate altitude lost on descents, press the left

button to make the arrow point downward. Return to the

climb option by pressing the left button again. Press the

right button to go to cadence on/off.

4. Cadence On/Off.

RPM shows. If the optional

cadence kit is installed, press the left button to activate

the cadence option in the speed function. "CAd" on the

ALTITUDE ADJUSTMENT

Left button increases altitude when arrow points up

and decreases it when arrow points down

Altitude Adjustment.

Altimeter 50 uses a barometer to measure atmospheric

pressure. Altimeters are shipped from the factory

precalibrated, and will show approximate altitude

without adjustment. However, weather changes can

affect readings by as much as 200 feet or 68 meters

during the passage of storms.

For accurate altitude information, adjust at a known

How the Altimeter 50 Works.

50 measures altitude by detecting differences in air

pressure and displaying this information as altitude above

sea level. For example, air pressure is 25% less at 7,000

feet than at sea level. The Avocet Altimeter 50 works the

same way an aircraft altimeter does.

Adjusting the Altimeter 50 for Air Pressure

Changes.

Atmospheric pressure is relatively stable ex-

cept during major weather changes. On a typical day,

minor atmospheric pressure changes may cause the

displayed altitude to change by 50 feet. When a weather

front arrives or departs, altitude can change 50 to 150 feet

over a day or two. During severe storms, changes over

150 feet can occur.

The Altimeter 50 can be adjusted to account for

atmospheric pressure changes caused by the weather.

Adjustment is made by changing the altitude reading until

it matches your current altitude. If you learn the altitude of

your home, and adjust before you start your ride, the

S E T U P S E Q U E N C E

CADENCE ON/OFF

RPM

Left button activates and deactivates

the cadence option

"A" shows and a arrow

A L T I T U D E A D J U S T M E N T

The altitude function of the

A B O U T T H E A L T I M E T E R

The Avocet Altimeter

altitude readings will match the altitude of landmarks

along your route. Adjusting altitude is described in the

section "Altitude Adjustment".

the upper numbers. Accumulated altitude change is dis-

played by the lower numbers, You can choose whether

you will accumulate altitude gained (climb) or lost (de-

scent) in the setup sequence. If you switch between climb

and descent, the two will be added together. There are two

accumulated altitude displays: resettable trip change

(called TRIP CLIMB) and total change (called TOTAL

CLIMB). Adjusting the altitude does not affect accumu-

lated change, either trip or total.

wheel is turning, otherwise updates are every 10 seconds.

If the Altimeter 50 is used off the bicycle, you can get 1

second updates by pressing either button. An hour after

pressing a button the unit returns to 10 second updates.

Accumulated altitude changes will not be added when the

CLOCK SET

Left button first advances hours,

then minutes

display indicates that cadence is activated. If cadence

is activated without the kit, no reading will appear in

the cadence option of the speed function. Press right

button to go to clock set.

5. Clock Set.

The default of 12:00 shows and the

hour digits flash. Press left button to advance hours. At

the correct hour, press the right button. The minute

digits flash. Press or hold the left button to advance

minutes. Press the right button to complete setup.

altitude before riding. Determine altitude of your home

from a topographic map, a local weather service, or a

library. Mountain passes are a good place to adjust

because their altitudes usually appear on maps and on

road signs. The altitude shown on a city limit sign is of

the town's city hall, not the sign.

To adjust,

go to the altitude function and hold the

right button down for more than 2 seconds. Only

altitude and an arrow will show. The arrow points

alternately upward and downward. If the altitude is too

high, subtract in 10 foot (4 meter) increments by

pressing the left button when the arrow points down.

Add to it when the arrow points up. Pressing the right

button returns to the altitude function.

Measuring Altitude off the Bicycle.

power the Altimeter "goes to sleep" when it is off the

bicycle.When measuring altitude on hikes or in a car,

press either button to "wake up" the Altimeter and

elimintate delays in displaying new altitudes. It remains

awake for one hour after a button is pressed.

The Altitude Display.

Current altitude is displayed in

The altitude display is updated every second while the

To conserve