Manual Ascent Delta Cycling Computer

Manual

Delta Wireless

INTRODUCTION

Thank you for your purchase of an Ascent™ cycle

computer. With all the features that a professional rider

needs to keep track of a ride, the Ascent Delta Wireless

is the perfect accessory for any cyclist. The added

convenience of wireless transmission makes

installation simple!

BATTERY INSTALLATION

To help you get started quickly, the computer and

transmitter batteries have been installed at the factory.

Under normal use the batteries should last one to two

years. The Delta Wireless uses a 3V CR2032 button

cell battery (available at most drug stores or electronic

shops) in both the computer and the sensor/transmitter.

NOTE: Most problems that occur with cyclocomputers

are caused by dead or weak batteries.

Should you need to replace the batteries, follow the

steps below.

COMPUTER HEAD

1. NOTE: During a battery change, all data will be cleared

from memory. Make a note of your current wheel size

settings and cumulative odometer mileage before

replacing the battery so you can reprogram these

values once the new battery is installed (see “Program

Wheel Size” and “Program the Odometer”).

2. Remove the battery cover from the underside of the

computer using a coin. See Figure 1. Remove the old

battery and dispose of properly.

3. Install a fresh battery with the positive (+) side facing

the battery cover.

4. Reinstall the battery cover securely, making sure the

rubber O-ring is still in place and does not get pinched

or distorted.

5. If for some reason the screen is blank or shows an

irregular display after a battery change, depress the

CLEAR button on the underside of the computer head.

See Figure 7.

SENSOR/TRANSMITTER

1. Remove the battery cover from the back of the

transmitter using a coin. See Figure 1. Remove the old

battery and dispose of properly.

2. Install a fresh battery with the positive (+) side facing

the battery cover.

3. Reinstall the battery cover securely, making sure that

the rubber O-ring is still in place and does not get

pinched or distorted.

COMPUTER FUNCTIONS

The Ascent Delta Wireless offers the following functions,

which can be accessed by pressing the LEFT button.

Fig 1

CURRENT SPEED (M/H or K/H)

Displays current speed, up to 100 M/H or K/H. Accurate

to 0.1M/H or K/H. Always displayed at the top of the

screen.

AVERAGE SPEED (AVG)

Calculates average speed based on ride time (ATM) & trip

distance (DST).

MAXIMUM SPEED (MAX)

Displays highest speed attained during a ride (or since

last reset), up to 100 M/H or K/H.

SPEED COMPARISON (5or 6)

Compares current speed to average speed. As you ride, a

(5) or (6) will appear next to current speed to indicate

whether your current speed is above (5) or below (6)

your average speed. This function is automatic, requires

no programming and cannot be disabled.

CLOCK (CLK)

Displays time of day in a 12 hour or 24 hour format.

AUTOMATIC RIDE TIMER (ATM)

Auto start/stop timer is activated by front wheel

movement and records actual ride time up to 24:00:00.

TRIP DISTANCE (DST)

Displays distance traveled during current ride (or since

last reset), up to 9999.9 miles or kilometers.

ODOMETER (ODO)

Displays cumulative ride distance, up to 99,999.9 miles

or kilometers.

DUAL WHEEL SIZE SETTINGS (1) or (2)

Wheel circumference is used to calculate speed and

distance. The Delta Wireless includes two wheel size

settings (

1 and 2 ), which allow you to use the computer

on two bikes with different wheel sizes (e.g. your road

bike and mountain bike).

AUTO SLEEP

To prolong battery life, the Delta Wireless will

automatically enter “sleep” mode after 5 minutes of non-

use. In sleep mode, only the time of day will be displayed.

The computer will automatically exit sleep mode as soon

as any button is pressed.

DETERMINE WHEEL SIZE

The Delta Wireless uses wheel circumference (measured

in millimeters) to calculate speed and distance. Before

you can program the computer you must calculate wheel

circumference using one of the three methods below.

1. Select size from chart (least accurate): Use the chart

below to find the circumference for your tire size. The

chart lists the programming sizes for some of the most

popular tire sizes currently in use. These numbers

are estimations which may not precisely match the

circumference of your wheel, due to variations in tire

size between brands and models.

2. Measure wheel diameter (more accurate): Measure

your wheel diameter (including wheel and tire) in

millimeters (1 inch = 25.4mm) and multiply by 3.1416.

This value is your wheel circumference.

3. Perform roll-out test (most accurate): See Figure 2.

STEP 1: Stand your bicycle upright. With your tires

inflated to the proper pressure, rotate your front wheel so

that the valve is located at the bottom (6 o’clock position).

Make a mark on the ground to indicate the valve location.

STEP 2: Roll the bicycle forward in a straight line for one

complete wheel revolution, until the valve is again at the

bottom (ideally, you should be on the bike). Make a mark

on the ground to indicate the valve location.

STEP 3: Measure the distance between the marks in

millimeters (1 inch = 25.4mm). This value is your wheel

circumference.

PROGRAM THE COMPUTER

Before using your Delta Wireless, you must program

wheel size (see “Determine Wheel Size,” above), select

a speed scale (miles or kilometers), set the odometer

(if desired), and set the clock. The first step is to set the

clock. To enter the set-up mode, depress the SET button

on the underside of the computer. See Figure 7.

SET THE CLOCK

The Delta Wireless is equipped with a digital clock that

displays time of day in a 12 hour or 24 hour format.

STEP 1: Using the tip of a pen, depress the SET button

on the underside of the computer to enter the Clock set-

up screen.

STEP 2: “12” or “24” will flash in the lower line of the

display. Press the RIGHT button to select 12 hour or

24 hour mode. Press the LEFT button to confirm your

selection and advance to the hours setting.

STEP 3: The hours will flash. Press the RIGHT button (or

press and hold) to advance the hours. If you selected 12

hour mode, “PM” will appear for hours between noon

and midnight. Press the LEFT button to advance to the

minutes setting.

STEP 4: The minutes will flash. Press the RIGHT button

(or press and hold) to advance the minutes. Press the

LEFT button to set the time and advance to the speed

scale selection screen.

SELECT SPEED SCALE

The Delta Wireless is capable of displaying speed and

distance information in either miles or kilometers.

STEP 1: After setting the clock, the computer will

automatically advance to the speed scale selection screen.

“M/H” or “K/H” will flash in the display screen. Press the

RIGHT button to select miles (M/H) or kilometers (K/H).

STEP 2: Press the LEFT button to confirm your selection

and advance to the wheel size setting screen.

PROGRAM WHEEL SIZE

STEP 1: After the speed scale has been selected, the

computer will automatically advance to the first wheel

size programming screen (b1). The left-most digit will

flash. Press the RIGHT button to adjust the flashing digit

according to the wheel circumference value determined

above. Press the LEFT button to advance to the next

flashing digit.

16 x 1.75

20 x 1.75

26 x 0.75

24 x 1.75

24 x 1

1272

1590

1948

1907

1954

26 x 1.0

26 x 1.6

26 x 1.5

26 x 1

1973

2105

2026

2051

26 x 1.75

26 x 2

26 x 2

26 x 1.9

2070

2089

2114

2133

TIRE SIZE

CIRCUMFERENCE

1

/

8

3

/

8

3

/

8

27 x 1

28 x 1.5

28 x 1

28 x 1

28 x 1.75

2199

2224

2268

2265

2205

700 x 18c

700 x 25c

700 x 23c

700 x 20c

2102

2114

2133

2146

700 x 28c

700 x 40c

700 x 37c

700 x 32c

2149

2174

2205

2224

TIRE SIZE

CIRCUMFERENCE

3

/

8

1

/

2

1

/

4

1x

Distance in mm / inch

Fig 2

08_Ascent_DeltaWireless_INS.indd1 1 7/15/08 4:10:36 PM

Rating

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