Halfords 151640 User Manual

English, B. a

ALL CLEAR UNIT SELECTION ODO1 SETTING (Bike1)

ODO2 SETTING (Bike2) T-TM SETTING CIRCUMFERENCE SETTING (

Bike1) END SETTING

CLOCK SETTING

BIKE 1, BIKE 2 (CIRCUMFERENCE SETTING )

RESET OPERATION (AVG=0, DST=0, TM=0, MAX=0)

BIKE 1, BIKE 2 SELECTION

1st

2nd

Tire Size

Circumference

Nunber

18 Inch

1436 mm

20x1.75

1564

20 Inch

1596

22 Inch

1759

ATB 24x1.75

1888

24 Inch

1916

24x 13/8

1942

ATB 26x1.40

1995

ATB 26x1.50

2030

ATB 26x1.75

2045

26Inch (650A)

2073

ATB26x2.0(650B)

2099 mm

700C TUBULAR

2117

700x20C

2092

700x25C

2124

700x28C

2136

27 Inch(700x32c)

2155

700x35C

2164

700x38C

2174

27.5 Inch

2193

28 Inch (700B)

2234

28.6 Inch

2281

ODO1 (ODO 2)

T-TM

T-ODO

CLOCK

AVG

DST

MAX

DST/D

English

POPULAR TIRES CIRCUMFERENCE

REFERENCE TABLE

OK!

...

Stop Status Only

Riding Status

INDEX

=KEY NUMBER:

[

•

Mode Button,

„

Set Button,

…

:Bike1/Bike2 Selection Button]

Means press button

than 2 seconds

Means press button

quickly.

1.5V

battery

LR44

BATTERY

CHANGE

WHEEL CIRCUMFERENCE

MAIN UNIT SETUP (Fig.1)

INITIATE THE COMPUTER (ALL CLEAR)

1. A battery is already loaded in the main unit when purchased.
2. Hold down the MODE button

•

and 1/2 button

…

simultaneously for more than 3

seconds to initiate the computer and clear all data.

IMPORTANT: Be sure to initiate the computer before it is be used, otherwise the

computer may run errors.

3. The LCD segments will be tested automatically after the unit is initiated.
4. Press MODE button

•

to stop LCD test, then the flickering "Km/h".

UNIT SELECTION

Press MODE button

•

to choose Km/h or Mile/h. Then press the SET button

„

to store

selection.

ODO1, ODO2 and T-TM DATA SETTING

1. The function is designed to re-key in former data of ODO1, ODO2 and T-TM when battery is

replaced.

2. A new user does not need to set this data. Each press of the SET button

„

skips one

setting data process.

3. Data setting process:

A). The data is adjusted each digit separately. The setting digit is flickering.
B). Quickly press the MODE button

•

to increase the digital value by 1.

C). To change the setting digit by hold down the MODE button

•

for more than 2 seconds.

D). Press the SET button

„

to store the data then change to the next setting or the normal

operation.

WHEEL CIRCUMFERENCE

1. Roll the wheel until the valve stem at its lowest point close to the ground, then mark this first

point on the ground. (Fig. a)

2. Get on the bike and have a helper push you until the valve stem returns to its lowest point.

Mark the second point on the ground. (Sitting on the bike achieves a more accurate reading
since the weight of the rider slightly changes the wheel circumference).

3. Measure the distance between the marks in milimeters. Enter this value to set the wheel

circumference.

Option: Get a suitable circumference value from the table. (Fig. b)

4. Adjust the wheel circumference as the data setting process.
5. Unit will change to the normal operation after this circumference setting.

MEANS PRESS BUTTON N MORE THEN 2 SECONDS.
MEANS PRESS BUTTON N QUICKLY
{N=KEYNUMBER:

•

MODE Button.

„

SET Button.

…

1/2 Button.

}

INDEX:

BATTERY CHANGE (Fig. c)

1. When the brightness of the LCD display is dim, it means that the battery is nearly exhausted.
2. Replace a new LR44 (Cross reference type A76, AG13 or V13GA) battery in the compartment on the back

of the computer with the positive (+) pole toward the battery cap.

PROBLEM

CHECK ITEM

REMEDY

1. Replace the battery.

2. Be sure that the positive pole of the

battery is facing the battery cap.
1. Refer to the adjusting procedure

and complete the adjustment.

2. Wipe contacts clean.

3. Refer to Installarions (Fig.B3~B4) and

readjust data correctly.

4. Repair or replace wire.

5. Refer to "CALIBRATION" and enter

correct value.
Refer to the "MAIN UNIT SETUP" and initiate

the computer again.
Place main unit in the shade to return to

normal state.No adverse effect on data.
Unit will return to normal state when the

temperature rises.

1. Is the battery dead?

2. Is there incorrect battery installation?

1. Is it at the recalibrating or clock setting

screen?

2. Are the contacts between the

main unit and the bracket poor?

3. Are the relative positions and gap

of sensor and magnet correct?

4. Is the wire broken?

5. Is the circumference correct?

Did you leave main unit under direct sunlight

when not riding the bike for a long time?
Is the temperature below 0°C (32°F)?

No display

No current

Speed or

incorrect

data

Irregular

display
LCD is black

Display is slow

TROUBLE SHOOTING

Check the following before taking unit in for repairs.

PRECAUTIONS

1. This computer can be used in the rain but should not be used under water.

2. Don’t leave the main unit exposed to direct sunlight when not riding the bike.

3. Don’t disassemble the main unit or it’s accessories.

4. Check relative position and gap of sensor and magnet periodically.

5. Clean the contacts of the bracket and the bottom of the main unit periodically.

6. Don’t use thinner, alcohol or benzine to clean the main unit or its accessories when they become dirty.

7. Remember to pay attention to the road while riding.

FUNCTIONS

: Current Speed

0.0–199.9Km/h (120.0 Mile/h), 0.1Km/h (Mile/h), +/- 1%

The current speed is always displayed on the upper set when riding. It displays current speed up
to 199.9 Km/h or 120.0 Mile/h (for wheel diameters over 24 inches).

ODO1, ODO2:

Bike1 odometer, Bike2 odometer 0.0–99999.9 Km (Miles), 0.1Km (Mile), +/- 0.1%

1. The odometer cumulates the total distance as long as the bike is running.
2. This computer design has 2 wheel circumference memories to calculate data for 2 bikes. The

odometer is separated for each bike.

3. It displays one ODO data only when the bike is selected in the current status.

T-TM:

Total Riding Time

0H00M-9999H59M, 1 Minute, +/- 0.003%

The T-TM accumulates total riding time while ri

ding t

he bike1 and bike2.

T-ODO:

Total Odometer

0.0–99999.9 Km (Miles), 0.1Km (Mile), +/- 0.1%

The T-ODO is the sum of the ODO1 plus ODO2.

: 12HR or 24HR Clock 1H00M00S–12H59M59S or 0H00M00S–23H59M59S, 1 Second, +/- 0.003%

It can display the current time either in 12HR or 24HR clock.

AVG

: Average Speed

0.0–199.9 Km/h (120.0 Mile/h), 0.1Km/h (Mile/h), +/- 0.1%

1. It is calculated from the DST divided by the TM. The average data counted is from the last

RESET to current point.

2. It will display "0.0" when TM is less than 4 seconds.
3. It is updated about one second when TM is over 4 seconds.
4. It displays an "Err" symbol when either the TM is over 100 hours or the DST is over 1,000 km

(or miles). Reset the unit in order to restart.

DST

: Trip Distance

0.00–999.99 Km (Miles), 0.01Km (Mile), +/- 0.01%

The DST function accumulates the distance data from the last RESET operation as long as the
bike is being ridden.

: Riding Time 0M00.0S-59M59.9S, 0.1 Second, 1H00M00S-99H59M59S, 1 Second, +/- 0.003%

1. The TM totals the riding time from the last RESET operation.
2. It will automatically begin counting upon

ding, and continue to count 2 seconds to confirm that no more wheel sensing signal is sent
when riding is stopped.

But this computer revises back the overcounted 4 seconds automatically.

3. It displays in 0.1 second increments when TM is less than 1 hour and changes to 1 second

increments after 1 hour. It will restart from zero after 100 hours.

MAX

: Maximum Speed

0.0–199.9Km/h (120.0 Mile/h), 0.1Km/h (Mile/h), +/- 1%

It shows the highest speed from the last RESET operation

DST/D

: Distance Today

0.00–999.99Km (Miles), 0.01Km (Mile), +/- 0.01%

The DST/D function accumulates the distance data for one day rode. The data will be cleared at
AM 12:00:00 (0:00:00) automatically.

/ : Speed Pacer

It flashes the " " speed pacer arrow while the current speed is higher than the average speed
and flashes the " " conversely as long as the bike is being ridden.

BUTTON AND OPERATIONS

MODE BUTTON

•

Quickly press this button to move in a loop sequence from one function screen to another. (Fig. 2)

SET BUTTON

„

Press this button to get in or out the setting screens when you want to reset to bike1, bike2
circumference, or the current time of the .

1 / 2 BIKE SELECTION BUTTON

…

1. This computer design has 2 sets of circumference memory to calculate 2 bikes’ data separately.
2. Press 1/2 BIKE SELECTION button to switch between bike1 and bike 2. (Fig. 3)

BIKE1 or BIKE2 WHEEL CIRCUMFERENCE (Cmm) RE-SETTING

1. Press the 1/2 button

…

to select either bike1 or bike 2. (Fig. 4)

2. Press the MODE button

•

to change to the ODO display.

3. Press the SET button

„

enter the circumference setting screen.

4. Adjusting the data as the data setting procedures.

CLOCK SETTING

1. Change the LCD display to screen. (Fig. 5)
2. Press the SET button

„

to enter the clock adjusting screen to setting the clock.

3. A quick press of the MODE button

•

to select 12HR or 24HR.

4. Adjust the clock data as the data setting procedures.

Assuming the current time is 13:17:15, adjusting the clock value as 13:18: --.When the current
time advances to 13:18:00, for instance, press the SET button „ to store the setting value and

synchronize it with the current time. (The undisplayed Second value is restarted at 0).

RESET OPERATION

1. Hold down the MODE button

•

till the LCD digit is blanked, then release it. The computer will

reset AVG, DST, TM and MAX data from stored values to zero. (Fig. 6)

2. It cannot reset ODO, T-TM, T-ODO, , DST/D.

AUTOMATIC START/STOP

1. The computer will automatically begin counting data upon riding and stop counting data

when riding is stopped.

2. The flickering symbol " " indicates that the computer is at start status.

POWER AUTO ON/OFF

To preserve battery, this computer will automatically switch off and just displays the " " data when
it has not been used for about 4 minutes. The power will be turned on automatically by riding the
bike or by pressing the button.

LOW BATTERY INDICATOR

1. The symbol " " will appear to indicate the battery is nearly exhausted.
2. Replace battery with a new one within a few days after the symbol was appeared, otherwise the

stored data may be lost when the battery voltage is too low.

English

4403000000_20090423_v1

SEGMENTS

LCD

AUTO TEST

Sensor: No Contact Magnetic Sensor.

Battery Type: 1.5V Battery X 1.(Typical No. LR44 / A76 / AG13 / V13GA.)

Battery Operating Life: About 2 years. (The original factory-attached battery may be shorter

than this period due to shipping and storage time.)

Dimensions/Weight: 44.5 x 50.0 x 18mm / 25g

Wheel Circumference Setting: 1mm - 3999mm (1mm increment)

Operation Temperature: 0°C ~ 50°C (32°F ~ 122°F)

Storage Temperature: -10°C ~ 60°C (14°F ~ 140°F)

LCD

Display

MODE

SET

1/2

151640 Halfords 12 Function Computer