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SET THE CLOCK

The Nashbar Tempo Wireless is equipped 

with a digital clock that displays time of day in 

a 12 or 24 hour format.

STEP 1:  

Press the MODE button to advance 

to the Clock display screen (CLK). Hold the red 

SET button for 4 seconds to enter set-up mode.

STEP 2:

  “12” or “24” will flash at the top of the 

screen. Press the SET button to select 12 or 24 

hour mode. Press the MODE button to confirm 

your selection and advance to the hours setting.

STEP 3:  

The hours will flash. Press the SET 

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 MODE button to advance to the 

minutes setting.

STEP 4:

  The minutes will flash. Press the 

SET button (or press and hold) to advance 

the minutes. Press the MODE button to 

advance to the seconds setting.

STEP 5:

  The seconds will flash. Press the 

SET button to reset the seconds to “00”. Hold 

the MODE button to exit set-up mode.

SELECT SPEED SCALE

The Nashbar Tempo Wireless is capable of 

displaying speed and distance information in 

miles or kilometers.

STEP 1:

  Press the MODE button to advance 

to the Total Odometer display screen (ODO). 

Hold the SET button for 4 seconds to enter 

set-up mode.

STEP 2:

  “M/H” or “KM/H” will flash in the 

display screen. Press the SET button to select 

miles (M/H) or kilometers (KM/H).

STEP 3:

  Press the MODE button to advance 

to the wheel size programming screen.

PROGRAM WHEEL SIZE     AND 

ODOMETER (ODO1)

STEP 1: 

 After the speed scale has been 

selected (see above), the computer will 

automatically advance to the wheel size 

programming screen. “     ” or “     ” will flash at 

the top of the screen.

STEP 2: 

 Press the SET button to select 

wheel size     . Press the MODE button to 

advance to the wheel size setting.

STEP 3:

  The left-most digit will flash. Press 

the SET button to adjust the value according 

to the wheel circumference determined above 

(see “Determine Wheel Size”). Then press 

the MODE button to advance to the next 

flashing digit.

STEP 4:

  Repeat this sequence until the 

correct wheel size has been entered. Then 

press the MODE button to advance to the 

odometer programming screen for wheel 

size       (ODO1). (If you don’t wish to program 

the odometer, press the MODE button 5 times 

to advance to the temperature scale selection 

screen, or hold the MODE button to exit set-up.)

STEP 5:

  The left-most digit of the odometer 

value will flash. Press the SET button to 

adjust the value. Then press the MODE 

button to advance to the next flashing digit.

STEP 6:

  Repeat this sequence until the 

odometer value for wheel size      has been 

set. Then press the MODE button to advance 

to the temperature scale selection screen, or 

hold the MODE button to exit set-up.

INTRODUCTION

Thank you for purchasing a Nashbar

 cycle 

computer. With all the features that a professional 

rider needs to keep track of a ride, the Nashbar 

Tempo Wireless is the perfect accessory for any 

cyclist. The convenience of coded wireless 

transmission makes installation simple and 

virtually eliminates interference issues.

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 Nashbar 

Tempo Wireless uses a 3V CR2032 button 

cell battery (available at most drug stores or 

electronic shops) in both the computer and 

the transmitter.

NOTE:

  Most problems that occur with cycle 

computers are caused by weak or dead 

batteries. Should you need to replace the 

batteries, follow the steps below.

COMPUTER HEAD

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 

battery is replaced.

STEP 1:

  Remove the 

battery cover from the 

underside of the computer 

using a coin (Fig. 1). 

Remove the old battery 

and dispose of it properly.

STEP 2:

  Install a fresh 

battery with the positive  

(+) side facing the battery cover.

STEP 3:

  Install the battery cover securely, 

making sure the rubber O-ring seal around 

the battery compartment is still  in place and 

seated properly.

TRANSMITTER

STEP 1:  

Remove the 

battery cover from the 

back of the transmitter 

using a coin (Fig. 2). 

Remove the old battery 

and dispose of it properly.

STEP 2:

  Install a fresh battery with the 

positive (+) side facing the battery cover.

STEP 3:

  Install the battery cover securely, 

making sure that the rubber O-ring seal 

around the battery compartment is still in 

place and seated properly.

COMPUTER FUNCTIONS

CLOCK (CLK) 

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

AUTOMATIC RIDE TIMER (TM) 

Auto start/stop timer is activated by front 

wheel movement and records actual ride time 

up to 29:59:59.

CURRENT SPEED (M/H or KM/H) 

Displays current speed, up to 62.4 M/H (99.9 

KM/H). Accurate to 0.1 M/H or KM/H. Always 

displayed at the top of the screen.

AVERAGE SPEED (AVS) 

Calculates average speed based on ride time 

(TM) & trip distance (DST).

MAXIMUM SPEED (MXS) 

Displays highest speed attained during a ride (or 

since last reset), up to 62.4 M/H (99.9 KM/H).

SPEED COMPARISON INDICATOR (  or  ) 

Compares current speed to average speed. 

As you ride, a ( ) or ( ) will appear next to the 

current speed display to indicate whether your 

current speed is above ( ) or below ( ) your 

average speed. This function is automatic, 

requires no programming and cannot be 

disabled.

16 x 1.75

20 x 1.75

24 x 1.75

1077

1515

1890

26 x 1.0

26 x 1.95

26 x 1.5

1953

2026
2051

26 x 1.75

26 x 2

1

/

8

26 x 2.0

26 x 1.9

2070
2089
2114
2133

TIRE SIZE

CIRCUMFERENCE

27 x 1

1

/

4

28 x 1.5

2161

2224

700 x 18c

700 x 25c

700 x 23c

2102
2096

2105

700 x 28c

700 x 38c

700 x 35c

700 x 32c

2136

2155
2168

2180

TIRE SIZE

CIRCUMFERENCE

1x

Distance in mm / inch

1mm-2mm

MAGNET

WASHER

NUT

SPOKE

SET

MODE

TRIP DISTANCE (DST) 

Displays distance traveled during current 

ride (or since last reset), up to 624.99 miles 

(999.99 kilometers).

ODOMETER (ODO 1) 

Displays cumulative ride distance, up to 

62,499 miles (99,999 kilometers) for wheel 

size     .

ODOMETER (ODO 2) 

Displays cumulative ride distance, up to 

62,499 miles (99,999 kilometers) for wheel 

size     .

TOTAL ODOMETER (ODO) 

Displays total cumulative ride distance for 

both wheel sizes combined, up to 62,499 

miles (99,999 kilometers).

DUAL WHEEL SIZE SETTINGS      or     

Wheel circumference is used to calculate 

speed and distance. The Nashbar Tempo 

Wireless computer includes two wheel size 

settings (     and     ), to keep track of ride data 

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

your road bike and mountain bike).

TEMPERATURE 

Displays air temperature in °F or °C, from 

32°F to 122°F.

AUTO SLEEP 

To prolong battery life, the Nashbar Tempo 

Wireless automatically enters “sleep” mode 

after 30 minutes of inactivity. In sleep mode, 

only the time of day will be displayed. To 

activate the computer when it’s in sleep 

mode, simply press the MODE button.

DETERMINE WHEEL SIZE

The Nashbar Tempo Wireless uses wheel 

circumference (measured in millimeters) 

to calculate speed and distance. Before 

programming the computer, 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.

PROGRAM THE COMPUTER

Before using your Nashbar Tempo Wireless, 

you must set the clock, select a speed scale 

(miles or kilometers), program wheel size, 

set the odometers (if desired), select a 

temperature scale (°F or °C) and program 

gender and weight.

16 x 1.75

20 x 1.75

24 x 1.75

1077

1515

1890

26 x 1.0

26 x 1.95

26 x 1.5

1953

2026
2051

26 x 1.75

26 x 2

1

/

8

26 x 2.0

26 x 1.9

2070
2089
2114
2133

TIRE SIZE

CIRCUMFERENCE

27 x 1

1

/

4

28 x 1.5

2161

2224

700 x 18c

700 x 25c

700 x 23c

2102
2096

2105

700 x 28c

700 x 38c

700 x 35c

700 x 32c

2136

2155
2168

2180

TIRE SIZE

CIRCUMFERENCE

1x

Distance in mm / inch

1mm-2mm

MAGNET

WASHER

NUT

SPOKE

SET

MODE

16 x 1.75

20 x 1.75

24 x 1.75

1077

1515

1890

26 x 1.0

26 x 1.95

26 x 1.5

1953

2026
2051

26 x 1.75

26 x 2

1

/

8

26 x 2.0

26 x 1.9

2070
2089
2114
2133

TIRE SIZE

CIRCUMFERENCE

27 x 1

1

/

4

28 x 1.5

2161

2224

700 x 18c

700 x 25c

700 x 23c

2102
2096

2105

700 x 28c

700 x 38c

700 x 35c

700 x 32c

2136

2155
2168

2180

TIRE SIZE

CIRCUMFERENCE

1x

Distance in mm / inch

1mm-2mm

MAGNET

WASHER

NUT

SPOKE

SET

MODE

16 x 1.75

20 x 1.75

24 x 1.75

1077

1515

1890

26 x 1.0

26 x 1.95

26 x 1.5

1953

2026
2051

26 x 1.75

26 x 2

1

/

8

26 x 2.0

26 x 1.9

2070
2089
2114
2133

TIRE SIZE

CIRCUMFERENCE

27 x 1

1

/

4

28 x 1.5

2161

2224

700 x 18c

700 x 25c

700 x 23c

2102
2096

2105

700 x 28c

700 x 38c

700 x 35c

700 x 32c

2136

2155
2168

2180

TIRE SIZE

CIRCUMFERENCE

1x

Distance in mm / inch

1mm-2mm

MAGNET

WASHER

NUT

SPOKE

SET

MODE

Tempo

|

Wireless

 CompuTer

Fig 1

16 x 1.75

20 x 1.75

24 x 1.75

1077

1515

1890

26 x 1.0

26 x 1.95

26 x 1.5

1953

2026
2051

26 x 1.75

26 x 2

1

/

8

26 x 2.0

26 x 1.9

2070
2089
2114
2133

TIRE SIZE

CIRCUMFERENCE

27 x 1

1

/

4

28 x 1.5

2161

2224

700 x 18c

700 x 25c

700 x 23c

2102
2096

2105

700 x 28c

700 x 38c

700 x 35c

700 x 32c

2136

2155
2168

2180

TIRE SIZE

CIRCUMFERENCE

1x

Distance in mm / inch

1mm-2mm

MAGNET

WASHER

NUT

SPOKE

SET

MODE

Fig 2

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):  

(Fig. 3).

Step 1:

  Stand your bicycle upright. With 

your tires inflated to their normal riding 

pressure, rotate the front wheel so the valve 

stem is located at the 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 stem 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.

Fig 3

Fig 4

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