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Trek Sensor Cycling Computer
Owners Manual
Congratulations and thank you for purchasing the Trek Sensor Cycling
Computer. Before operating please read this instruction manual carefully and
retain it for future reference. We recommend setting the speed scale and
wheel circumference before installing the computer.
Precautions
Remember to watch the road or trail while riding. Watching your bicycle
computer makes it difficult to see upcoming obstacles. Awareness of potential
road, trail or traffic problems should be your main concern.
Main Unit/Accessories
1
2
3
4
5
6
7
8
Contents:
1. Main Unit
2. Bracket
3. Wire
4. Wheel Sensor
5. Magnet
6. Wire Securing Tape
7. Zip Tie
8. Bracket Rubber Pad
alone will remain flashing on the screen as in fig. 3. To
make choice please insert computer head into main
bracket. Bring Magnet in contact with tip of wheel
sensor. (fig. 5) Screen will flash between KM and Mi.
When desired choice is on screen pull magnet away
from wheel sensor to lock choice and move on to next
step. (See fig. 4)
If incorrect data appears on the screen, please reinstall battery again.
4. Setting the wheel circumference (100mm2999mm)
2155 is displayed and the last 5 is flashing. To change
this number hold the magnet to the tip of the sensor (fig. 5) and scroll
through numbers. When the desired number is
present pull the magnet away. Do this
procedure until all four numbers are set. The display
will then enter the auto-scan mode.
Installation
When you have completed your preparation, please
follow the steps below to install. In order to install smoothly, please take off
the computer from the bracket temporarily.
1. Place bracket and bracket rubber pad on handlebar.
2. Place two zip ties through bracket.
3. Position bracket in desired location and remove extra zip tie.
4. With computer in bracket, adjust to the right position.
Table 1. Setting values reference table
Preparation - Must be completed before operation
1. Measure the wheel circumference before setup refer
to fig. 1 (25.4 mm equals 1 inch) or Table 1 to get the
wheel circumference in millimeters. Confirm and note
this number in the manual for later use here:
_______________
2. Installing/Replacing the battery.
Remove the battery cover by using a narrow flat blade or similar opener
as illustrated in fig. 2. Insert a new battery (3v) CR2032, position the (+)
pole upward as illustrated. Place the battery properly into the case and
close the cover securely. After the battery is installed speed scale and
wheel size can be set.
3. Setting Speed Scale Choose KM for Kilometers or Miles.
After the battery is installed all displays will be illuminated, then “KM”
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Wheel/Tire Size Wheel size Setting Wheel/Tire Size Wheel size Setting
16” 1300 700 X 20C 2074
20” X 1.75” 1600 700 X 23C 2085
24” X 1.95” 1920 700 X 25C 2100
26” X 1” 1950 700 X 28C 2135
650 X 20C 1945 700 X 32C 2155
650 X 23C 1990 700 X 35C 2175
26” X 1.5” 2030 700 X 38C 2180
26” X 1.9” 2055 700 X 40C 2190
26” X 2.0” 2074 700 X 1-1/4” 2160
26” X 2.2” 2100
Measure the distance which
is your circumference
First
Point
Second
Point
fig 2
fig 3fig 4
fig 5
Odometer (total distance)
(0.0-9999 kms or 6213 miles)-ODO
The total distance is continuously measured, accumulated and
displayed until next reset or the battery is changed. When 9999
kms or 6213 miles is reached the odometer returns to zero and
counting begins anew.
Trip Distance
(0.0-999.9 kms)-DIS
The trip distance from start to current point is displayed. Trip
distance will start calculating if signal is received, and stop
calculating when signal stops.
Auto Start/Stop
All functions - Current Speed(S), Odometer(ODO) and Trip Distance(DIS) will
automatically start and stop when signal is received or stopped.
Auto Scan
All the functions (ODO, DIS) will automatically scan and each display mode will
last 3 seconds. This function will continue until battery change/reset.
Auto Power Saving
When unit has not been used for 10 minutes (no signal received for ten
minutes continuously), the display will disappear and power will be
automatically saved. Start pedaling to release power saving mode and display
all functions automatically (auto scan).
Auto Clear data
When unit has not been used for 6 hours (not receiving and input signal for 6
hours continuously), all data stored in memory will be erased (wheel
circumference, odometer and speed scale will be kept). Once you start
pedaling (receiving signals), all data will calculate from zero.
5. Loosen the spoke screw and place spoke in spoke channel.
6. Tighten spoke screw so that it cinches the magnet securely
to the spoke.
7. Place the wheel sensor on the appropriate fork leg.
8. Install the zip tie through wheel sensor and pull tight.
9. Adjust the wheel sensor until it is 3-5mm from the wheel magnet. The
magnet should line up with indent on wheel sensor.
Test
Mount the computer in the bracket. Lift the front wheel off the ground and
spin the wheel checking if current speed is displayed. If not, adjust wheel
magnet and wheel sensor as described in installation steps 9. Refer to the
following steps for the operation of your Sensor computer.
Display Functions
Current Speed (0.0-70 miles or 99
kms)-S
The current speed is displayed on the upper line of the display and updated
every second.
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Spoke
Screw
Spoke
Channel
Speed 0-30km/h 31-60km/h over 60 m/h
Minimal display unit 0.1km/h(mile/h) 0.5km/h(mile/h) 1km/h(mile/h)
SPECIFICATIONS
Controller 4-bit 1-chip Microcomputer
(Crystal Controlled Oscillator)
Display Liquid Crystal Display (LCD)
Sensor No Contact Magnetic Sensor
Power Supply CR2032 x1 (3V)
Operating Temperature Range 0.0 C to 40.0 C (32.0 F to 104.0 F)
Storage Temperature Range -20.0 C to 50.0 C (-40 F to 122.0 F)
Applicable wheel circumference 100mm-2999mm
Battery Life Approx. 1 year
©1999 Trek Bicycle Corporation. All rights reserved.
TROUBLE SHOOTING
The following situations do not indicate malfunction of the computer. Check
the following before taking unit for repair.
Trouble Check Items Remedy
Missed setting for speed
scale or wheel
circumference
The entire liquid crystal
screen is dark and unusual
display is seen.
Display response is slow.
Incorrect data appears.
No Display
Current Speed does not
appear.
Was it left for a long time
under direct sunlight?
Is it at a low temperature
under 32.0F (0.8C)?
Has the battery in the main
unit worn out?
Is there anything on the
contact of the main unit or
on the bracket?
Are the wheel sensor and
magnet too far apart?
Are the marking lines of the
wheel sensor and the center
of the magnet aligned?
Is the wire broken?
Execute “All Clear”
operation Re-install battery.
It returns to normal state by
leaving it in the shade. No
adverse effect on data.
It returns to normal state
when temperature rises.
Re-insert the battery
Replace the battery with a
new one. (3V/DC)
Wipe the contact clean
Refer to “installation fig. 8”
and re-adjust correctly.
Refer to “installation fig. 8”
and re-adjust correctly.
Replace the bracket wire
& wheel sensor with a
new one.
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