CatEye CC-RD420DW User Manual
CC-RD420DW ENG
CATEYE STRADA
1
DIGITAL WIRELESS
CYCLOCOMPUTER
CC-RD420DW
Before using the computer, please thoroughly read
this manual and keep it for future reference.
Please visit our website, where detailed instruc-
tions with movies are available and the instruction
manual can be downloaded.
The sensor ID was synchronized with this unit before shipment. It is not necessary to synchronize the sensor ID.
* In combination with the optional speed sensor (ISC-10), this
unit is capable of receiving and displaying up to 3 signals of the
current speed, cadence, and heart rate.
Warning / Caution
• Pace maker users should never use this device.
• Do not concentrate on the computer while riding. Ride safely!
• Install the magnet, sensor, and bracket securely. Check these peri-
odically.
• If a child swallows a battery, consult a doctor immediately.
• Do not leave the computer in direct sunlight for a long period of
time.
• Do not disassemble the computer.
• Do not drop the computer to avoid malfunction or damage.
• When using the computer installed on the bracket, change the
MODE by pressing on the three dots below the screen. Pressing
hard on other areas can result in malfunction or damage to the
computer.
• Be sure to tighten the dial of the FlexTight™ bracket by hand. Tightening it strongly using a tool, etc. may damage the screw thread.
• Stop using the unit if you have skin irritation with the HR strap or
electrode pad.
• Do not twist or pull strongly the HR strap.
• The HR strap may deteriorate due to long-term use. Replace the HR
strap if it has frequent measurement errors.
• When cleaning the computer, bracket and sensor, do not use thinners, benzene, or alcohol.
• Dispose of used batteries according to local regulations.
• LCD screen may be distorted when viewed through polarized sun-
glass lenses.
2.4GHz digital wireless system
Each sensor adopts the 2.4GHz digital wireless technology, which is
used for wireless LAN, etc. This technology practically eliminates interference from any external noise and cross-talk with other wireless
computer users during measurement, and enables it to record and
store highly reliable data. However, it suffers interference in the following places and/or environments, which may result in an incorrect
measurement.
* Careful attention is required especially while checking the sensor
ID.
• TV, PC, radios, motors/engines, or in cars and trains.
• Railroad crossings and near railway tracks, around television trans-
mitting stations and radar bases.
• Other wireless computers or digitally controlled lights.
• In the Wi-Fi environment
.
Automatic recognition of the speed sensor ID
The speed sensor has its own ID, and the computer measures in synchronization with the ID.
Two speed-sensor IDs can be registered to one computer, which can
automatically identify two speed sensors once their IDs are registered
in advance.
As a tire circumference is set to the speed sensor ID, wheel selection
by manual operation is no longer required, which was necessary with
conventional units.
* The speed sensor currently recognized is indicated with a sensor
icon ( or ) on the screen.
Procedure of automatic recognition
When the computer changes to the power saving screen, and then returns to the measurement screen, automatic recognition of the speed
sensor ID is performed in the following procedure.
The computer searches the speed sensor ID signal, which had
1
been synchronized immediately before.
Once the sensor signal is received, the sensor icon for the speed
2
sensor lights up, and the computer starts the measurement.
When the speed sensor ID signal which had been synchronized immediately before, cannot be received another sensor signal is searched.
When the computer receives another sensor signal, the sensor icon for
3
the other sensor lights up on the screen, and starts the measurement.
When another speed sensor ID signal cannot be received, the
original sensor signal is searched again.
The computer repeats synchronization through the procedure described
above even if it fails in synchronization for some reason, such as communication failure; in such cases however, it takes time for recognition.
* When the computer does not receive any signal from the sensor for
10 minutes, it will change to the power-saving screen. When such a
condition lasts another 1 hour, it will get into the sleep state.
Switching the ID by manual operation
The speed sensor ID can be forced to change manually, according to
the menu screen “Setting the tire circumference”. Use this operation
in the following cases.
• When the computer cannot recognize the intended sensor signal,
since the 2 registered speed sensors are nearby and both are sending a sensor signal.
• When you want to switch the speed sensor ID immediately.
* Once you switch the speed sensor ID by manual operation, the com-
puter continues to search only the speed sensor ID you switched
when returning to the measurement screen. When the computer
cannot receive any sensor signal in 10 minutes, the power-saving
mode is activated, and the computer changes to the power saving
screen. The computer searches through the procedure of automatic
recognition when it returns to the measurement screen.
How to install the unit on your bicycle
CC-RD420DW ENG
2
2
Bracket
band
Bracket
1
Dial
Bracket rubber
pad
Attach the bracket to the stem or handlebar
1
The FlexTight™ bracket can be attached to either the stem or the handlebar, depending on how the bracket fits into the bracket band.
Caution: Be sure to tighten the dial of the FlexTight™ bracket by hand.
When attaching the FlexTight™ bracket to the stem :
When attaching the FlexTight™ bracket to the handlebar :
* To mount the bracket to an aero-shaped handlebar or larger stem, use the optional nylon ties
Tightening it strongly using a tool, etc. may damage the screw thread.
Bracket band
Bracket
Bracket band
Bracket
bracket.
Bracket rubber pad
Bracket rubber pad
Stem
Handlebar
Dial
Cut
Caution:
Round off the cut
edge of the bracket
band to prevent
injury.
Remove/Install
the computer
Click
While supporting it by hand,
Push it out as if lifting
the front up
Speed sensor
(SPD-10)
Install the speed sensor to the front fork or
2
Sensor rubber
pad
Nylon ties
(x 2)
Magnet
chain stay
* The speed sensor can be used either installed to the front fork
or chain stay.
When installing to
the front fork:
When installing to
the chain stay:
Install the sensor and
magnet
Magnet
Spoke
Magnet
To the SENSOR ZONE
* The magnet may be installed any-
where on the spoke if the above
installation conditions are satisfied.
Speed sensor
Magnet
The magnet
passes through
the sensor
zone.
SENSOR ZONE
Speed
sensor
SENSOR ZONE
Magnet
Sensor
rubber pad
Speed
sensor
Speed sensor
3 mm
Pull
securely
The clearance
between the sensor and magnet is
3 mm or less.
Cut
Nylon ties
Heart rate sensor
CC-RD420DW ENG
3
Before wearing the heart rate sensor
Warning: Pace maker users should never use this device.
• Stop using the unit if you have skin irritation with the HR strap or electrode pad.
• Do not twist or pull strongly the HR strap.
• The HR strap may deteriorate due to long-term use. Replace the HR strap
if it has frequent measurement errors.
Heart rate
sensor
HR strap
Wearing the heart rate sensor
* Adjust the HR strap length to fit your chest size (underbust). Fastening the strap too tightly may cause discomfort.
* Ensure that the electrode pad is in direct contact with the body.
* Wearing the heart rate sensor when your skin is dry or on top of your undershirt may produce measurement errors. To avoid errors, moisten the
electrode pad.
* The heart rate sensor consumes power when worn. Remove the heart rate sensor whenever measurement is not performed.
Heart rate sensor
HR strap
Push it in until it clicks.
Hook
Back
Electrode pad
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