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Cateye V3 - User Manual

Cateye V3
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ENG-1
ENG
Introduction
Thank you for purchasing the CATEYE V3.
The V3 is a high-performance computer for riders who wish to train extensively and
analyze their data.
2.4GHz-frequency digital wireless technology, which is the same technology used for
wireless LAN, is used for both the speed/cadence integrated speed sensor and the heart
rate sensor. This technology practically eliminates interference from external noise and
cross-talk with other wireless computer users, providing you with stress-free riding.
Read this instruction manual thoroughly and understand the functions of the computer
before using it.
Keep it in a safe place for future reference.
About the manuals
Basic installation and operation
Please go here for installation of the unit on the bicycle, use of the heart rate measure-
ment function, preparing the computer, and the basic operation of the product.
1. How to install the unit on your bicycle ............... See page 6-8
2. Heart rate sensor ............................................... See page 9
3. Preparing the computer ..................................... See page 10-15
4. Basic operation of the computer ........................ See page 16-17
Measurement screen
Please go here to learn how to operate the computer functions.
Measurement screen .......................................... See page 18-22
Ride data review
Please go here to check and manage recorded data.
File view ............................................................. See page 24-27
Changing computer configuration
Please go here for changing and checking each menu items.
Changing the computer configuration ................ See page 23-34
Advanced use
Recording lap and split time data ....................... See page 20 “Lap function”
Training with target heart rate zones .................. See page 37
“Use of the target zone”
Important
Always follow the sections that are marked with “ Warning!!!”.
No part of this manual may be reproduced or transmitted without the prior written
permission of CatEye Co., Ltd.
The contents and illustrations in this manual are subject to change without notice.
If you have any questions or concerns about this manual, please contact CatEye at
www.cateye.com.

Table of Contents

Other manuals for Cateye V3

Questions and Answers

  • K
    Kristen StewartAug 19, 2025
    Why in menu mode, cannot change settings on Cateye V3 Bicycle Accessories?
    • G
      Greg FoxAug 19, 2025
      Only the top menu can be viewed during measurement on Cateye Bicycle Accessories. To change the target zone and measurement unit, stop the measurement and perform the resetting operation.
  • S
    Shannon BaldwinAug 21, 2025
    How to fix Cateye V3 when heart rate signals are not received?
    • M
      Michelle CamachoAug 21, 2025
      If your Cateye Bicycle Accessories aren't registering your heart rate, there are several things to try. First, ensure the speed sensor ID is correctly set for the heart rate sensor. If the heart rate sensor icon is off, press the M1/+ or M2/- button to activate it. Pressing any button can also cancel the power-saving mode. Make sure the electrode pad's rubber surface has good contact with your body, moisten the pad slightly, or try replacing the battery (CR2032). If none of these steps work, you may need to replace the heart rate sensor.
  • A
    Anna HaasAug 23, 2025
    Why my Cateye V3 Bicycle Accessories cannot measure the trip speed (cadence)?
    • J
      James CrawfordAug 23, 2025
      If your Cateye Bicycle Accessories aren't measuring trip speed or cadence, first check the speed sensor ID for SP1 or SP2. Ensure the Speed and Cadence sensor icon is on by pressing the M1/+ or M2/- button. Verify the speed or cadence sensor and magnet are correctly positioned. Press any button to cancel the power-saving function. If the speed sensor battery is low, replace it with a new CR2032 battery and press the RESET button on the speed sensor.
  • R
    Rachael DiazAug 26, 2025
    What to do if no displays appear on Cateye Bicycle Accessories?
    • J
      James GreerAug 26, 2025
      If no displays appear on your Cateye Bicycle Accessories, the battery for the computer might be empty. Replace it with a new CR2032 battery and then perform the restarting operation.
  • G
    George AllenAug 28, 2025
    What to do if Cateye V3 Bicycle Accessories flashes on the screen?
    • A
      Anna FisherAug 28, 2025
      If your Cateye Bicycle Accessories screen flashes, it indicates that the computer's battery is low. Replace it immediately with a new CR2032 battery and perform the restarting operation.
  • R
    randysnyderAug 30, 2025
    How to fix Cateye V3 heart rate sensor (speed sensor) ID check failed?
    • D
      Dawn LewisAug 30, 2025
      If the heart rate sensor or speed sensor ID check fails on your Cateye Bicycle Accessories, the battery for the heart rate sensor or speed sensor may be depleted. Replace the battery with a new CR2032 and check the sensor ID again.
  • V
    villanuevasandraSep 2, 2025
    Why abnormal values appear on Cateye V3?
    • A
      Amy ShawSep 2, 2025
      If abnormal values appear on your Cateye Bicycle Accessories, electromagnetic waves from nearby objects like railway tracks or transmitting stations might be interfering. Move the unit away from these sources and reset the data.
  • D
    Dr. Caitlin MannSep 4, 2025
    What to do if meaningless display appears on Cateye V3 Bicycle Accessories?
    • J
      jessica67Sep 4, 2025
      If a meaningless display appears on your Cateye Bicycle Accessories, perform the restarting operation.
  • S
    Stephen LivingstonSep 6, 2025
    Why lap data cannot be stored on Cateye V3?
    • D
      Danielle NormanSep 6, 2025
      If your Cateye Bicycle Accessories cannot store lap data, it might be immediately after pressing the LAP button. Delete data files with several laps from the file view to free up space for lap recording. If the recording range is exceeded, perform the resetting operation for further measurements.
  • K
    Kimberly WilsonSep 8, 2025
    Why measurement data cannot be stored on the file view of Cateye Bicycle Accessories?
    • E
      Eric Andrade MDSep 8, 2025
      If measurement data cannot be stored on the file view of your Cateye Bicycle Accessories, it may be because the total number of laps has reached 99. Delete data files that contain several laps from the file view to create free space for lap recording.

Summary

Introduction

Important Usage Notes

Contains critical safety and usage notes for the manual, marked with warnings.

Manual Section Overview

Provides an overview of the manual's sections for installation, operation, and advanced features.

Proper Use and Safety Guidelines

Device Icons and Safety Cautions

Explains icons used for warnings and tips, and provides essential safety precautions for device use.

2.4 GHz Wireless System Explanation

Explains the wireless technology and potential sources of interference.

Computer Components and Display

Computer Unit Parts Identification

Identifies the physical components on the front and back of the computer unit.

Included Accessories

Lists the standard accessories that come with the computer, such as sensors and bands.

Screen Display Indicators

Details the various icons and indicators shown on the computer's screen.

Bicycle Installation Guide

Bracket Mounting

Instructions for securely attaching the bracket to the bicycle's stem or handlebar.

Sensor and Magnet Mounting

Guidance on positioning and securing the speed and cadence sensors and magnets.

Sensor Installation Adjustments

Adjusting Sensor-to-Magnet Distance

Specifies the correct gap between the speed/cadence sensor and the magnets for optimal function.

Securing Mounted Parts

Instructions for firmly tightening all installed sensors, magnets, and brackets.

Computer Unit Attachment;Removal

Steps for safely attaching and detaching the main computer unit from its mount.

Initial Computer Setup

Battery Insulation Sheet Removal

First-time setup step to remove the battery insulation sheet before use.

Formatting and Restarting Operations

Procedure for initial setup or after battery replacement to reset device settings.

Date and Clock Configuration

Guide to setting the device's date and time format, year, month, and day.

Tire and Sensor Configuration

Tire Circumference Measurement and Input

Instructions on how to determine and enter tire size for accurate measurement.

Sensor ID Synchronization (HR)

Steps to pair the heart rate sensor with the computer by synchronizing their IDs.

Sensor ID and Unit Settings

Speed;Cadence Sensor ID Synchronization

Ensures the speed/cadence sensor is mounted properly and synchronizes its ID.

Speed Unit Selection

How to choose between kilometers (km) and miles (mile) for speed measurement.

Operation Test Procedure

Verifies the correct functioning of the speed and cadence sensors after installation.

Basic Computer Operation

Measurement Screen Data Switching

Explains how to switch between different data displays on the main measurement screen.

Starting and Stopping Measurements

Details auto-mode and manual start/stop functions for measurement recording.

Backlight and Measurement Data Reset

How to activate the screen backlight and reset measurement data.

Power-Saving Mode Function

Explains how the device enters and exits low-power mode to conserve battery.

Measurement Screen Data Fields

Upper and Middle Display Data

Details current speed, heart rate, cadence, and their average/maximum values.

Lower Display Data Fields

Explains elapsed time, trip distance, countdown, lap data, date, clock, and calorie consumption.

Advanced Measurement Features

Pace Indicator Functionality

Describes pace arrow icons indicating speed/heart rate relative to average.

Lap Data Recording and Review

How to record lap data, including lap time, split time, and trip distance.

Countdown Distance Setting and Use

Setting and using a countdown for predetermined target trip distances.

Target Heart Rate Zone Setup

Heart Rate Zone Status Display

How the screen shows if the target zone is active or if the heart rate is outside it.

Computer Configuration Menu Overview

Navigating the menu to view and change various computer settings.

File Management and Data Recording

Data Recording to Files

Explains what measurement data is automatically saved into files after each ride.

Reviewing Saved Ride Data

How to access and review past ride data files saved in the computer.

File Data Review and Deletion

Viewing Lap Data within Files

How to review specific lap data, including averages and maximums, within a saved file.

Deleting Saved Data Files

Procedures for removing unwanted ride data files from the computer.

Clock and Wheel Settings

Clock and Date Format Configuration

Setting the clock display format (12/24h) and date display formats.

Wheel Size and Tire Circumference Setup

Selecting wheel size (A/B) and entering tire circumference for accurate measurement.

Sensor and Unit Configuration

Sensor ID Synchronization Procedure

Process to ensure the computer correctly communicates with sensors by synchronizing IDs.

Measurement Unit (km;mile) Selection

How to switch between metric (km) and imperial (mile) units for speed and distance.

Manual Total Distance Entry

Manually entering the total accumulated distance, typically after formatting.

Mode and Sound Settings

Auto-Mode Function Control

Enabling or disabling the auto-mode for automatic start/stop of measurement.

Countdown Distance Setup

Setting a specific target distance for the countdown feature.

Sound Alert Configuration

Controlling audible alerts for heart rate zones and button presses.

Target Heart Rate Zone Setup

Selecting Target Heart Rate Zone

Choosing a target heart rate zone (OFF, 1, 2, 3, or 4) for training.

Defining Upper and Lower Heart Rate Limits

Setting custom upper and lower heart rate boundaries for a selected zone.

Heart Rate Training Strategies

Training for Competition Goals

Setting target zones for different competition goals like endurance or anaerobic capacity.

Utilizing Target Heart Rate Zones

How the computer alerts and records data when heart rate is in or out of the target zone.

Troubleshooting Display Issues

Display Motion and Response Problems

Diagnosing and resolving issues related to slow screen response or no display.

Heart Rate Signal Reception Issues

Steps to fix problems with the heart rate sensor connection and signal reception.

Troubleshooting Operations and Batteries

Operational and Measurement Errors

Resolving issues with starting/stopping measurement, lap data, or settings changes.

Battery Replacement Procedures

Instructions for replacing batteries in the computer, heart rate sensor, and speed sensor.

Maintenance and Accessories

Daily Care and Cleaning

Routine cleaning and checks for the computer, sensors, and magnets.

Spare Parts and Kits

List of available replacement parts and accessory kits for the device.

Product Specifications and Registration

Display, Control, and Communication Specs

Details on display functions, control system, and communication specifications.

Power, Dimensions, and Environment Specs

Information on battery life, dimensions, weight, and operating/storage temperature ranges.

Product Registration Information

Instructions on how to register the product online or via mail for warranty service.

Limited Warranty Details

Information regarding the two-year warranty coverage for the computer, sensors, and strap.

Cateye V3 Specifications

General IconGeneral
WirelessYes
CadenceYes
Battery TypeCR2032
Water ResistanceYes
TypeCycle Computer
Battery LifeApproximately 1 year
Mounting TypeHandlebar
ModesSpeed, Distance, Time, Cadence

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