SIGMA SPORT Cadence Transmitter STS Model 2016 User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your SIGMA SPORT Cadence Transmitter STS Model 2016. This wireless accessory is designed to measure pedal cadence and transmit data to compatible SIGMA bike computers.

The kit includes the cadence transmitter unit and a pedal magnet. The transmitter features a swivel function to ensure optimal alignment with the magnet for accurate measurement.

Image 1.1: The SIGMA SPORT Cadence Transmitter STS Model 2016, showing the main sensor unit and the separate pedal magnet.

2. Setup and Installation

Proper installation is crucial for accurate cadence measurement. Follow these steps to install the cadence transmitter and magnet on your bicycle.

2.1 Components

• Cadence Transmitter Unit
• Pedal Magnet
• Mounting Hardware (e.g., zip ties or rubber bands, not always included but typically required)

2.2 Installation Steps

1. Attach the Cadence Transmitter: Securely mount the cadence transmitter unit to the chainstay of your bicycle. Ensure it is positioned so that the 'SENSOR' side faces the crank arm. Use the provided mounting hardware to fasten it firmly, preventing movement during cycling.
2. Attach the Pedal Magnet: Affix the pedal magnet to the inside of your left crank arm. The magnet should be positioned to pass directly by the 'SENSOR' area of the transmitter unit with each pedal revolution.
3. Adjust Alignment: The cadence transmitter features a swivel function. Adjust the angle of the transmitter so that its 'SENSOR' surface is parallel to the pedal magnet as it passes. The optimal distance between the magnet and the sensor is typically 2-5 mm. Rotate the crank arm slowly to verify consistent proximity.
4. Pair with Bike Computer: Refer to your compatible SIGMA bike computer's manual for specific instructions on pairing the cadence transmitter. Generally, this involves activating a search function on the computer while the transmitter is active (e.g., by rotating the pedals).

3. Operating Instructions

Once installed and paired, the SIGMA SPORT Cadence Transmitter operates automatically when you begin cycling.

3.1 Automatic Activation

The transmitter is designed to activate automatically when it detects the pedal magnet passing by. There are no manual power buttons on the transmitter itself for daily use.

3.2 Data Transmission

The transmitter wirelessly sends cadence data to your compatible SIGMA bike computer using the STS (SIGMA Transmission System) protocol. Ensure your bike computer is set to receive cadence data.

3.3 Compatibility

This cadence transmitter is compatible with the following SIGMA bike computer models and all previous models with an STS pedal cadence sensor:

• BC 14.16 STS
• BC 14.16 STS CAD
• BC 16.16 STS
• BC 16.16 STS CAD
• BC 23.16 STS
• Sigma Topline Series 2009/2012

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your cadence transmitter.

4.1 Cleaning

Wipe the transmitter and magnet with a damp cloth to remove dirt and debris. Avoid using harsh chemicals or abrasive cleaners.

4.2 Battery Replacement

The transmitter is powered by a lithium battery with an approximate life of 1.5 years. When the battery is low, your bike computer may indicate a weak signal or inconsistent readings. Refer to the specific instructions for opening the transmitter unit and replacing the battery (typically a coin cell battery).

4.3 Waterproofing

The unit is rated IPX8, meaning it is protected against continuous immersion in water. However, avoid prolonged submersion and ensure the battery compartment is properly sealed after replacement to maintain its waterproof integrity.

5. Troubleshooting

If you experience issues with your cadence transmitter, consult the following common problems and solutions.

5.1 No Cadence Reading / Inconsistent Readings

• Check Alignment: Ensure the pedal magnet passes within 2-5 mm of the transmitter's sensor area. Adjust the swivel function of the transmitter for optimal alignment.
• Check Battery: A low battery can cause intermittent or no readings. Replace the battery if it's old or if your bike computer indicates a low battery.
• Re-pair Device: Try re-pairing the cadence transmitter with your bike computer. Refer to your bike computer's manual for pairing instructions.
• Interference: Ensure there are no strong magnetic fields or other wireless devices operating very close to the transmitter that could cause interference.
• Firm Attachment: Verify that both the transmitter and magnet are securely attached and not moving during cycling.

5.2 Transmitter Not Detected by Bike Computer

• Activate Transmitter: Rotate the pedals to activate the transmitter before attempting to pair.
• Proximity: Ensure the bike computer is within range of the transmitter during the pairing process.
• Battery Level: A completely depleted battery will prevent the transmitter from being detected.

6. Specifications

7. Warranty and Support

For information regarding warranty coverage and technical support, please refer to the official Sigma Sport website or contact your local Sigma Sport dealer. Keep your proof of purchase for any warranty claims.

Additional protection plans may be available from your retailer at the time of purchase.