Garmin HRM-DUAL Quick Start Manual page 8

After you pair the first time, your device
automatically recognizes the heart rate
monitor each time it is activated.
Tips for Erratic Heart Rate Data
If the heart rate data is erratic or does not
appear, you can try these tips.
• Reapply water to the electrodes and
contact patches (if applicable).
• Tighten the strap on your chest.
• Warm up for 5 to 10 minutes.
• Follow the care instructions
• Wear a cotton shirt or thoroughly wet both
sides of the strap. Synthetic fabrics that
rub or flap against the heart rate monitor
can create static electricity that interferes
with heart rate signals.
• Move away from sources that can interfere
with your heart rate monitor.
Sources of interference may include
strong electromagnetic fields, some
2.4 GHz wireless sensors, high-voltage
power lines, electric motors, ovens,
microwave ovens, 2.4 GHz cordless
phones, and wireless LAN access points.
HRM-DUAL
(page 8).
EN
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