Appendix

Problem

Solution/Answer

The heart rate

A smaller elastic strap is sold separately.

monitor strap is

Go to http://buy.garmin.com.

too big.

 

 

• Make sure the heart rate monitor is snug against

 

your body.

 

• Warm up for 5–10 minutes. If the problem persists,

 

continue with the following suggestions.

 

• Reapply moisture to the sensors. Use water, saliva,

 

or electrode gel. Clean the sensors. Dirt and sweat

 

residue on the sensor can interfere with heart rate

 

signals.

 

• Synthetic fabrics that rub or flap against the heart

The heart rate data

rate monitor can create static electricity that

interferes with heart rate signals. Wear a cotton shirt

is inaccurate or

or wet your shirt if suitable for your activity.

erratic.

• Position the heart rate monitor on your back instead

 

 

of your chest.

 

• Strong electromagnetic fields and some 2.4 GHz

 

wireless sensors can interfere with your heart rate

 

monitor. Sources of interference may include very

 

high-voltage power lines, electric motors, microwave

 

ovens, 2.4 GHz cordless phones, and wireless LAN

 

access points. After you move away from the source

 

of interference, your heart rate data should return to

 

normal.

42

FR70 Owner’s Manual