Garmin Forerunner 301 User Manual download pdf (Page 52)

48 Forerunner

301 Owner’s Manual

APPENDIX > HEART RATE MONITOR INFORMATION

Heart Rate Monitor Information

What is pairing and how does it work?

Pairing occurs automatically when you turn on the

Forerunner and you are wearing the heart rate monitor.

Pairing allows the Forerunner to receive reliable heart rate

data from your heart rate monitor by means of a secure,

digital signal.

When you put on the heart rate monitor, it begins

transmitting heart rate data plus a unique, randomly-

selected code. When you turn on the Forerunner, it begins

“listening” for data from the heart rate monitor. Once the

Forerunner “hears” two or more transmissions of heart rate

data that contain the same unique code, it pairs with the

heart rate monitor, creating a unique wireless link.

Once paired, the Forerunner will never receive conﬂicting

signals from another heart rate monitor, so you can exercise

in close proximity to other heart rate monitors without

fear of interference. If the Forerunner loses your heart rate

signal, the pairing process begins again automatically.

Follow these steps to pair successfully with your heart rate

monitor:

• Position the heart rate monitor and establish a strong

connection between it and your pulse.

• Position the Forerunner within range of the heart rate

monitor (90–110 cm or 35–43 in).

• Stand at least six feet away from any other heart rate

monitor (only while pairing).

Interference

Strong electromagnetic ﬁelds can interfere with

communication between your heart rate monitor and your

Forerunner. Common sources of interference include high

voltage power lines, electric motors, computers, televisions,

and mobile phones. Interference may cause your heart rate

to appear unusually high, freeze, or disappear. Once you

move away from the source of interference, your heart rate

reading should return to normal.

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Garmin Forerunner 301 User Manual Page 52