Polar Electro Running Sports RS100 User Manual page 13

Coded Heart Rate Transmission
Coded heart rate transmission reduces interference from other heart rate monitors that are close by. To make sure that the
code search is successful and to ensure trouble-free heart rate monitoring, keep the wrist unit within 1 meter/3 feet of your
transmitter. Check that you are not near other people with heart rate monitors or any source of electromagnetic disturbance
(for further information on interference, see Precautions on page 50).
Note: If the wrist unit does not display your heart rate, make sure the transmitter electrodes are moist and that the strap is snug enough.
Bring the wrist unit near the Polar logo on the transmitter to restart heart rate detection.
ENG
A frame around the heart rate symbol indicates a coded heart rate transmission.
A heart rate symbol without a frame indicates a non-coded heart rate transmission.
The heart rate measurement functions also in a non-coded mode, especially if there aren't
any sources of interface nearby.
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