Polar S510 User Manual download pdf (Page 44)

Electromagnetic interference

Disturbances may occur near high voltage power lines, traffic lights,

overhead lines of electric railways, electric bus lines or trams, televisions,

car motors, bike computers, some motor driven exercise equipment, cellular

phones or when you walk through electric security gates.

Exercise equipment

Several pieces of exercise equipment with electronic or electrical

components such as LED displays, motors and electrical brakes may cause

interfering stray signals. To try to tackle these problems, relocate the Polar

wrist receiver as follows:

1. Remove the transmitter from your chest and use the exercise equipment

as you would normally.

2. Move the wrist receiver around until you find an area in which it

displays no stray reading or flashing of the heart symbol. Interference is

often worst right in front of the display panel of the equipment, while

the left or right side of the display is relatively free of disturbance.

3. Put the transmitter back on the chest and keep the wrist receiver in this

interference-free area as far as it is possible.

4. If the Polar heart rate monitor still does not work with the exercise

equipment, this piece of equipment may be electrically too noisy for

wireless heart rate measurement.

Polar heart rate monitor and interference

H 85

Using the Polar S510 in a water environment

Your Polar S510 is water resistant to 20 metres/ 60 feet.

Heart rate measurement in a water environment is technically demanding

for the following reasons:

• Pool water with a high chlorine content and seawater may be very

conductive and the electrodes of Polar transmitter may get short

circuited and ECG signals cannot be detected by the transmitter unit.

• Jumping into the water or strenuous muscle movement during

competitive swimming may cause water resistance that shifts the

transmitter on the body to a location where it is not possible to pick up

ECG signal.

• The ECG signal strength varies depending on the individual’s tissue

composition and the percentage of people who have problems in

heart rate measuring is considerably higher in a water environment

than in other use.

H. PRECAUTIONS

H 84

H 85H 84

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Polar S510 User Manual Page 44