Polar Electro S710 User Manual page 48

Polar heart rate monitor and interference
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.
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Minimising possible risks in exercising with a heart rate monitor
Exercise may include some risk, especially for those who have been
sedentary. To minimise possible risks consider the following advice:
Before beginning a regular exercise program consult your doctor
• if you are over 40 years of age and have not been following a
regular exercise program during the past 5 years
• if you smoke
• if you have high blood pressure
• if you have high blood cholesterol
• if you have any signs or symptoms of any disease
• if you are recovering from a serious illness or a medical
treatment e.g. surgery
• if you use a pacemaker or another implanted electronic
device.
Note also that in addition to exercise intensity the heart rate can be
affected by, amongst others, heart, circulation (particularly high blood
pressure) and asthma and other breathing medications, as well as some
energy drinks, alcohol and nicotine.
It is important to be sensitive to your body's reactions during
the exercise. If you feel unexpected pain or tiredness regarding your
exercise intensity level, it is recommended to stop the exercise or
continue at a lighter intensity.
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