Frequently Asked Questions - Polar Electro RCX5 User Manual

ENGLISH
Marking on case back
Water resistant 30 m/50 m
Water resistant 100 m
Using the Training Computer in Water
The training computer may be worn when swimming. It is not, however, a diving instrument. To maintain
water resistance, do not press the buttons of the training computer under water. When measuring heart
rate in water, you may experience interference for the following reasons: Pool water with a high chlorine
content, and seawater, are very conductive. The electrodes of a heart rate sensor may short-circuit,
preventing ECG signals from being detected by the heart rate sensor. Jumping into water or a strenuous
muscle movement during competitive swimming may shift the heart rate sensor to a location on the body
where ECG signals cannot be picked up. The ECG signal strength is individual and may vary depending on
the individual's tissue composition. Problems occur more frequently when measuring heart rate in water.
If you are having problems measuring heart rate in salt water or highly chlorinated water, we recommend
you use the Polar T31c heart rate sensor.

Frequently Asked Questions

What should I do if...
...the battery symbol and
The low battery indicator is usually the first sign of an expired battery. However, in cold conditions the low
battery indicator may appear. The indicator will disappear as soon as the temperature rises enough. When
the symbol appears, the training computer sounds and backlight are automatically deactivated. For further
information on changing the battery, see Important Information (page 52).
...I do not know where I am in the menu?
Press and hold BACK until the time of day is displayed.
...there are no reactions to any buttons?
Reset the training computer by pressing all the buttons simultaneously for two seconds until the display
fills with digits. Press any button, select language and set the time and date in Basic Settings after the
reset. All other settings are saved. Skip the rest of the settings by pressing and holding BACK.
...the heart rate reading becomes erratic, extremely high or shows nil (00)?
• Make sure the heart rate sensor strap has not loosened during exercise.
• Make sure the textile electrodes in the sports apparel fit snugly.
• Make sure the electrodes of the heart rate sensor strap are moistened.
• Make sure the heart rate sensor is clean. Strong electromagnetic signals can cause erratic readings. For
further information, see Precautions (page 55).
• If the erratic heart rate reading continues despite moving away from the source of disturbance, slow down
your speed and check your pulse manually. If you feel it corresponds to the high reading on the display,
you may be experiencing cardiac arrhythmia. Most cases of arrhythmia are not serious, but consult your
doctor nevertheless.
• A cardiac event may have altered your ECG waveform. In this case, consult your physician.
...
Check heart rate transmitter!
signal?
• Make sure the heart rate sensor strap has not loosened during exercise.
• Make sure the electrodes of the heart rate sensor are moistened.
• Make sure the electrodes of the heart rate sensor are clean and undamaged.
58 Important Information
is displayed?
Low battery
is displayed and your training computer cannot find your heart rate
Water resistant characteristics
Suitable for bathing and swimming
Suitable for swimming and snorkeling (without air
tanks)