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page 31
COMMERCIAL PRODUCTS DIVISION
Other aspects of the heart rate option are discussed below:
Detecting a Heart Beat
It may take several seconds for the heart rate receiver to detect a number of
valid
heartbeats. Once it does, the user’s heart rate appears in the Heart Rate
display.
If "— — —" appears when the Heart Rate indicator (LED) is lit and all the
previously discussed steps have been taken, then you need to do the following:
Touch-sensitive heart rate
• to conduct electrical impulses from a user’s heart,
both
touch-sensitive grips
(metal strips) must be in contact with the user’s skin. Usually, the concentra-
tion of salts in a person’s perspiration provides enough conductivity to
transmit a signal to the receiver in the display console. However some people,
because of body chemistry or erratic heartbeats, cannot use the heart rate
touch-sensitive feature on the C764. A POLAR® chest strap may provide
better results.
POLAR chest strap
• Make sure that the electrodes on the chest strap are moist and placed
properly against the skin. Sometimes, due to body chemistry, the chest strap
cannot successfully detect and transmit a heart rate. If this occurs, use the
electrolyte spray that accompanies the Precor Heart Rate Option package.
Follow the directions on the bottle. After spraying the electrode strips on the
chest strap, check to be sure that the strap is comfortably tight around the
chest and centered in the middle of the user’s chest.
• Another possibility which can cause erratic readings is that the chest strap’s
battery may be dead. To purchase a new chest strap, refer to
Obtaining
Service
on page 7.