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7. ABOUT HEART RATE DETECTION
Heart rate detection functions are selected at the time of purchase. Not every
product has every type of heart rate detection. The following explains factors
that influence the performance of two of the most common types of heart rate
detection devices.
HEART RATE
Telemetry
The words “telemetry heart rate” refer to the detection of heart rate via a device
worn on the exerciser and transmitted over the air to a circuit board built into the
product. Telemetry heart rate devices are commonly worn on the exerciser’s
chest, where the pulse is strongest and relatively easy to detect.
The following explains conditions that affect the performance of the telemetry
heart rate function in all products.
●
The telemetry heart rate transmitter emits a wireless 5 kHz signal that is harm-
less to the human body. Inside the transmitter is a 3 V battery (CR2032). If the
battery voltage is too low, either the reception distance shortens or there will be
no reception whatsoever.
●
Secure the telemetry heart rate transmitter on your chest so that it stays in
place without making you feel uncomfortable. Moisten the skin for better contact.
●
Because the telemetry heart rate signal varies in strength from 20 Hz to 20
KHz, environmental interference can block signal reception. Physical vibration
and electronic devices, including stereos, TVs, and even fluorescent lights, can
interfere with signal reception. For best results, install the product in an area free
from such interference.
●
Space the product apart by at least 39 inches (100 cm) to avoid having the
heart rate value from one exerciser appear on a neighboring product.
HEART RATE
Contact
The words “contact heart rate” refer to the detection of the heart rate via sensors
on the product. By holding the sensors, the exerciser can view his or her heart rate
on the product display. Like telemetry heart rate, contact heart rate can be influ
-
enced by several factors. The following list includes some of these factors.
● A weak pulse makes it difficult to detect heart rate.
● Low systolic blood pressure makes it difficult to detect heart rate.
●
Dry, course palms impede heart rate detection. For best results, moisten your
palms. But do not apply hand lotion immediately prior to your workout, because
hand lotion can gum up the contact pads.
Heart rate devices built into this product are not medical devices. Heart rate values
are for reference only. Do not use them for medical diagnostic or treatment work.
CAUTION: Heart rate detection and transmission devices have been known to
interfere with the operation of pacemakers, possibly endangering human life. If you
have a pacemaker, exercise under your doctor’s supervision; take a test to ensure
your safety during the simultaneous use of the pacemaker and heart rate detection
devices. The use of such devices must be undertaken at your own risk.
