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6.4 TROUBLESHOOTING THE OPTIONAL POLAR TELEMETRY HEART RATE CHEST STRAP
HEART RATE READING IS ERRATIC OR ABSENT ENTIRELY (CONTINUED)
Malfunction Probable Cause Corrective Action
Heart rate reading is initially
detected and functioning
normally but then is lost.
Use of personal electronic
devices, such as cell phones
and portable MP3 players,
causes external noise interfer-
ence.
Remove the source of noise or
reposition the exercise
equipment.
Equipment is in close proximity
to other sources of noise such
as audio/ video equipment, fans,
two way radios, and high volt-
age/high current power lines.
Heart rate readings are
abnormally elevated.
Television sets and/or antennas
generate electromagnetic
interference.
Move the treadmill a few inches
away from the probable cause,
or move the probable cause a
few inches away from the tread-
mill, until the heart rate readings
are accurate.
Cell phones generate
electromagnetic interference.
Computers generate electro-
magnetic interference.
Cars generate electromagnetic
interference.
High voltage power lines
generate electromagnetic
interference.
Motor driven exercise equip-
ment generates electromagnetic
interference.
Another heart rate transmitter
within 3 feet (1 meter)
generates electromagnetic
interference.
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