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