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HEART RATE READING IS ERRATIC OR EXTREMELY HIGH
If the chest strap is worn near sources of electromagnetic signals, these signals may be strong enough to elevate heart
rate readings. Possible sources include:
• Television sets and/or antennas, cell phones, computers, cars, high voltage power lines and motor driven exer-
cise equipment.
• Another heart rate transmitter within three feet, or one meter, may also cause abnormal heart rate readings.
6.4 TROUBLESHOOTING THE HAND PULSE SENSORS
If the heart rate reading is erratic or missing, do the following:
• Dry moist hands to prevent slipping.
• Apply hands to both sensors, one in each hand.
• Grasp the sensors firmly.
• Apply constant pressure around the sensors.
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