Vision Fitness T9800 Series Owner's Manual page 51

TROUBLESHOOTING YOUR HEART RATE MONITOR CHEST STRAP
PROBLEM: No pulse reading appears.
SOLUTION: There may be a poor connection between the contact
pads and skin. Remoisten electrodes.
SOLUTION: Transmitter is not properly positioned. Reposition the chest strap.
SOLUTION: Verify that the distance between transmitter and receiver is not
beyond the recommended range of 36 inches.
PROBLEM: There is an erratic pulse rate.
SOLUTION: Chest strap is too loose; readjust according to directions.
NOTE:
It is possible that heart rate monitors will not function properly on
some people due to a variety of reasons. It may be necessary to
experiment with the fit and position of the chest strap. Outside
interference sources such as computers, motors, etc., are also a major
source of problems for heart rate monitors.
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