True Fitness 400 Series - Manual (Page 26)

Important Points About Heart Rate Control
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maximum grade of 6%. The walker is limited to a maximum
speed of 4.0 mph and grade will be used if required to
elevate the heart rate up to a maximum of 6%.
Important Points About Heart Rate Control
The Heart Rate Monitor transmitter strap provided with your
treadmill should be worn directly against your skin at about
one inch below the pectoral muscles/breast line. Women
should be careful to place the transmitter below their bra
line.
Some moisture is necessary between the strap and your skin.
Sweat from your exercise works best, but ordinary tap water
may be used prior to your workout if desired.
If the transmitter strap is adjusted or moved while
exercising, communication may be temporarily affected.
If communication is lost for 30 seconds, the treadmill will
automatically shut off.
The transmitter strap emits a fairly weak radio signal to the
treadmill, so interference from other radio and sound waves
(including everything from cordless telephones to
loudspeakers) is possible. The good news is that interference
is usually quite brief. If you continue to have intermittent
heart rate display problems, consult your local service
technician, as the transmitter strap batteries may be low.
Make sure you breath smoothly and regularly.
Talking during your workout usually causes heart rate spikes
of 5 beats per minute or more, so avoid talking as much as
possible.
Maintain a smooth walking or running motion.