Nautilus EV7.18 - Manual (Page 11)

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• Test your chest strap with a machine that you know is working, or with a heart
rate watch that you know is working.
Maintaining the Transmitter Belt
Clean the chest belt regularly with mild soap and water, then dry thoroughly
— residual sweat and moisture keeps the transmitter active and will drain the
battery in the transmitter. Do not use abrasives or chemicals such as steel wool or
alcohol for cleaning, as they can damage the electrodes permanently. The supplied
chest belts use a sealed battery and are non-replaceable. On average, a chest
strap battery should last for approximately 1500-2000 hours of use. Replacement
belts can be purchased from an Authorized Nautilus
® Fitness Retailer.
Contact Heart Rate
(EV7.18 model only)
Through the use of stainless steel sensors built into the elliptical’s Upper-Body
Arms and using sophisticated software, heart rate can be checked at any time
during a workout. As with the wireless telemetry chest belt, the heart rate is shown
on the display in the same manner.
The contact heart rate system’s ability to detect a heart rate signal is infl uenced by
several factors. Movement of the hands while they are in contact with the sensors
produces interference. For this reason, users should avoid moving their hands while
using the contact heart rate grips. Calluses and hand lotion act as an insulating
layer to reduce the signal strength. Also, the
EKG signal generated by some individuals is not
strong enough to be detected by the sensors.
These individuals should opt for the telemetry
method of heart rate monitoring.
Contact heart rate input signals are acquired
only during contact between your hands and the
stainless steel sensors on the handrails. To use
the contact heart rate feature, place your hands
around the handles so that your hands touch
both the front and the back of the sensors (fi g
6). After the initial contact heart rate signal is detected, the controller will enter a
validation phase requiring a good heart beat signal within 10 to 15 seconds, or until
the system acquires a valid signal. During the validation phase, the display will not
recognize telemetry heart rate signals. If, during exercise, the heart rate displayed
is erratic, it may be helpful to remove your hands from the handles, wipe them and
place them back on the handles.
HEART RATE MONITORING