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Monark 939 E
16
Heart rate (Telemetry system)
The test person’s heart rate can be monitored by
chestbelt telemetry system. The system with chestbelt
electrodes is standard equipment.
Fuss-free HR measurement requires that the belt is
correctly placed. When it is correctly fitted the logo
on the belt will be central and readable, outward
and upright, by another person. Before putting on
the belt, clean the skin where the belt is to be placed.
The chest belt should be secured at a comfortable
tension around the mid section, just below the breast
muscle, see
Fig: Placement of the chest belt
. Moisten
the electrodes before use, see
Fig: Electrodes on the
back of the chest belt
. To make contact with the HR
receiver on the bike, the distance should not be more
than 100 cm. It is especially important when first used
to identify the chest belt with the sensor, by standing
close to get the HR (maximum 60 cm). This relates
especially to the Polar heart rate belt.
NOTE! Electromagnetic waves can interfere with the
telemetry system. Cellular phones are not allowed to
be used near the bike during test.
In case of problems, turn off WiFi, Bluetooth and
similar on computers nearby.
If the ergometer is to be used without a chestbelt note
that max heart alarm should be set in “off” position
so that external noise cannot cause a random max
pulse or higher. This switch is in “on” position by
default. If the heart rate exceeds the maximum level
set, the alarm will sound and the ergometer braking
force will decrease until the heart rate drops below
the alarm level.
Monitoring of the test person
The ergometer performs automated tests virtually by
itself, requiring minimal intervention by the operator.
This allows the operator to pay careful attention to
the test person without distraction. The response to
the exercise protocol can be accurately estimated
and appropriate action to assist the test person, if
necessary, may be given. The rider is subjected to
considerable exercise in certain advanced protocol
stages. The effect on the test person should not be
underestimated.
During the testing, the general appearance and heart
rate may be the most crucial factors to monitor. The
testing should be stopped immediately if the test
person reports chest pain, difficulty breathing, etc. A
system of prompt medical attention should be set up
prior to testing, in case of emergency.
The test person may also show difficulty in regulating
the speed of the ergometer. The power will be properly
regulated regardless of the speed, assuming that the
protocol work type is not force and that the speed is
maintained above the pedal low setting (default is 30
rpm).
In addition, some test persons may become sensitive
to the display on the terminal. If this is suspected, the
controller may be removed from its cradle and located
out of view. Similarly, the pulse LED may disturb the
test person and may be disabled.
Fig: Placement of the chest belt
Fig: Electrodes on the back of the chest belt (1)
