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The loop
and hook
2
your right side.
4 Wrap the heart rate monitor around your chest, and
connect the strap hook to the loop.
NOTE: Make sure the care tag does not fold over.
After you put on the heart rate monitor, it is active and
sending data.
Tips for Erratic Heart Rate Data
If the heart rate data is erratic or does not appear, you
can try these tips.
y Reapply water to the electrodes and contact
patches (if applicable).
y Tighten the strap on your chest.
y Warm up for 5 to 10 minutes.
y Follow the care instructions
Rate Monitor,
page 18).
y Wear a cotton shirt or thoroughly wet both sides of
the strap.
Synthetic fabrics that rub or flap against the heart
rate monitor can create static electricity that
interferes with heart rate signals.
y Move away from sources that can interfere with
your heart rate monitor.
Sources of interference may include strong
electromagnetic fields, some 2.4 GHz wireless
sensors, high-voltage power lines, electric motors,
ovens, microwave ovens, 2.4 GHz cordless phones,
and wireless LAN access points.
Caring for the Heart Rate Monitor
A buildup of sweat and salt on the strap can decrease
the ability of the heart rate monitor to report accurate
data.
y Rinse the heart rate monitor after every use.
y Hand wash the heart rate monitor after every
seven uses or one pool swim, using a tiny amount
of mild detergent, such as dishwashing liquid.
NOTE: Using too much detergent may damage the
heart rate monitor.
y Do not put the heart rate monitor in a washing
machine or dryer.
y When drying the heart rate monitor, hang it up or
lay it flat.
18
connection should be on
3
(Caring for the Heart
NOTICE
Running Dynamics
You can use your compatible D2 device paired with
the HRM-Run accessory or other running dynamics
accessory to provide real-time feedback about your
running form. If your D2 device was packaged with the
HRM-Run accessory, the devices are already paired.
The running dynamics accessory has an
accelerometer that measures torso movement in order
to calculate six running metrics.
Cadence: Cadence is the number of steps per minute.
It displays the total steps (right and left combined).
Vertical oscillation: Vertical oscillation is your bounce
while running. It displays the vertical motion of
your torso, measured in centimeters.
Ground contact time: Ground contact time is the
amount of time in each step that you spend
on the ground while running. It is measured in
milliseconds.
NOTE: Ground contact time and balance are not
available while walking.
Ground contact time balance: Ground contact time
balance displays the left/right balance of your
ground contact time while running. It displays
a percentage. For example, 53.2 with an arrow
pointing left or right.
Stride length: Stride length is the length of your stride
from one footfall to the next. It is measured in
meters.
Vertical ratio: Vertical ratio is the ratio of vertical
oscillation to stride length. It displays a
percentage. A lower number typically indicates
better running form.
Training with Running Dynamics
Before you can view running dynamics, you must put
on a running dynamics accessory, such as the HRM-
Run accessory, and pair it with your device
Your Wireless Sensors,
page 45). If your D2 Delta PX
was packaged with the accessory, the devices are
already paired, and the D2 Delta PX is set to display
running dynamics data screens.
1 Select an option:
• If your running dynamics accessory and D2 Delta
PX device are already paired, skip to step 7.
• If your running dynamics accessory and D2
Delta PX device are not already paired, complete
all the steps in this procedure.
2 Hold MENU.
3 Select Settings > Activities & Apps�
4 Select an activity.
5 Select the activity settings.
6 Select Data Screens > Add New�
7 Select a running dynamics data screen.
NOTE: The running dynamics screens are not
available for all activities.
(Pairing
Heart Rate Features
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