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II Chest measurement
If palm measurement is not ideal, please adopt chest
measurement. Hold the device with the right hand. Make
sure that the palm and fingers touch the metal electrode
I and II reliably. Place the electrode III on bare skin about
5cm away below the left nipple. The ECG signal detected
by Chest measurement is similar to Lead V ECG signal.
Improper operating method
A. The contact place of electrode III deviates from left chest.
B. The holding gesture is incorrect.
C. The electrode can not contact bare skin completely.
(For example place the electrode on clothing.)
III Leg measurement
If palm measurement is not ideal and it is not convenient to use chest
measurement, the leg measurement is recommended. When measuring, hold
the device with the right hand. Make sure that the palm and fingers touch the
metal electrode I and II reliably. Place the electrode III on the skin 10cm away
above the left foot ankle. The ECG signal detected by Leg measurement is
equivalent to Lead II ECG signal.
Improper operating method
A. You moved your foot.
B. Wrong holding gesture.
C. The electrode III can not contact bare skin completely (For example, place
the electrode III on the sleeve of trousers or socks.).
IV Lead wire measurement
For the sake of obtaining high quality ECG, lead wire measurement can
be used. Connect the lead and the device effectively by lead wire socket.
Place the electrodes and connect the lead wires as the figure below to
obtain the Lead II ECG signal; if you want to measure Lead I and Lead III
ECG signal, please connect the lead wires to the electrodes according to
the following table.
Improper operating method
A. Wrong in connecting lead port.
B. Place the electrode in the wrong part of your body.
ECG Leads Configuration and Electrodes Location Table
Electrode Lead
Location
Lead
I
Lead
II
Lead
III
The intersection between the centerline of the right
clavicle and Rib 2.
RA
RA
LA
The intersection between the centerline of the left
clavicle and Rib 2.
LL
LA
RA
Between the left edge of the breast bone and Rib 5
LA
LL
LL
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