E80/E70 Digital Electrocardiograph User’s Manual
3-3
this way, the impact of AC disturbances may be reduced.
For the power supply period of battery, see the product specification.
For battery maintenance, please refer to the section of Battery.
3.3 Placing Cables
Insert patient cable pin into patient cable socket on the right side, and tighten
the screw.
3.4 Placing Electrodes
3.4.1 Skin Preparation for Electrode Placement
Good electrode-to-skin contact is important for a good ECG signal, as the
skin is a poor conductor of electricity. It is necessary to deal with the skin
properly before placing the electrodes. The steps are shown as follows:
1. Select sites with intact skin, without impairment of any kind.
2. Clip or shave hair from sites as necessary.
3. Gently abrade the skin to remove dead skin cells to improve the conductivity
of the electrode site.
4. Wash sites thoroughly with soap and water, leaving no soap residue.
(We do not recommend using ether or pure alcohol, because this dries the skin
and increases the resistance.)
5. Dry skin thoroughly.
3.4.2 Placing Electrode
The following table shows the ECG electrode label to identify each
electrode and its associated color of AAMI and IEC standards.
Electrode
labels
(IEC)
Electrode
colors
(IEC)
Electrode
labels
(AAMI)
Electrode
colors
(AAMI)
Position
R Red RA White sword arm (Inside)
L Yellow LA Black Left arm (Inside)
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