NeuLog NUL-218 Guía General página 21

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Connecting to the ECG sensor
The NeuLog electrocardiogram sensor uses three
reusable clip leads for easy connection to the arms and
legs. The heart's electrical fluctuations can be measured
as a voltage signal appears between the left and the
right arms.
This is a noisy signal and very difficult to measure.
Instead, it is much better to use a reference electrode
(usually connected to the left leg) and to measure the
voltages of the left arm and the right arm in reference to
this electrode and to amplify the difference between
them. This is how it is done in NUL-218.
Leads:
Black – Reference
Red – Left
Yellow – Right
The NUL-218 is completely isolated from electrical
power and signal in order to prevent the effect of these
on the test subject.
V2018.01 English