If the ECG machine malfunctions you will need to redo the test. You can try unplugging the machine and replugging it to see if that resets the system.
It can be tested with something called an ecg simulator.
An ECG or EKG machine is a machine that allows the heart to be studied.The machine records the electrical activity with in the heart.ECG means Electyocardiograph
ELECTROCARDIOGRAPH
What is needed to operate a machine is energy.
An ECG (Electrocardiography) machine.
an ecg machine
LEAD DISPLACEMENT
Willem Einthoven Invented the accurate ECG using Strings Galvonometer, but Alexander Muirhead made the first prototype.
To operate a sewing machine, you will need a place to set the machine up, thread, bobbins and a needle for your machine and fabric type.
In order to operate a binding machine you do not need special training. It is pretty simple to operate.
Operate. I can operate that very simple machine.