A Defibrillator Analyzer is basically meant to measure the energy content in the discharge pulse.It will analyze the pulse output of a monophasic or biphasic defibrillator. The primary measure of the output is the Energy that it contains. Other information deals with the maximum voltage and current as well as the pulses timing with respect to the R-wave. The human body has characteristic impedance may vary, but 50 ohms is used for comparative defibrillator testing. The Defibrillator analyzer has a large internal 50 ohm non-inductive resistor to simulate a body. It is sized to accept repeated pulses at the maximum energy levels.It works on the principle that the energy contained in a pulse of arbitrary shape and time is given by E=