The test also will help your doctor find out if there are: 1  Problems with the outer lining of your heart (the pericardium). 2  Problems with the large blood vessels that enter and leave the heart. 3  Blood clots in the chambers of your heart. 4  Abnormal holes between the chambers of the heart.
Part of the Electronics glossary: An oscilloscope is a laboratory instrument commonly used to display and analyze the waveform of electronic signals. In effect, the device draws a graph of the instantaneous signal voltage as a function of time.
Part of the Electronics glossary: An oscillator is a mechanical or electronic device that works on the principles of oscillation: a periodic fluctuation between two things based on changes in energy.Computers, clocks, watches, radios, and metal detectors are among the many devices that use oscillators.n a computer, a specialized oscillator, called the clock, serves as a sort of pacemaker for the microprocessor. The clock frequency (or clock speed) is usually specified in megahertz (MHz), and is an important factor in determining the rate at which a computer can perform instruction s.