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.
The Oscilloscope. The oscilloscope is basically a graph-displaying device-it draws a graph of an electrical signal. In most applications the graph shows how signals change over time: the vertical (Y) axis represents voltage and the horizontal (X) axis represents time.n conclusion, to use an analog oscilloscope, you need to adjust three basic settings to accommodate an incoming signal: 1  The attenuation or amplification of the signal. 2  Use the volts/div control to adjust the amplitude of the signal before it is applied to the vertical deflection plates. 3  The time base.