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.
In essence, an oscilloscope is a data acquisition box that records the voltage from your circuit. Another device on your computer already does this: the sound card. The main differences are the level of voltage each can handle, and how fast they sample the voltage (more on that later).Since the sound card on your computer can only handle a small amount of voltage (around +/- .6V to .8V) you need to scale it down.nother device on your computer already does this: the sound card. The main differences are the level of voltage each can handle, and how fast they sample the voltage (more on that later). Since the sound card on your computer can only handle a small amount of voltage (around +/- .6V to .8V) you need to scale it down.