The oscilloscope is a measuring instrument with which it is possible to give a graphical representation of electrical signals that vary over time. In other words, this electronic instrument allows you to observe what is happening at a particular point integrated in an electrical circuit.
The representation of electrical signals can be done in analogue or digital version. In any case, this device is used for data graphics on very different activities: radio or television, medical applications to evaluate constant vital signs, hydropower control or companies related to energy electric. On the other hand, appliance technicians employ this device to detect possible failures. Automotiveis repair shops are also used to know the vibration level of vehicles.
Elements that form it and its basic functioning
The oscilloscope has a screen on which electrical signals can be viewed. This screen shows a coordinate axis (the horizontal axis represents time and the vertical equals voltage). If the device’s screen accurately represented the signal we received, the image obtained would be irregular and it would not be possible to measure it. For this reason, this device has some controls that allow you to adjust the display of signals. Typically, these devices feature two waves to perform the measurement.
Basic oscilloscope controls allow you to see signals more clearly. Thus, the horizontal axis controls provide a variation of the time scale and, in this way, the signals can be seen at small intervals (for example, in milliseconds). On the other hand, with the commands it is possible to shift the signal to the right or to the left so that the image adjusts correctly to the characteristics of the screen.
In the signal that can be observed on the screen, the time scale is 250 microseconds
The different subdivisions allow to collect data on time increments smaller than the scale, in this case, each subdivision is equivalent to 50 microseconds. The vertical axis controls allow you to change the voltage scale to see clearly and depending on the amplitude the signal on the screen (which can be in volts or millivolts depending on the oscilloscope characteristics).
Logically, the most important aspect of this device is related to the interpretation of the signals that appear on the screen.