The device used to measure electrical voltage is called a voltmeter. The information provided by the voltmeter is only related to the magnitude of the voltage. It is also possible to say that it presents the direction of the voltage to its users with numerical data. The device developed for people who cannot understand or find the information desired from the numerical data in question is the device called oscilloscope.
Oscilloscope, which is a device that works by applying voltage, has wide measurement possibilities. It is a great advantage in terms of understandability that it shows electrical energy in wave form. The oscilloscope, which displays the amplitude as time dependent graphs along with the change in both current and voltage values, makes the pulse and gap times, frequencies and periods, amplitude of the signals available.
Conditions such as high input impedance, measuring the voltages at very wide frequencies at the same sensitivity level, showing the voltage value by reducing the error rate regardless of the waveform, determining the maximum level of the value that can be measured after making the necessary adjustment, are the situations that show the advantages and reasons of the oscilloscope. The buttons on the oscilloscope and their meanings are as given below.
- Secs/Div: It determines the horizontal resolution of the signal present on the screen. This button is available to set how many microseconds or milliseconds each of the horizontal squares on the oscilloscope.
- Volts/Div: It is the button to determine the vertical resolution and adjust the tension of each frame in the context of the vertical step.
- Trigger: It is a fall found only in digital oscilloscopes. This button is used to determine at which signal level to start measuring.
- Horizontal Pos: A setting used to adjust and fit signals of length and size that will not fit on the screen.
- Auto: It is used only in digital oscilloscope. It is used to ensure that signals that do not fit on the screen, such as horzitonal adjustment, will fit. However, while horizontal adjustment is used only to adjust the horizontal position, Auto makes it possible to adjust both the horizontal and vertical positions.
- Stop: This button, which is only available on digital oscilloscopes, allows the image of the signal to be taken and recorded at any time. This button is very important for people who want to examine the current value later.
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Used Oscilloscope For Sale Or New Oscilloscope?
It is not possible to give an exact answer to this question. The oscilloscope that meets the following criteria is available even if it is old. However, it should be known that it is beneficial to buy a new one. The tips for getting an oscilloscope for sale are as follows.
- People seeking clues to get an oscilloscope for sale should first pay attention to vertical sensitivity. Ideal vertical sensitivity should be 50mV / section. This means that one in twenty of a Volt can be displayed at a size equivalent to the height of a section on the screen.
- Another factor to be considered is the vertical bandwidth. As the vertical bandwidth increases, measurable signs also increase. However, 25 MHz bandwidth is generally seen as sufficient.
- Vertical delay is another factor to be considered when getting an oscilloscope for sale. The purpose of the vertical delay is to ensure that the head of the screen marks are not missed. As this time decreases, the quality of the oscilloscope increases.
- Vertical elevation level is another factor that is inversely proportional to quality. In other words, as the vertical rise time decreases, the quality of the oscilloscope increases. It should also be known that the vertical rise level should be below 70ns.
- Deflection accuracy is required to measure both pulse widths and signal frequencies with sufficient accuracy. The deflection error should not be worse than 5%.
- The horizontal deflection zone or time is an element that people looking for tips for getting an oscilloscope for sale should pay attention to.