How to use an Oscilloscope DSO Tutorial for Beginners


Sheetal Chintapatla


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hey guys this is Sheetal here and welcome to my channel in this channel you find all electronics and tech related stuff hope you have a great time watching my videos so in this video I am going to show you how to use an oscilloscope there are two types of oscilloscopes that is a CRO and a DSO CRO is a cathode ray oscilloscope DSO is a digital storage oscilloscope which is the latest one so there are some differences between these two let me just show you what are those in this video I will be using a dual channel DSO it has two channels channel one is in red and the channel two is in yellow here's the channel one menu and this one's for channel 2 this knob is for time or seconds per division it adjusts the horizontal speed frequency of the Oslo scope here on x-axis each division represents the time I am changing you can see it on the screen here is the volts per division setting of channel 1 you can see the units on the display each division on the screen shows the amplitude level of the signal now let's see the menu of the oscilloscope this is channel 1 menu here is the input coupling you can change it to DC AC or ground this is the channel 1 on/off button it also has a probe multiplication factor which can be set according to your probe I am using a 10x probe let me just set it to 10x there is an option to invert your signal also the channel 2 menu is similar to that of channel 1 you just have a look online [Music] this is also math menu which performs various operations on your signals like addition subtraction multiplication division this is also an FFT feature which is fast Fourier transform which is very similar to that of the spectrum analyzer this one's the trigger menu of the DSO you can see the details on the screen from here you can select the type source of the horizontal sweep oscillator there are some more options in the trigger menu just have a look [Music] we can measure and calculate the various parameters of the signal manually but in this latest oscilloscope this a measure button which automatically displays them on the screen so this is the measure menu which shows you RMS frequency peak to peak voltage of the given signal with this feature we can easily analyze the signals and it's time-saving here's the Oslo scope probe the black clip is the ground terminal and this one's the input probe I'll be using this extension of the clip for convenience it has a 10 x + 1 X which 1x can be used to measure very small signals with more accuracy but here I'm using it in telex mode this is the other end of the probe and this connector goes to the channel one of the oscilloscope liquid is connected here now you can see some changes on the screen it's because the Oslo scope has very high input impedance of several magoons and it's very sensitive as it catches the stray electric field so beginners may get confused because of this to reduce the sensitivity and impedance i'll show you simple method I have made this extra attachment to my probe using a 10 kilo ohm resistant to crocodile slips I am connecting this resistor parallel to my probe this reduces the input impedance and sensitivity of the DSO so that we can work easily without any confusion first let's check the DC voltage of this patreon the DSO I am connecting the probe to the battery now you can see that the display showing in negative direction this is because I have connected the battery in reverse polarity since its DC voltage which is a continuous signal it will be displayed as a straight line here the DSO is showing 9 volts let me just reverse the terminals now you can see it in positive direction [Music] let's check the AC voltage of this transformer I'll be using a 12 volts transformer let me connect it to the oscilloscope you can see the sine wave on the screen and it's showing 12 volts ac as the mains frequency is 50 Hertz it's displayed here on the screen you can change the seconds per division according to your convenience this is a function generator I'll be using it to show you various waveforms and signals on the DSO with this control we can change the frequency it generates various type of signals like DC voltage square wave sine wave and triangular wave the amplitude level can be changed using this knob let's connect it to the Oslo scope [Music] the sine-wave is displayed on the screen let me just adjust it so that we can see clearly now we can calculate the parameters of the signal either manually or using the measure function you can see that the frequency on the oscilloscope matches with that of the function generator and the voltage is displayed here I am connecting the second probe to the channel 2 of the DSO I am giving the same input to the second Channel you can see that both the channels are displaying identical waveforms as the same signal is fed to them we can even change the position of the signal using these controls you [Music] I am changing the frequency you can see the change on the screen I am applying different waveforms just have a look all the readings are shown here [Music] now I'm connecting the second channel probe to the de esos internal oscillator which is a square wave of five volts and one kilohertz frequency and is used as a reference signal as a source in trigger menu is set to channel 1 the prefers change it to channel 2 to make the second signal stable the oscilloscope is showing 5 volts and 1 kilohertz frequency which matches with the signal if required triggering can also be done using an external source there's also an auto set feature in this DSO if the signal is completely out of range or confused we can use this auto set feature which automatically chooses the best settings for the signal to be displayed this makes your work very easy so guys this was the basic explanation on how to use an oscilloscope if you liked the video hit the thumbs up button and subscribe to my channel for more awesome videos I'll catch you in my next video