The handwritten numbers on the bottom may be wrong. Please complete the graph an
ID: 2990384 • Letter: T
Question
The handwritten numbers on the bottom may be wrong. Please complete the graph and the questions.
Oscilloscope and Capacitor 1. Turn O-scope on (push in the power button on top) 2. Connect a 10X oscilloprobe to the CHI BNC connector (Such oscilloprobe attenuate the input signal by 10 times, and you need to make sure the probe is set to 10X on oscillioscope). 3. Press the CHI menu button Make sure the Coupling is set to DC, so both AC and DC signals appear. Also be sure Probe is set to 10X 4. Clip the probe to the top PROBE terminal (ground clip goes to bottom terminal) This terminal has a square wave output, with Vpk pk = 5 volts @ 1kHz. Push the MEASURE button. Push the AUTOSET button. You should see something like the figure below. What is the period(in seconds) for one cycle of the square wave shown on this figure 1.00ms From this, what frequency do you calculate? 1 Khz.Explanation / Answer
1) Period of a signal is the time taken by the signal to repeat itself.
I can be expressed mathematically as x(t)=x(t+nT) where n=0,1,2,... and T is the time period of the signal
From the oscilloscope diagram, it takes two time units to complete on cycle.
Hence time period of the signal =2div*500us/div =1000us=1ms=0.001s
2) frequency of a signal is the number of cycles it complete in one second
we have one cycle completes in 1ms.
i.e., it completes 1000cycles in 1 second
The unit is cycles/s or Hz
Thus frequency is 1000Hz or 1KHz
Explanation of other objects in graph:
1) The first one on the right of figure shows coupling: It can be DC, AC or GND. In DC coupling, the DC value of the signal is also shown by the oscilloscope. in AC coupling, the only the AC component is shown(ie filtered the dc component and the graph will be symmetric about the horizontal axis). In GND mode it will not display any output rather signal is grounded: DC coupling required
2) the second one is to set the bandwidth limit. Every oscilloscope has a band limitation and here it is 60MHz. It can be turned on in order to limit the bandwidth to 60MHz. Its also possible to limit to lower bandwidths in certain oscilloscope: OFF
3)The probe input can be set to 10x or 1x. If it is set 10x then the signal will be scaled down by 10 times(1 div =200mv if input is 2v). This can used if we ave provided 10x magnification to signal. when 1x it just plots the signal in the same scale: 10x
4) The invert option provide us freedom of inverting the signal. That is we can plot -Vx if we are inputting Vx at the probe. OFF implies the signal is not inverted: OFF
5)Volts/ div= Coarse
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