1. The document discusses a group discussion report comparing digital and analog oscilloscopes. It provides introductions to oscilloscopes, comparisons of analog and digital oscilloscopes, and advantages and disadvantages of each. 2. The main difference is that analog oscilloscopes display waveforms in real-time, while digital oscilloscopes convert waveforms to digital numbers and store them for later analysis. 3. Digital oscilloscopes have advantages like analyzing stored data and high frequencies, while being more expensive, whereas analog oscilloscopes are cheaper but can only analyze signals in real-time.

1. Department of Electrical Engineering, FEST, Indus University, Karachi
Faculty of Engineering, Sciences & Technology
INDUS UNIVERSITY
GROUP DISCUSSION REPORT ON
DIGITAL V/S ANALOGUE OSCILLOSCOPE
SUBJECT: Instrumentation and measurements
TEACHER: Sir Sajid Ahmed
GROUP MEMBERS:
1. Ikram Ullah Khan (2685-2017)
2. Ikram Arshad (1897-2017)
3. Farhan Ali (1924-2016)
4. Deedar Ali (2876-2017)

2. Department of Electrical Engineering, FEST, Indus University, Karachi
Ikram Arshad (1897-2017)
INTRODUCTION:
➢ An oscilloscope, recently called an oscillograph, and casually known as a degree or
o-scope, CRO (for cathode-beam oscilloscope), or DSO (for the more present day
computerized capacity oscilloscope), is a sort of electronic test instrument that
graphically shows shifting signal voltages, for the most part as a two-dimensional plot
of at least one flag as a component of time. Different signals, (for example, sound or
vibration) can be changed over to voltages and showed.
➢ Oscilloscopes show the difference in an electrical sign after some time, with voltage
andtime as the Y-andX-tomahawks, individually,on an adjustedscale. The waveform
would then be able to be broke down for properties, for example, abundancy,
recurrence, rise time, time interim, contortion, and others. Present day advanced
instruments may compute and show these properties straightforwardly. Initially,
computation of thesequalities requiredphysicallyestimatingthewaveform againstthe
scales incorporated with the screen of the instrument.
➢ The oscilloscope can be balanced with the goal that tedious sign can be seen as a
consistent shape on the screen

3. Department of Electrical Engineering, FEST, Indus University, Karachi
Farhan Ali (1924-2016)
COMPARISON:
➢ The fundamental workingof both the simple andadvancedoscilloscopesare fairly the
equivalent. The inside segments utilized in both of the gadgets are equivalent to well.
Indeed, even the presentation utilized in both the gadgets perhaps the equivalent. In
this way, on the off chance that you at any point thought of an update from a simple
oscilloscope to an advanced one, you could without much of a stretch adapt ready.
➢ The primary utilization of both the oscilloscopes is to quantifytimesensitivefluctuating
sign. Time, being one of the parameters for investigating the waveform, the sign you
get at a specific timespan will differ. This variety is estimated utilizing the oscilloscope
and the outcome is to discover abnormalities and irregularities and commotions,
alongside the qualities in it.
➢ The distinction between a simple oscilloscopeand a computerized oscilloscopeis that
in a simple gadget the waveform is appeared in the first structure, while an advanced
oscilloscopechangesoverthe first simple waveform by examiningitandchangesover
them into advanced numbers and afterward stores them in advanced configuration.
This is finished by an Analog to Digital converter.

4. Department of Electrical Engineering, FEST, Indus University, Karachi
Ikram Ullah (2685-2017)
Advantages of oscilloscope(Analogue):
➢ It is cheaper compare to digital counterpart.
➢ It delivers reasonable performance which are accurate for many lab exercises.
➢ It does not require ADC, µP (Microprocessor) and acquisition memory for
measurement purpose.
Disadvantages of oscilloscope(Analogue):
➢ As there is no storage memory available, it can only analyze signal in real time.
➢ It cannot analyze high frequency sharp rise time transients.
➢ It does not offer all the capabilities as supported by digital oscilloscope type.
➢ It requires some amount of training to use it.

5. Department of Electrical Engineering, FEST, Indus University, Karachi
Deedar Ali (2876-2017)
Advantages of oscilloscope(Digital):
➢ It can analyze signal in real time as well as can analyze large samples of acquired
data with the help of storage memory.
➢ It can analyze high frequency transients due to advanced DSP algorithms available
Disadvantages of oscilloscope(Digital):
➢ It requires ADC, µP and acquisition memory for measurement purpose.
➢ It is costly and cost depends on features supported in different available models viz.
digital storage oscilloscope, digital phosphor oscilloscope and digital sampling
oscilloscope.

6. Department of Electrical Engineering, FEST, Indus University, Karachi
QUESTIONS:
Q1: What is an oscilloscope?
Answer: An oscilloscopeis a piece of equipmentusedto measureelectronic signals,and
is found in many scientific laboratories. (Ikram Arshad 1897-2017)
Q2: What is a USB oscilloscope?
Answer: A USB oscilloscope is a device, which uses a USB port to transfer the data to a
computer. The data is then processed by application software and shown on a graphical
user interface. (Deedar Ali 2876-2017)
Q3: What is frequency measured in?
Answer: Frequency is the rate of change of a periodical signal with respect to time. Its
unit of measurement is Hertz. The distance between two consecutive peaks or valleys is
called the period of the wave. The period is measured in time units. A period of 1 second
means that wave repeats itself every second. The frequency of the wave is the inverse
value of its period and it is measured in Hertz or Hz. 1 Hz (Hertz) = 1/Second. For a 1
second period, the frequency of the wave is 1 Hz. On the other hand if the period of a
wave is 10 ns, its frequency is 100 MHz. (Ikram Ullah 2685-2017)
Q4: What are the essential components of CRT?
Answer: The essential componentsof a CRT are electron gun,focusingandaccelerating
anodes, horizontal and vertical deflection plates, and evacuated glass envelope with
phosphorescent screen. (Farhan Ali 1924-2016)

7. Department of Electrical Engineering, FEST, Indus University, Karachi
CONCLUSION:
We can tell that analogue and digital oscilloscope are very deeply different. Through this
paper we present the introduction, comparison and application Analogue and digital
oscilloscope also the application of oscilloscope in engineering fields. In the case of
Analogue and digital oscilloscope these are few but one is highly significant; while
oscilloscope is commonly used for waveform electrical signal. It is stretching credulity to
suppose that anything like a direct abstractionist approach to oscilloscope.