search
person
Oscilloscope

2 Answers

Oscilloscope

image

image

•Oscilloscope fall in two main category one is analogue oscilloscope and second is digital storage oscilloscope.

•Oscilloscope develop with the cathode ray tube (CRT) technology.

•Cathode ray tube (CRT) have high frequency response.

•So lets look at the CRT first.

image

•CRT simply shows the electron beam on phosphor coated screen.

•CRT basically consist of electron gun, vertical and horizontal deflection system and acceleration section.

•So the oscilloscope circuit move the electron beam to the phosphor coated screen so the glow trace a path of the beam and it is visible for a short time.

•Oscilloscope are often use for rise time measurements.

•Oscilloscope is use for measuring frequency, width and period.

•Oscilloscope display amplitude of signal in function of time.

•Both analogue and digital oscilloscope have 2 to 8 channels.

•Analogue oscilloscope have no memory storage and digital oscilloscope have some memory storage.

•If we want to check voltage spike or to check time interval accuracy we use oscilloscope.

•In modern oscilloscope there is VLSI circuits.

•Modern (digital) oscilloscope are costlier than analogue oscilloscope.

thumb_up_alt 0 like thumb_down_alt 0 dislike

Oscilloscope

image

image

image

image

image

thumb_up_alt 0 like thumb_down_alt 0 dislike

Related questions

Description : What is digital storage oscilloscope (DSO)?

Answer : Digital storage oscilloscope have many advantages as compared to analogue oscilloscope. Digital storage oscilloscope uses analogue to digital converter and digital to analogue converter and also it ... oscilloscope is used for comparing waveforms and recording and it have many different uses.

Description :

Explain the basic operation of an oscilloscope with necessary diagram for each section in detail.

Description : Use Dual Trace Oscilloscope to Determine A.C Voltage and Current Response in Given R, L, C Circuit.

Answer : Practical Significance In the industry environment Electrical Engineering Diploma graduate are expected to handle cathode ray oscilloscope (CRO) to measure basic parameters like voltage, frequency, time ... components and emphasize a quantity, lagging or leading with respect to other quantity.

Description : Compare analog CRO with digital storage oscilloscope (DSO).

Answer : Analog CRO DSO 1 High bandwidth Less bandwidth due to aliasing effect 2 High  writing speed about 15 GHz Limited speed 3 No memory Has memory ... Less storage time. The digital oscilloscope is  capable of an infinite storage time, using its digital memory.

Description : The time base signal in Cathode Ray Oscilloscope (CRO) is  (1) A square wave signal (2) A sawtooth signal (3) A triangular wave signal (4) A sinusoidal signal

Answer : 2 Saw tooth 

Description : Two sinusoidal signals of the same frequency are displayed on a dual-trace oscilloscope. One complete cycle of each signal covers 6 cm of the horizontal scale and the starting point of the horizontal scale and the starting point of the two signals are separated by 0.5 cm. The phase difference between the two signals in degrees is  (a) 30 (b) 45 (c) 60 (d) 90

Answer : Two sinusoidal signals of the same frequency are displayed on a dual-trace oscilloscope. One complete cycle of each signal covers 6 cm of the horizontal scale and the starting point of the horizontal ... signals are separated by 0.5 cm. The phase difference between the two signals in degrees is 30

Description : The trace on an oscilloscope continually moves to the right of the screen when  (a) the sweep is triggered. (b) the sweep period is larger than the signal period. (c) the sweep period is smaller than the signal period. (d) there is no weep.

Answer : The trace on an oscilloscope continually moves to the right of the screen when the sweep period is smaller than the signal period. 

Description : In a dual trace oscilloscope, the display appears segmented when  (a) low frequency signals are observed in Alternate mode (b) low frequency signals are observed in Chop mode (c) high frequency signals are observed in Alternate mode (d) high frequency signals are observed in Chop mode

Answer : In a dual trace oscilloscope, the display appears segmented when high frequency signals are observed in Chop mode

Description : Draw block diagram of digital storage oscilloscope.

Answer : block diagram of digital storage oscilloscope.

Description : Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter

Answer : ANSWER: W -- AMMETER

Description : A piano tuner notices a standing Lissajous (pron: Liss-a-jew) curve on his oscilloscope. The tone being projected is: w) out of harmony x) sharp y) resonating z) flat

Answer : ANSWER: Y -- RESONATING

Description : If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's: w) frequency x) wavelength y) velocity z) amplitude

Answer : ANSWER: Z -- AMPLITUDE

Description : The waveform of a certain signal can be studied by (1) Spectrometer (2) Cathode ray oscilloscope (3) p – n junction diode (4) Sonometer

Answer : Sonometer

Description : How do I use a dual trace oscilloscope to determine AC voltage and current response in a given R, L, and C circuit?

Description : Describe with block diagram; the principle of operation of digital storage oscilloscope.

Answer : The block diagram of DSO is shown above. Sampling rate may be as high as 1,00,000 samples per sencod. For such high sampling rates, a fast conversion ADC is requried. Flash ADC ... particular signal in the memory then overwritting should be stopped.This obtained by using Hold and Save button.

Description : An oscilloscope measures (a) peak to peak value of voltage (b) d.c. value of voltage (c) r.m.s. value of voltage (d) average value of voltage 

Description :

The time/div and voltage/div axes of an oscilloscope have been erased. When a 1 kHz, 5V p-p square wave calibration pulse is connected to channel 1 ofthe scope the waveform observed on the screen is as shown in the upper trace of the figure. An unknown signal is connected to channel 2 (lower trace) ofthe scope. If the time/div and V/div on both channels are the same, the amplitude (pp) and period of the unknown signal are respectively.

image

Answer : The time/div and voltage/div axes of an oscilloscope have been erased. When a 1 kHz, 5V p-p square wave calibration pulse is connected to channel 1 ofthe scope the waveform observed on the screen is ... are the same, the amplitude (pp) and period of the unknown signal are respectively. 7.5 V, 2ms

Description : In a two -channel oscilloscope operating in x -y mode, two in -phase 50 Hz sinusoidal waveforms of equal amplitude are fed to the two channels. What will be the resultant pattern on the screen ? (a) An ellipse (b) A parabola (c) Straight line inclined at 45° with respect to x-axis (d) A circle

Answer : In a two -channel oscilloscope operating in x -y mode, two in -phase 50 Hz sinusoidal waveforms of equal amplitude are fed to the two channels. What will be the resultant pattern on the screen ? (a) An ellipse (b) A parabola (c) Straight line inclined at 45° with respect to x-axis (d) A circle

Description : A oscilloscope 4cmX4cm screen has its own sweep out, fed back to its input if x&y Sensitivities are same, the oscilloscope will display  A) triangular wave B) diagonal line C) sine wave D) Circle

Description :

A Lissajous pattern on an oscilloscope has 5 horizontal tangencies and 2 vertical tangencies. The frequency of the horizontal input is 1000 Hz. What is the frequency of the vertical input? 


(A) 400 Hz (B) 5000 Hz (C) 4000 Hz (D) 2500 Hz

Description :

Answer : An oscilloscope indicates Peak to peak value of voltage.

Description :

Answer :  In a free running oscilloscope, the horizontal deflection system is driven by a Ramp waveform

Description :

Answer : Any energy coming from electronic devices

Description : need of calibration and explain the procedure to calibrate the instrument.

Answer : Need of calibration: Every measuring device degrades over time due to normal wear and tear. These changes can be caused by various reasons such as electric or mechanical shock or a hazardous manufacturing ... different magnitude are used to calculate the resistance based on ohm's law.

Description : Compare Dual slope DVM and SAR type DVM.

Answer : Sr no Dual slope DVM SAR type DVM 1 It is highly accurate It is moderately accurate 2 Cost is high It is inexpensive 3 Two comparator is used One comparator is used ... resolution Good resolution 5 Slow speed High speed 6 Less Error More error

Description : block diagram of logic analyzer.

Answer : A logic analyzer can be triggered on a complicated sequence of digital events, then capture a large amount of digital data from the system under test (SUT).When logic analysers first came ... Once the data are captured, they can be displayed several ways, from the simple) to the complex 

Description : operation of DSO with block diagram.

Answer : The input is amplified and attenuated with input amplifiers. The output of the input signal amplifiers feeds an analog to digital converter (ADC). There are numbers of ADC available. But the selection of ADC ... view the display on the CRT, the data from memory is reconstructed in analog form.

Description : sketch time period measurement by CRO.

Answer : Horizontal sweep is turned ON and the display appealing on the screen is adjusted by varying different control knobs provided on the front panel of CRO, till the signal is suitably displayed ... Where m=Number of division in one complete cycle n=Setting of time base =Time/Division

Description : operation of ramp type DVM.

Answer : This is given to an input comparator which will compare two signals and generates the output. One input to the input comparator is from the input and another input is from the ramp. This input voltage and ... ground and output is given. This output will stop the flow of purchase from clock

Description : operation of half wave rectifier type AC Voltmeter.

Answer :  Half-wave Rectifier Voltmeter The d'Arsonval meter movement only responds to the average or dc value of the current through the moving coil. In order to measure alternating ... ) input voltage signal alternating signal needs to be rectified first by using diode rectifier to produce 

Description :  operation of whetstone bridge. 

Answer : A Wheatstone bridge is widely used to measure the electrical resistance. This circuit is built with two known resistors, one unknown resistor and one variable resistor connected in the form of bridge. ... using a Wheatstone Bridge the unknown electrical resistance value can easily measure.

Description : role of the series resistance connected in PMMC movement.

Answer : A PMMC Instrument can be used as voltmeter by just connecting a series resistance with the moving coil. This series resistance is called Voltmeter Multiplier. This combination of moving coil and ... current whose voltage is to be measured. Ideally the resistance of voltmeter should be infinite

Description : different types of errors occurs in measurement.

Answer : Generally errors are classified into three types: systematic errors, random errors and blunders. 1) Gross Errors 2) Random Errors 3) Systematic Errors Instrumental Errors Environmental ... to wrong observations or reading in the instruments particularly in case of energy meter reading. 

Description : tern null as it applies to bridge measurement.

Answer : Null measurements balance voltages so that there is no current flowing through the measuring device and, therefore, no alteration of the circuit being measured. Null measurements are generally more ... the use of standard voltmeters and ammeters, and they still have limits to their precision.

Description : application of CRO.

Answer : Applications of CRO: 1) Voltage measurement. 2) Current measurement. 3) Measurement of phase difference. 4) Measurement of phase. 5) Measurement of frequency. 6) Measurement of inductance. ... in various circuits. 17) For checking transistor. 18) It can measure short time interval.

Description : In a sample-and-hold circuit, the aperture time is (A) time required following a sample (B) time required for the switch to open (C) transition time interval between sample and hold (D) time from the hold command to the opening of the switch 

Description : How many non-overlapping channels are available in IEEE 802.11b

Answer : 3 non-overlapping channels are available in IEEE 802.11b

Description : Number of comparators required for an 8 bit flash ADC is: (1) 8 (2) 16 (3) 255 (4) 256

Answer : Number of comparators required for an 8 bit flash ADC is: 255

Description : In D/A converter, the resolution required is 50mv and the total maximum input is 10v. The number of bits required is   (A) 7 (B) 8 (C) 9 (D) 200

Answer : In D/A converter, the resolution required is 50mv and the total maximum input is 10v. The number of  bits required is 8 

Description : Choose the correct statement  (a) Digital multimeters are built using current measuring elements, while analog multimeters are built using voltage measuring units (b) Digital multimeters are built using voltage measuring units, while analog multimeters are built using current measuring units (c) Both digital and analog multimeters are built using voltage measuring units (d) Both digital and analog multimeters are built using current measuring units

Answer : Choose the correct statement  (a) Digital multimeters are built using current measuring elements, while analog multimeters are built using voltage measuring units (b) Digital multimeters are built ... measuring units (d) Both digital and analog multimeters are built using current measuring units

Description : An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument will produce a full scale deflection when the current passed through it is  (a) 10 mA (b) 20 mA (c) 50 mA (d) 100 μA

Answer : An analog voltmeter has a sensitivity of 10kΩ/volt. The galvanometer used in constructing the instrument will produce a full scale deflection when the current passed through it is 100 μA

Description : An optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument  (a) Optical spectrum Analyzer (OSA) (b) Optical Time Domain Reflectometer (OTDR) (c) Optical Power Meter (OPM) (d) Laser Diffractometer (LD)

Answer : An optical fiber cable laid underground has developed a discontinuity at a distance d from the source end. The fault can be located using the instrument Optical Time Domain Reflectometer (OTDR) 

Description : Transient signals can be observed using  (a) storage oscilloscope (b) sampling oscilloscope (c) wave analyzer (d) spectrum analyzer

Answer : Transient signals can be observed using storage oscilloscope

Description : To distinguish between signals having very close values, we need an instrument with  (a) high accuracy (b) high resolution (c) high sensitivity (d) high linearity

Answer : To distinguish between signals having very close values, we need an instrument with high resolution

Description : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB?  (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω

Answer : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB?  (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω

Description : ESD stands for

Answer : ESD stands for Electro static Discharge

Description : In a particular circuit connection, AWG 18 wire is selected over AWG 22. The reason is that it is having

Answer : In a particular circuit connection, AWG 18 wire is selected over AWG 22. The reason is that it is having Higher current carrying capacity

Description : Very small displacements are effectively measured using

Answer : Very small displacements are effectively measured using LVDT

Description : Y –axis in a CRO normally represents

Answer : Volt 

Description : What are the types of error?

Answer : Human error or gross error, systematic error, applicational error and random error are the types of error.

← Prev Question Next Question →
editAsk a Question
...