EE3114 manual_lab 1

# EE3114 manual_lab 1 - EE 3114 Experiment 1 Equipment...

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EE3114 Fundamentals of Electronics I Lab 1 Rev 1 12/11/08 © Polytechnic Institute of NYU 1 EE 3114 Experiment 1 Equipment Orientation I. Introduction The purpose of this experiment is to acquaint the student with the characteristics and operation of the major equipment that will be used in this course. These include the oscilloscope, function generator, dc power supply, and digital multimeter. The properties and limitations of these instruments will be recorded in the students records to facilitate future interpretation and reduction of data. The serial number of each piece of equipment tested and calibrated will be recorded in your laboratory notebook so that those data necessary for future experiments will be available. Record your connection diagrams in detail so that an experiment can be repeated at some future date, if necessary. II. The Oscilloscope It is assumed that all students are familiar with the basic principles of operation of the oscilloscope from previous laboratory courses. The purpose of this exercise is to become familiar with the particular oscilloscope used in this course. A. Acquaint yourself with the front panel controls. In particular identify the vertical channel amplifier section, horizontal sweep controls, cathode ray tube (CRT) display controls, and the horizontal amplifier controls. B. Measure the input resistance (Rs) and input capacitance (Cs) of your oscilloscope using the transient test illustrated in Fig. 1. Note: Do not use coaxial cable between the 1M resistor and the input BNC connector of the oscilloscope as RG 59/U cable has a capacitance of 25 pF/ft.

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EE3114 Fundamentals of Electronics I Lab 1 Rev 1 12/11/08 © Polytechnic Institute of NYU 2 Figure 1. Test circuit used to measure input resistance and input capacitance of the oscilloscope From the final value of the transient, you will be able to determine Rs and from the measurement of the time constant τ p = (Rs || R) Cs you will be able to determine Cs. Use the horizontal sweep magnifier to obtain an accurate measurement of the rise time. Record the results in your laboratory notebook. Do not use the XI0 compensated attenuator probe. C. Display a Lissajous pattern on your oscilloscope by applying a 100Hz, 6V peak-to-peak, sinusoidal voltage simultaneously to the vertical and horizontal inputs. Use the 1V/cm dc coupled VERTICAL and HORIZONTAL sensitivity settings. If the vertical and horizontal channel amplifiers have the same phase-shift characteristics and sensitivity, a straight line with 45° slope from the vertical should be observed (why?). Vary the frequency of the applied signal over the range from 10 Hz to 100 kHz. Record the frequency range over which the phase shift of the horizontal and vertical channel amplifiers do not
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EE3114 manual_lab 1 - EE 3114 Experiment 1 Equipment...

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