Exp_1_fa09

Exp_1_fa09 - Physics 3330 Experiment #1 Fall 2009...

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Physics 3330 Experiment #1 Fall 2009 Electronic Instruments Purpose This experiment introduces the three basic electronic instruments you will use in the course: the oscilloscope , the function generator , and the digital multimeter . Spend enough time in the lab this week to become familiar with the instruments. There are no pre-lab homework problems for this first lab, and you do not have to write a report. In place of the report, there are homework problems on dc and ac circuit theory at the end of this chapter. Introduction Any time you develop a new circuit, repair an electronic instrument, or measure the performance of an electronic component or system, you will need to use one or more items of test equipment. Almost every task requires an oscilloscope , the basic instrument for visualizing the time dependence of electronic signals. A signal or function generator is used to produce periodic signals of the frequency, amplitude, and waveform needed for input to the device under test. The digital multimeter measures voltages, currents, resistance, and it can test silicon diodes and transistors. Everything you do in an electronics laboratory depends upon your familiarity with these instruments. The instructions for this experiment are designed help you start seeing patterns on the oscilloscope screen as soon as possible, and to familiarize you with the basic controls of each instrument. They do not cover all of the capabilities of the instruments. For greater detail, consult the manufacturer's manuals kept on the book shelf in the lab. Reading Read Chapter 1, Sections 1.01-1.12 of Horowitz and Hill for a review of basic circuit theory and some other important introductory topics: voltage dividers, resistors, voltage and current sources, the Thévenin equivalent circuit, types of signals, decibels, and capacitors. Also read the first three appendices: The Oscilloscope, Math Review, and The 5% Resistor Color Code. ALSO: Read the AGILENT 33120A FUNCTION GENERATOR MANUAL pp. 19-24 and the tutorial on pp. 33-40. This document is at the course web site. Homework Answer the questions on pages 1.9 & 1.10 of this lab writeup (at the end). Turn these in to your instructor at the start of your second lab period. Recall that the Mathcad that you used in PHYS1140 can do complex numbers. The only “trick” is that to get (1+i) you must type (1+1i) because i by itself is not -1. Do not put an * or a x between 1 and i. You can use the PHYS1140 computers for this course but you must still show your work. Experiment #1 1.1 Fall 2009
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Experiment TEKTRONIX 3014 OSCILLOSCOPE The Tektronix 3014 oscilloscope is similar to the generic 'scope described in H&H, but uses digital technology and menu systems more often than knobs, which provide many additional features. The 3014 has four independent vertical channels instead of just two, so that four separate signals can be displayed at once. We also have two separate horizontal sweeps (called A and B) which allow traces with two different sweep speeds to be displayed at the same time. (The main use for this is to zoom in and magnify a small part of a trace while still displaying the
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Exp_1_fa09 - Physics 3330 Experiment #1 Fall 2009...

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