Lab 2 - School of Nuclear Engineering Purdue University West Lafayette IN 47907-1290 NUCL 205 Experiment 2 Nuclear Electronics Part 1Use of

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
NUCL 205: Exp 2-Oscilloscopes 1/8 01/14/2008 School of Nuclear Engineering Purdue University West Lafayette, IN 47907-1290 NUCL 205 Experiment 2: Nuclear Electronics, Part 1—Use of Oscilloscopes 1 Objectives To learn the function and use of oscilloscopes for checking the pulse shapes into and out of signal processing modules. To start to become familiar with the typical pulse shapes used in nuclear electronics. 2 Introduction Almost all nuclear measurements involve the use of electronic equipment. When connecting various signal- processing modules, particular care must be exercised that the output of one module be compatible with the input of the next module. It is also important to know when a module is malfunctioning or not properly adjusted. Although most of the time tests can be devised to verify a system's operation, the fastest way to ensure the proper adjustment and operation is to observe the shapes of the electronic pulses going into and out of each module. The oscilloscope is used for this purpose. 2.1 Oscilloscope An oscilloscope is a device which permits one to examine the time dependence of electric signals, that is, the amplitude of the signal vs. time. The oscilloscope allows one to display a “picture” of the signal on a CRT screen. Although oscilloscopes come in many shapes and packages, they all have four common functions which are required for the operation of any oscilloscope, these are: (a) focus and intensity controls, (only on analog scopes, not on digital) (b) vertical display controls, (c) horizontal display controls, and (d) trigger controls. The first step in the operation of any oscilloscope is to locate these four groups of controls and familiarize yourself with their operation. 2.1.1 Focus and Intensity Controls (analog o-scopes) The focus and intensity control the focus and the brightness of the trace. These controls are very similar to the controls that are on any TV set or CRT terminal. The focus control should be set to give the narrowest trace (line or dot). The intensity control should be adjusted to produce a trace that can be seen under normal light conditions. Avoid excessive brightness because this will burn or deteriorate the phosphor on the tube face. Some instruments also have an astigmatism control which permits the focus to be varied across the whole face of the tube. 2.1.2 The Vertical Controls The vertical controls on the oscilloscope control consist of both a vertical position control to control the vertical position of the trace/signal on the screen and a gain/amplification
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
NUCL 205: Exp 2-Oscilloscopes 2/8 01/14/2008 control that determines the vertical size of the signal as it is displayed on the screen. The input signal may vary either in a positive or negative direction from the zero or baseline position. Many oscilloscopes will have provisions for two or more input signals. Each of the inputs will have their own set of controls for position and amplification. In addition, the oscilloscope will then also have a set of
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/11/2010 for the course MCMP 341 taught by Professor No during the Spring '10 term at Purdue University-West Lafayette.

Page1 / 8

Lab 2 - School of Nuclear Engineering Purdue University West Lafayette IN 47907-1290 NUCL 205 Experiment 2 Nuclear Electronics Part 1Use of

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online