TABLE OF CONTENTS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
COMMON FUNCTION GENERATOR TERMS . . . . . .2
BASIC FUNCTION GENERATOR CONTROLS . . . . .4
FUNCTION GENERATOR BASICS . . . . . . . . . . . . . .6
Input Circuits . . . . . . . . . . . . . . . . . . . . . . . . . .6
Basic Generator Loop . . . . . . . . . . . . . . . . . . . .6
Function Selection . . . . . . . . . . . . . . . . . . . . . .7
Output Stages . . . . . . . . . . . . . . . . . . . . . . . . . .7
Additional Circuitry . . . . . . . . . . . . . . . . . . . . . .7
Sweep Circuit . . . . . . . . . . . . . . . . . . . . . . . . . .7
Gated Burst Circuit . . . . . . . . . . . . . . . . . . . . . .8
AM Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
TTL Output . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
FM Modulation . . . . . . . . . . . . . . . . . . . . . . . . .8
APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Troubleshooting by Signal Tracing . . . . . . . . . . .9
Troubleshooting by Signal Substitution . . . . . . .9
Using a Function Generator as a Bias and
Signal Source . . . . . . . . . . . . . . . . . . . . . . . . . .9
Amplifier Overload Characteristics . . . . . . . . . .10
Frequency Response Measurements,
Linear Display . . . . . . . . . . . . . . . . . . . . . .10
Frequency Response Measurements,
Linear/Log Display . . . . . . . . . . . . . . . . . . .11
Frequency Response Using a Digital Storage
Oscilloscope . . . . . . . . . . . . . . . . . . . . . . .13
Amplifier Performance Evaluation Using
Square Waves . . . . . . . . . . . . . . . . . . . . . .13
Testing Speakers and Impedance Networks . .14
Notes on Amplitude Modulation . . . . . . . . . . . .14
AM Receiver Alignment . . . . . . . . . . . . . . . . . .15
FM Communications Receiver Alignment . . . .16
Testing Digital Logic Circuits . . . . . . . . . . . . . .16
Preset Frequency Selection . . . . . . . . . . . . . .16
Digital Frequency Selection . . . . . . . . . . . . . . .17
Testing Tone Burst Decoders . . . . . . . . . . . . . .17
Testing Modulation Limiters and
Compression Amplifiers . . . . . . . . . . . . . . .18
All rights reserved. No part of this guidebook shall be reproduced, stored in a retrieval system,
or transmitted by any means, electronic, mechanical, photocopying, recording or otherwise,
without written permission from B&K Precision Corporation. While every precaution has been
taken in the preparation of this guidebook, B&K Precision Corp. assumes no responsibility for
errors or omissions. Neither is any liability assumed for damages resulting from the use of the
information contained herein.
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